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FAQ
247-i-am-having-problems-running-openvpn-with-the-windows-xp-firewall-enabled-whats-wrong
249-upgraded-the-openvpn-daemon-on-one-side-of-the-connection-to-v20-and-now-it-cant-connect
251-openvpn-server-successfully-connected-a-client-to-it-but-when-i-try-to-connect-a-second-client-the
253-tls-error-tls-key-negotiation-failed-to-occur-within-60-seconds-check-your-network-connectivity
255-qconnection-initiated-with-xxxxq-but-i-cannot-ping-the-server-through-the-vpn
257-can-an-openvpn-server-be-set-up-on-a-machine-with-a-single-nic
259-tap-win32-adapter-is-not-coming-up-initialization-sequence-completed-with-errors
261-when-i-try-configure-on-red-hat-9-linux-or-higher-it-complains-about-openssl-headers-not-found
263-openvpn-can-ping-both-peers-but-i-cant-reach-any-of-the-other-machines-on-the-remote-subnet
265-how-do-i-enable-ip-forwarding
267-i-am-having-trouble-getting-openvpn-1x-to-talk-with-openvpn-20
269-tue-oct-26-143448-2004-36880-write-udpv4--no-buffer-space-available-code105
271-i-can-ping-through-the-tunnel-but-any-real-work-causes-it-to-lock-up-is-this-an-mtu-problem
273-qifconfig-poolq-option-use-a-30-subnet-4-private-ip-addresses-per-client-when-used-in-tun-mode
275-why-cant-i-run-openvpn-on-windows-from-a-non-admin-user-account
277-i-uninstalled-openvpn-on-windows-2000-and-now-it-appears-that-winsock-is-broken-how-to-fix
279-are-there-any-issues-related-to-pushing-dhcp-options-to-windows-clients
281-what-to-do-if-the-installation-of-the-tap-win32-driver-fails
283-can-i-run-multiple-openvpn-tunnels-on-a-single-machine
285-everything-seems-to-be-configured-correctly-but-i-cant-ping-across-the-tunnel
287-is-ipv6-support-plannedin-the-works
289-how-can-i-build-a-binary-rpm-package-for-my-specific-linux-platform
291-on-slackware-i-get-the-error-cipher-algorithm-bf-cbc-not-found-openssl
293-what-is-the-principle-behind-openvpn-tunnels
295-are-there-any-known-security-vulnerabilities-with-openvpn
297-is-it-important-to-openvpn-security-practices-to-build-an-intermediate-certificate-authoritykey
299-can-openvpn-handle-the-situation-where-both-ends-of-the-connection-are-dynamic
301-does-openvpn-support-certificate-revocation-lists-crls
303-how-stable-is-the-openvpn-protocol-ie-can-old-versions-of-openvpn-talk-to-new-versions
305-what-is-the-difference-between-a-tun-device-and-a-tap-device
307-what-is-bridging
309-what-is-the-difference-between-bridging-and-routing
311-what-are-the-fundamental-differences-between-bridging-and-routing-in-terms-of-configuration
313-how-can-i-connect-windows-xp-to-a-linux-based-samba-server-using-routing-rather-than-bridging
315-i-get-the-error-cannot-ioctl-tunsetiff-tun0-file-descriptor-in-bad-state-errno77
317-qmulti-bad-source-address-from-client--packet-droppedq-or-qget-inst-by-virt-failedq
319-how-do-i-make-the-windows-network-adapter-my-default-adapter-again
321-remap-local-addresses-to-connect-two-networks-with-an-overlap-in-the-private-address-range
323-i-want-to-set-up-an-ethernet-bridge-on-the-1921681024-subnet-existing-dhcp
325-openvpn-as-a--forking-tcp-server-which-can-service-multiple-clients-over-a-single-tcp-port
327-changed-hex-bytes-in-the-static-key-the-key-still-connects-to-a-remote-peer-using-the-original-key
328-route-and-route-ipv6-in-ccd-files
329-problems-with-tls
330-CanIUseAWebBrowserAsAnOpenvpnClient
331-DoesOpenvpnSupportIpsecOrPptp
332-CanOpenvpnTunnelOverATcpConnection
333-WhyChooseTLSAsOpenvpnsUnderlyingAuthenticationAndKeyNegotiationProtocol
334-WhyMyOpenVPNTunnelDoesNot
GSoC2026_ideas
GSoC_howtopropose
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CVE-2023-46850
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CVE-2023-7235
CVE-2024-1305
CVE-2024-13454
CVE-2024-24974
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CVE-2024-5198
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VulnerabilitiesFixedInOpenSSL1_0_1i
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VulnerabilitiesFixedInOpenVPN243
heartbleed
An Otter Wiki
Page Index
Toggle page headings
A
Archived/
ACKSystemReview
Current ACK/NACK code review system
Scope
Evolution
Pros
Limitations
Cons
Raw data
Generic statistics
ACKs by person
Effects of the ACK system on patches
Big patchsets
Conclusions
BuildingTapWindows
Setting up the Windows build computer
Building TAP-windows
BuildingUsingGenericBuildsystem
Building natively on *NIX
Cross-compiling on *NIX ("generic" subdir)
Creating a NSIS installer ("windows-nsis" subdir)
Code-signing
Making the release builds of OpenVPN
External links
DynamicDNS
Requirements
Installation
Configuration
Installing DDNS TSIG Keys
Sharing a Zone with DHCP
ISC DHCPD Server Integration
To Do
IPv6
DUID and dhcp-client-identifier
More Documentation and Testing
GettingOpenvpnBuild
Fetching openvpn-build using Git
Getting openvpn-build releases
HLKTesting
Getting source code for tap-windows6
HLK test environment overview
Installing HLK software
Preparing HLK clients
Setting up OpenVPN for HLK tests
Preparing HLK studio/controller
Select the device to test
Set product type
Loading compatibility playlists
Adding machines to pool
Configuring and running the mandatory HLK tests
Multi-machine tests
NDISTest 6.5 - 2 machine - Linkcheck
NDISTest 6.0 - 2 Machine - 2c_Priority
NDISTest 6.5 - 2 Machine - AddressChange
NDISTest 6.5 - 2 Machine - E2EPerf
NDISTest 6.0 - 1 machine - 1c_FaultHandling
NDISTest 6.0 - 1 machine - 1c_NdisRequestCov
NDISTest 6.0 - 1 machine - 1c_Registry
NDISTest 6.0 - 2 machine - 2c_Mini6Stress
TDI filters and LSPs are not allowed
Static Tools Logo Test
Various known issues
Failures to Copy downlevel NDISTest binaries
HLK clients can't be activated
Packet transmission too slow
Packets reordering
Address Change test failures
HLK client version mismatches
Controller misuses support machine
Driver parameters
Test-signing issues
HLK logging
Debugging
Addendum
Default browser on HLK controller
Tap-windows6 as virtual network device
Note on reboots
Firewall rules for HLK server and clients
External links
IOSinline
Nonprivileged
Solution for Windows XP
New and working solution for Windows 7 (and above)
2 scripts that help us
Script 1 create_main_task_only_runonce.cmd
Script 2 create_usertask.cmd
Install OpenVPN-GUI
Prepare and fix Registry Keys
Copy script files to target
Setup the main task
Change OpenVPN-GUI shortcut
Test it!
First logon
Main scheduled task will execute
Security related information
Future logons
Main scheduled task will execute
User task will execute
Summary
OpenvpnMSIInstaller
Installer targets
Notes
Optimizing Performance on Gigabit Networks
Network Setup
Understanding the Flow of Packets
Standard Setup
Tweaked Setup
Explanation
txqueuelen
Using OpenSSL 1.0.0 with AES-NI patch
Explanation
Using OpenSSL 1.0.0 with AES-NI capable hardware
For reference: using no encryption
10 Gigabit networks
PerformanceTesting
Goals
Prequisites
Test cases
Throughput tests
Connection tests
Test results
Test setup details for m1.small servers
Test setup details for m1.large servers
MP-2 results
OpenVPN 2.2.1/m1.large/UDP/IPv4/OpenSSL/20 clients (MP-2)
MP-3 results
OpenVPN 2.2.1/m1.large/UDP/IPv4/OpenSSL/50 clients (MP-3) ===
MP-4 results
Test environments
General considerations
Amazon EC2
Local (LAN)
Configuring test server(s)
Configuring test clients
Tools
Deploying clients
Generating network traffic
Collecting data
Notes
Head/tail effect
PrivilegeSeparation
OpenVPN use-cases
Standalone workstations
Enterprise workstations
Practical privilege separation models (enterprise use-case)
GUI/service ==
alonbl notes
Interactive service
COM+
Alonbl notes
External links
RoadMap
Introduction
Similar projects
Current issues and potential fixes
Monolithic architecture
Threading
Event system
OpenVPN 3.0: Development issues
Organic vs. planned development
Start from scratch vs. incremental approach
Generic network stack vs. focus on VPN functionality
OpenVPN 3.0: Design and implementation
SecurityOverview
OpenVPN Protocol
StaticKeyMiniHowto
Static Key advantages
Static Key disadvantages
Simple Example
Server configuration file
Client configuration file
Firewall configuration
Testing the VPN
Expanding on the Simple Example
Use compression on the VPN link
Make the link more resistent to connection failures
Run OpenVPN as a daemon (Linux/BSD/Solaris/MacOSX only) ==
Allow client to reach entire server subnet
TapWindowsLicenseChange
TracWikiReplacements
Requirements
General observations
Open source wikis that seem most suitable
Seemingly good candidates that got rejected after a closer look
Other possibly suitable open source wikis
Unsuitable alternatives that were reviewed
Open source wikis with wrong focus
Non-open source wikis
Open source wikis that are outdated
UsingSmartcards
External resources
C
Changelogs
ChangesInOpenVPN1x
ChangesInOpenVPN20
ChangesInOpenVPN21
ChangesInOpenVPN22
ChangesInOpenVPN23
OpenVPN 2.3.17
OpenVPN 2.3.16
OpenVPN 2.3.15
OpenVPN 2.3.14
OpenVPN 2.3.13
OpenVPN 2.3.12
OpenVPN 2.3.11
OpenVPN 2.3.10
OpenVPN 2.3.9
OpenVPN 2.3.8
OpenVPN 2.3.7
OpenVPN 2.3.6
OpenVPN 2.3.5
OpenVPN 2.3.4
OpenVPN 2.3.3
OpenVPN 2.3.2
OpenVPN 2.3.1
OpenVPN 2.3.0
OpenVPN 2.3_rc2
OpenVPN 2.3_rc1
OpenVPN 2.3_beta1
OpenVPN 2.3-alpha3
OpenVPN 2.3-alpha2
OpenVPN 2.3-alpha1
ChangesInOpenVPN24
OpenVPN 2.4.10
OpenVPN 2.4.9
OpenVPN 2.4.8
OpenVPN 2.4.7
OpenVPN 2.4.6
OpenVPN 2.4.5
OpenVPN 2.4.4
OpenVPN 2.4.3
OpenVPN 2.4.2
OpenVPN 2.4.1
OpenVPN 2.4.0
OpenVPN 2.4_rc2
OpenVPN 2.4_rc1
OpenVPN 2.4_beta2
OpenVPN 2.4_beta1
OpenVPN 2.4_alpha2
ChangesInOpenVPN25
Changes in 2.5.10
Changes in 2.5.9
Changes in 2.5.8
Changes in 2.5.7
Changes in 2.5.6
Changes in 2.5.5
Changes in 2.5.4
Changes in 2.5.3
Changes in 2.5.2
Changes in 2.5.1
Changes in 2.5.0
Changes in 2.5_rc3
Changes in 2.5_rc2
Changes in 2.5_rc1
Changes in 2.5_beta4
Changes in 2.5_beta3
Changes in 2.5_beta2
Changes in 2.5_beta1
ChangesInOpenVPN26
Changes in 2.6.13
Changes in 2.6.12
Changes in 2.6.11
Changes in 2.6.10
Changes in 2.6.9
Changes in 2.6.8
Changes in 2.6.7
Changes in 2.6.6
Changes in 2.6.5
Changes in 2.6.4
Changes in 2.6.3
Changes in 2.6.2
Changes in 2.6.1
Changes in 2.6.0
Changes in 2.6_rc2
Changes in 2.6_rc1
Changes in 2.6_beta2
Changes in 2.6_beta1
Community Forum
Registering and participating
Account or post deletion
D
DataChannelOffload
Read more about DCO
CapaNegotiation
Features
Supported features by platform
How To Contribute
Linux
Branches
Sending patches
LinuxUAPI
Netlink
API
Peer handling
OVPN_CMD_PEER_NEW
OVPN_CMD_PEER_SET
OVPN_CMD_PEER_GET
OVPN_CMD_PEER_DEL
Key handling
OVPN_CMD_KEY_NEW
OVPN_CMD_KEY_SWAP
OVPN_CMD_KEY_GET
OVPN_CMD_KEY_DEL
Events (from kernel to userspace)
OVPN_CMD_PEER_DEL_NTF
OVPN_CMD_KEY_SWAP_NTF
NonLinuxPlatforms
Windows
FreeBSD
Routing
Intro
Routing on Linux
Userspace
UsingDCO
WhatChanges
Before DCO
Introducing DCO
Development
CodeStyle
Introduction
Line wrapping
Some additional secure coding style rules
All branches must use braces
Cases in a switch statement should break or explicitly fall through
Use ASSERT() to verify assumptions, but never use assert()
Portability concerns
Printing time_t and suseconds_t values
Windows specific
Automatic formatting
Contributing
Volunteer tasks
Writing code
Participating in the ACK system
Testing and reporting bugs
Translating the GUI
Making feature requests
Packaging
Helping other users
Writing documentation
Helping other users
Spreading the word
Moderating OpenVPN forums
Contributing to other OpenVPN-related projects
DeveloperDocumentation
Developer communication channels
Development processes
Daily development
Adding placeholder bug reports
Making a release
Feature deprecation
Community patches and the acceptance process of these patches
Example of patch submission and the review process
Handling security issues
Patch submission via Gerrit
Patch quality
Formatting
Conventions
Code contributions
Shell scripts
Code repositories
Core Developer Infrastructure
Community VPN
Buildbot
HTTP Proxy
Socks5 Proxy
HTTP Proxy with NTLM authentication
Practical issues
Using Git
Bisecting commits to detect introduction of a bug
Applying patches from emails
Sending GitHub pull requests to the mailing list
Sending patches with git-send-email
Poor-man's Symdiff
GerritBestPractices
Account Creation
Documentation
Identity Settings
Search / Menu settings
Submission to the mailing list
Gerrit notification mails
OpenVPNMSICA
OpenVPN_QA
Overview of current tools and processes
Static testing
Peer review
Automated static testing
Dynamic testing
Dedicated black-box tests
Performance tests
Testing in real environments
Continuous integration
Unit testing
Windows testing
Additional testing tools
Openvpn2ReleaseProcess
External systems involved
Build tools
openvpn-build
Pre-release checklist
Notifying external entities
OpenVPN Inc website team
OpenVPN Inc marketing
Access Server team
Package maintainers
Release process
Sync repositories
Prepare dependencies
Package
Smoketest packages
Update online documentation
Publish packages
Release announcements
After release
Misc
PackageMaintainers
ReleaseOfOpenVPN
Cycle length
Feature Freeze
ServerSideTestingImprovementPlan
OpenVPN server implementations
Server-side testing in July 2024
The challenges
What is being tested?
What is not being tested?
Known issues
Internal OpenVPN testing at OpenVPN Inc
Next steps
t_server_null.sh
SettingUpBuildslave
OpenVPN projects being built by Buildbot
List of existing workers
Creating a VM for a worker
Ensure that manual building works correctly
Setting up the VPN connection
Testing OpenVPN connectivity
Setting up a worker
Simplistic setup
Running buildbot as non-root user
Configuring a worker for connectivity tests
Accessing buildmaster webui
Using the local Git repo on buildmaster
Troubleshooting
Build failures
Workers running out of disk or inodes
Worker not connecting to buildmaster
StatusOfOpenvpn24
Schedule
Deadline: Debian 9 freeze
Features/Fixes to Include
Must Have
Minor, but "We Should Try to Make It Happen"
Work Needed
(Major) Items Already Done
StatusOfOpenvpn25
Schedule
Features/Fixes to Include
Must Have
Postponed Items (former "nice to have" items for 2.5)
Work Needed
Items Already Done
Missing Pieces from MSI
Dropping tap-windows6 NSI Changes?
StatusOfOpenvpn26
Schedule
Features/Fixes to Include
Must Have
Must Have - Completed/Done
Nice to Have / Wild Ideas
Unlikely to Happen, Keeping the List
StatusOfOpenvpn27
Schedule
Features/fixes to include
completed/done
should have
nice to have / wild ideas
StatusOfOpenvpn28
Introduction
Schedule
Features/fixes to include
completed/done
should have
nice to have / wild ideas
TesterDocumentation
Getting OpenVPN snapshots
Fetching sources using git
Source for OpenVPN for Android
Source for OpenVPN Connect (android/IOS)
Building
Building on MacOS X with homebrew
TAP-driver debugging
OpenVPN Debugging
Enable core dump
Reporting bugs
Downloads
OpenVPN 2.6.19 -- Released 4 February 2026
Full Release History
Verify signature
Verifying file signatures
Old signatures for old releases
F
FAQ
247-i-am-having-problems-running-openvpn-with-the-windows-xp-firewall-enabled-whats-wrong
249-upgraded-the-openvpn-daemon-on-one-side-of-the-connection-to-v20-and-now-it-cant-connect
251-openvpn-server-successfully-connected-a-client-to-it-but-when-i-try-to-connect-a-second-client-the
253-tls-error-tls-key-negotiation-failed-to-occur-within-60-seconds-check-your-network-connectivity
255-qconnection-initiated-with-xxxxq-but-i-cannot-ping-the-server-through-the-vpn
257-can-an-openvpn-server-be-set-up-on-a-machine-with-a-single-nic
259-tap-win32-adapter-is-not-coming-up-initialization-sequence-completed-with-errors
261-when-i-try-configure-on-red-hat-9-linux-or-higher-it-complains-about-openssl-headers-not-found
263-openvpn-can-ping-both-peers-but-i-cant-reach-any-of-the-other-machines-on-the-remote-subnet
265-how-do-i-enable-ip-forwarding
267-i-am-having-trouble-getting-openvpn-1x-to-talk-with-openvpn-20
269-tue-oct-26-143448-2004-36880-write-udpv4--no-buffer-space-available-code105
271-i-can-ping-through-the-tunnel-but-any-real-work-causes-it-to-lock-up-is-this-an-mtu-problem
273-qifconfig-poolq-option-use-a-30-subnet-4-private-ip-addresses-per-client-when-used-in-tun-mode
275-why-cant-i-run-openvpn-on-windows-from-a-non-admin-user-account
277-i-uninstalled-openvpn-on-windows-2000-and-now-it-appears-that-winsock-is-broken-how-to-fix
279-are-there-any-issues-related-to-pushing-dhcp-options-to-windows-clients
281-what-to-do-if-the-installation-of-the-tap-win32-driver-fails
283-can-i-run-multiple-openvpn-tunnels-on-a-single-machine
285-everything-seems-to-be-configured-correctly-but-i-cant-ping-across-the-tunnel
287-is-ipv6-support-plannedin-the-works
289-how-can-i-build-a-binary-rpm-package-for-my-specific-linux-platform
291-on-slackware-i-get-the-error-cipher-algorithm-bf-cbc-not-found-openssl
293-what-is-the-principle-behind-openvpn-tunnels
295-are-there-any-known-security-vulnerabilities-with-openvpn
297-is-it-important-to-openvpn-security-practices-to-build-an-intermediate-certificate-authoritykey
299-can-openvpn-handle-the-situation-where-both-ends-of-the-connection-are-dynamic
301-does-openvpn-support-certificate-revocation-lists-crls
303-how-stable-is-the-openvpn-protocol-ie-can-old-versions-of-openvpn-talk-to-new-versions
305-what-is-the-difference-between-a-tun-device-and-a-tap-device
307-what-is-bridging
309-what-is-the-difference-between-bridging-and-routing
Bridging Setup
Bridge Server on Linux
Bridge Server on Windows XP
Bridge Client configuration
Ethernet Bridging Notes
Notes -- Ethernet Bridging on Linux, Setup Scripts
sample-scripts/bridge-start
sample-scripts/bridge-stop
311-what-are-the-fundamental-differences-between-bridging-and-routing-in-terms-of-configuration
313-how-can-i-connect-windows-xp-to-a-linux-based-samba-server-using-routing-rather-than-bridging
315-i-get-the-error-cannot-ioctl-tunsetiff-tun0-file-descriptor-in-bad-state-errno77
317-qmulti-bad-source-address-from-client--packet-droppedq-or-qget-inst-by-virt-failedq
319-how-do-i-make-the-windows-network-adapter-my-default-adapter-again
321-remap-local-addresses-to-connect-two-networks-with-an-overlap-in-the-private-address-range
323-i-want-to-set-up-an-ethernet-bridge-on-the-1921681024-subnet-existing-dhcp
325-openvpn-as-a--forking-tcp-server-which-can-service-multiple-clients-over-a-single-tcp-port
327-changed-hex-bytes-in-the-static-key-the-key-still-connects-to-a-remote-peer-using-the-original-key
328-route-and-route-ipv6-in-ccd-files
329-problems-with-tls
330-CanIUseAWebBrowserAsAnOpenvpnClient
331-DoesOpenvpnSupportIpsecOrPptp
332-CanOpenvpnTunnelOverATcpConnection
333-WhyChooseTLSAsOpenvpnsUnderlyingAuthenticationAndKeyNegotiationProtocol
334-WhyMyOpenVPNTunnelDoesNot
G
GSoC2026_ideas
GSoC_howtopropose
H
HOWTO
Introduction
Intended Audience
Additional Documentation
Installing OpenVPN
Linux Notes
Windows Notes
Mac OS X Notes
Other OSes
Determining whether to use a routed or bridged VPN
Numbering private subnets
Setting up your own Certificate Authority (CA) and generating certificates and keys for an OpenVPN server and multiple clients
Overview
Generate the master Certificate Authority (CA) certificate & key
Generate certificate & key for server
Generate certificates & keys for 3 clients
Generate Diffie Hellman parameters
Key Files
Creating configuration files for server and clients
Getting the sample config files
Editing the server configuration file
Editing the client configuration files
Starting up the VPN and testing for initial connectivity
Starting the server
Starting the client
Troubleshooting
Configuring OpenVPN to run automatically on system startup
Linux
Windows
Controlling a running OpenVPN process
Running on Linux/BSD/Unix
Running on Windows as a GUI
Running in a Windows command prompt window
Running as a Windows Service
Modifying a live server configuration
Status File
Using the management interface
Expanding the scope of the VPN to include additional machines on either the client or server subnet
Including multiple machines on the server side when using a routed VPN (dev tun)
Including multiple machines on the server side when using a bridged VPN (dev tap)
Including multiple machines on the client side when using a routed VPN (dev tun)
Including multiple machines on the client side when using a bridged VPN (dev tap)
Pushing DHCP options to clients
Configuring client-specific rules and access policies
Using alternative authentication methods
Using Script Plugins
Using Shared Object or DLL Plugins
Using username/password authentication as the only form of client authentication
How to add dual-factor authentication to an OpenVPN configuration using client-side smart cards
About dual-factor authentication
What is PKCS#11?
Finding PKCS#11 provider library
How to configure cryptographic token
How to modify an OpenVPN configuration to make use of cryptographic tokens
Determine the correct object
Using OpenVPN with PKCS#11
PKCS#11 implementation considerations
OpenSC PKCS#11 provider
Difference between PKCS#11 and Microsoft Cryptographic API (CryptoAPI)
Routing all client traffic (including web-traffic) through the VPN
Overview
Implementation
Caveats
Running an OpenVPN server on a dynamic IP address
Connecting to an OpenVPN server via an HTTP proxy
Connecting to a Samba share over OpenVPN
Implementing a load-balancing/failover configuration
Client
Server
Hardening OpenVPN Security
tls-auth
proto udp
user/group (non-Windows only)
Unprivileged mode (Linux only)
chroot (non-Windows only)
Larger RSA keys
Larger symmetric keys
Keep the root key (ca.key) on a standalone machine without a network connection
Revoking Certificates
Example
CRL Notes
Important Note on possible "Man-in-the-Middle" attack if clients do not verify the certificate of the server they are connecting to
Sample OpenVPN 2.0 configuration files
Home
Release Information
Getting and Using OpenVPN
OpenVPN Project
Overview
How to participate
Development status
Meeting notes
M
MTU and Fragments
Why fragments: OpenVPN over UDP
tcpdump examples
small packet in the tunnel ("ping -s 64 fd00:abcd:194:2::1")
large packet in the tunnel ("ping -s 1452")
huge packet in the tunnel ("ping -s 3000")
why is this a problem?
how to avoid fragments?
--compress
--fragment
--tun-mtu
--mssfix
OpenVPN over TCP
Summary
Meetings
2010/
2010-04-22
Other
2010-04-29
Patch Queue
New / awaiting ACK
In progress - awaiting dazo
In progress / awaiting further feedback
Awaiting testing before ACK
Other
2010-05-06
Open questions
2010-05-13
Possible bugs/issues
Other
2010-05-20
Beaker test framework
Continuous integration server
Developer bounties
2010-05-27
Background
Which Tree to Base Releases On?
Option 1: Basing Releases on James' "Stable" Tree
Option 2: Basing Releases on David's "Testing" Tree
How to Verify Stability of the "Testing" Code (for Moving to "Stable" or Prior to a Release?)
Other
Bridging Issues
2010-06-03
Next release (2.2)
Other
2010-06-10
Patches
Next release (2.2)
2010-06-17
Other
2010-07-01
Misc
2010-07-08
New features
Bugs
Misc
2010-07-15
Development issues
Community services
2010-07-22
Bugs
Other
2010-07-29
2010-08-05
Remaining Trac Tickets
Lack of Windows Client Binaries and Signed TUN/TAP Drivers
Hosting of OpenVPN 2.2 Beta Releases
Announcing the 2.2 Beta Release
2010-08-12
Bugs
2010-08-19
Issues with Release of OpenVPN 2.2-beta2
Relationship and Purpose of 2.1.x and 2.2 Series
Communication Improvements Needed
2010-08-26
Packaging
2010-09-02
Misc
Translations
Openvpn.net "Client software -> Downloads" page confusion
2010-09-16
Other
2010-09-23
2010-10-14
Other
2010-10-21
2010-11-18
OpenVPN 2.2-beta4
Patch queue:
Possible bugs?
2010-11-25
2010-12-02
2.3 release
Other
2010-12-09
2010-12-16
2011/
2011-01-06
Buildsystem-related
Build warnings
Patches
Other
Releases
PREfast error messages
2011-01-13
Other
2011-02-10
2.2-rc release
Documentation
Other
2011-02-17
Automated tests
2011-03-24
Bugs
Patch queue for 2.2-RC2
OpenVPN 2.2-RC2 release
Other
2011-04-07
2.2 release
2011-04-14
Bugs
Patch queue
New build computer
2011-04-28
OpenVPN 2.2.0
Code repositories
Improving automated testing (buildbot)
2011-05-19
2011-06-09
OpenVPN 2.3 Snapshot Builds for Windows
Placing Small Ads into the OpenVPN Windows Installer?
Misc
2011-06-16
Testing
Misc
2011-06-30
MinGW buildsystem
OpenSSL 0.9.6 support
2011-07-07
Patches
2011-07-14
Sprint topics
2011-07-21
Sprint topics
2011-07-26
2011-07-28
Sprint topics
2011-08-03
Web Forum
Sprint topics
2011-08-11
OpenVPN 2.2.2
OpenVPN 2.3
Bugs
Sprint topics
2011-08-18
Development
Next Releases
SVN Merger
2011-08-25
PolarSSL patches
2011-09-01
PolarSSL patches
2011-09-08
Patches without an ACK:
PolarSSL patches
2011-09-14
Bugs
2011-09-15
Bugs
2011-09-29
Bugs
Patches
Other
Patch queue
2011-10-06
2011-10-20
Other
2011-11-24
OpenVPN 2.3 Alpha Release
Buildbot Status
Windows Building
FOSDEM 2012
2011-12-08
What's missing?
Who will take care of each missing part?
When will each missing part be ready?
Release date?
OpenVPN 2.3 Alpha Release Status
What's missing?
Who will take care of each missing part?
When will each missing part be ready?
Release date?
2012/
2012-01-19
2012-03-15
Documentation
Patches
Tap-windows patchset
Easy-rsa patchset
OpenVPN-GUI build rewrite patchset
Build revolution patchset
Build system
2012-04-26
Patches
Git Repo Layout
Suggested Changes to Development Processes
Subsystems vs. Features
Git Repos: GitHub <-> SF.net
ACK -> Maintenance Responsibility?
OpenVPN 2.4
Buildbot Testing
2012-05-31
2012-06-21
2.3-alpha2 release
Missing patches
2.3-beta1 release
2012-11-29
Agenda
2013/
2013-04-18
Handling Security Vulnerabilities in the Future
OpenVPN 3.0
OpenVPN 2.4
Patches
Additional Considerations
2013-04-25
Gert Döring
Arne Schwabe
2013-05-09
Gert Döring
Arne Schwabe
2013-05-23
Gert Döring
Arne Schwabe
Heikki Hannikainen
2013-06-20
James' Set of Patches (Based on 2.3)
Arne Schwabe
Heikki Hannikainen
David Sommerseth
Kenny Root
Development Discussion
2013-07-11
Ticket review
2013-08-08
The usual stuff
Patch review
Ticket review
2013-08-22
1. Issues with supplying username/password/response via file/stdin/management interface
2. openvpn-build issues
Review of Old Topics
The Usual Stuff
Patch Review
Ticket Review
2013-11-16
Contributor License Agreement (CLA)
Permissive Licensing
Minimizing the Scope of the CLA
Public Release Date for OpenVPN 3.x Codebase
Future of OpenVPN 2.x and 3.x
2013-ProductNamespaces
2014/
2014-01-09
The usual stuff
Patch review
Ticket review
2014-04-24
TLS versioning
2.3.4
The usual stuff
Patch review
Ticket review
2014-10-23
Changes in the 2.3 branch
2014-11-24
Topics
2014-12-22
Patch review
2014-12-29
Patch review
2015/
2015-01-12
Patch review
2015-01-19
Patch review
2015-02-02
Patch review
2015-03-30
Topics
OpenVPN 2.4
OpenVPN 2.3.7 release
2015-04-13
Topics
2015-04-27
Topics
2015-05-04
Topics
Documentation
Ticket Handling in Trac
OpenVPN 2.4
2015-05-18
Topics
2015-06-01
Topics
2015-06-15
Topics
2015-06-29
Topics
2015-07-13
Topics
2015-07-27
Topics
2015-08-10
Topics
Postponed topics
2015-08-24
Topics
Postponed topics
2015-09-07
2015-09-21
Topics
Windows building
T-Shirts!
Patch review
2015-10-05
Topics
2015-10-26
Topics
2015-11-09
Topics
2015-11-23
Topics
2015-12-14
Topics
2015-12-28
Topics
2016/
2016-01-11
Topics
2016-02-01
Topics
Interactive Service
The Windows service
Update --block-outside-dns to work on Windows Vista
2016-05-09
Topics
2016-05-30
Topics
2016-06-13
Topics
OpenVPN 2.4 patches (these are the priority)
Other patches ("if time permits")
2016-08-15
Topics
2016-08-22
Topics
2016-10-10
Topics
2016-11-07
Topics
QA overview
2016-11-14
Topics
2016-11-23
Topics
2016-11-30
Topics
2016-12-07
Topics
2016-12-14
Topics
2016-12-21
Topics
1. OpenVPN 2.4 - next steps?
2. Decommissioning openvpn-testing.git (proposal from dazo)
3. Copyright updates
2017/
2017-01-04
Topics
2017-02-22
Topics
2017-03-15
Topics
2017-09-12
Topics
Still waiting for review
2017-09-20
Topics
Still Waiting for Review
2017-09-27
Topics
2017-10-04
Topics
2017-10-11
Topics
2017-10-18
Topics
2017-10-25
Topics
2017-11-01
Topics
1. Test branches on github, targeting buildslaves
2. Revisit our support policy for "oldstable"
2017-12-06
Topics
2017-12-13
Topics
2017-12-20
Topics
2018/
2018-01-03
Topics
Topics on hold
2018-01-10
Topics
Topics on hold
2018-01-17
Topics
Topics on hold
ecdsa-sig
2018-01-24
Topics
Topics on hold
2018-01-31
Topics
Topics on hold
2018-02-21
Topics
Topics on hold
2018-03-07
Topics
Topics on hold
2018-03-14
Topics
Topics on hold
2018-03-21
Topics
Topics on hold
2018-04-04
Topics
Topics on hold
2018-04-18
Topics
Topics on hold
2018-05-02
Topics
Topics on hold
2018-05-23
Topics
Topics on hold
2018-05-30
Topics
Topics on hold
2018-06-06
Topics
Topics on hold
2018-06-13
Topics
Topics on hold
2018-07-04
Topics
Topics on hold
2018-09-19
Topics
Topics on hold
2018-09-26
Topics
Topics on hold
2018-10-03
Topics
Topics on hold
2018-10-10
Topics
Topics on hold
2018-10-24
Topics
Topics on hold
Notes
2018-11-14
Topics
Topics on hold
2018-11-28
Topics
Topics on hold
2018-12-05
Topics
Topics on hold
2018-12-12
Topics
Topics on hold
2018-12-19
Topics
Topics on hold
2019/
2019-02-13
Topics
Topics on hold
2019-03-12
Topics
Topics on hold
2019-03-20
Topics
Topics on hold
2019-03-27
Topics
Topics on hold
2019-04-03
Topics
Topics on hold
2019-04-11
Topics
Topics on hold
2019-04-17
Topics
Topics on hold
2019-04-25
Topics
Topics on hold
2019-05-01
Topics
Topics on hold
2019-05-09
Topics
Topics on hold
2019-05-15
Topics
Topics on hold
2019-05-23
Topics
Topics on hold
2019-05-29
Topics
Topics on hold
2019-06-06
Topics
Topics on hold
2019-06-12
Topics
Topics on hold
2019-06-20
Topics
Topics on hold
2019-06-26
Topics
Topics on hold
2019-07-04
Topics
Topics on hold
2019-07-10
Topics
Topics on hold
2019-07-18
Topics
Topics on hold
2019-07-24
Topics
Topics on hold
2019-08-07
Topics
Topics on hold
2019-08-15
Topics
Topics on hold
2019-08-21
Topics
Topics on hold
2019-08-29
Topics
Topics on hold
2019-09-04
Topics
Topics on hold
2019-09-12
Topics
Topics on hold
2019-09-18
Topics
Topics on hold
2019-09-26
Topics
Topics on hold
2019-10-02
Topics
Topics on hold
2019-10-10
Topics
Topics on hold
2019-10-16
Topics
Topics on hold
2019-10-24
Topics
Topics on hold
2019-10-30
Topics
Topics on hold
2019-11-21
Topics
Topics on hold
2019-11-27
Topics
Topics on hold
2019-12-05
Topics
Topics on hold
2019-12-11
Topics
Topics on hold
2019-12-19
Topics
Topics on hold
2020/
2020-01-06
2020-01-08
Topics
Topics on hold
2020-01-16
Topics
Topics on hold
2020-01-22
Topics
Topics on hold
2020-01-30
Topics
Topics on hold
2020-02-05
Topics
Topics on hold
2020-02-13
Topics
Topics on hold
2020-02-19
Topics
Topics on hold
2020-02-27
Topics
Topics on hold
2020-03-04
Topics
Topics on hold
2020-03-12
Topics
Topics on hold
2020-03-18
Topics
Topics on hold
2020-03-26
Topics
Topics on hold
2020-04-01
Topics
Topics on hold
2020-04-09
Topics
Topics on hold
2020-04-15
Topics
Topics on hold
2020-04-23
Topics
Topics on hold
2020-04-29
Topics
Topics on hold
2020-05-07
Topics
Topics on hold
2020-05-13
Topics
Topics on hold
2020-05-21
Topics
Topics on hold
2020-05-27
Topics
Topics on hold
2020-06-04
Topics
Topics on hold
2020-06-10
Topics
Topics on hold
2020-06-18
Topics
Topics on hold
2020-06-24
Topics
Topics on hold
2020-07-02
Topics
Topics on hold
2020-07-08
Topics
Topics on hold
2020-07-16
Topics
Topics on hold
2020-07-22
Topics
Topics on hold
2020-07-30
Topics
Topics on hold
2020-08-13
Topics
Topics on hold
2020-08-19
Topics
Topics on hold
2020-08-27
Topics
Topics on hold
2020-09-02
Topics
Topics on hold
2020-09-10
Topics
Topics on hold
2020-09-16
Topics
Topics on hold
2020-09-24
Topics
Topics on hold
2020-09-30
Topics
Topics on hold
2020-10-08
Topics
Topics on hold
2020-10-14
Topics
Topics on hold
2020-10-22
Topics
Topics on hold
2020-10-28
Topics
Topics on hold
2020-11-05
Topics
Topics on hold
2020-11-11
Topics
Topics on hold
2020-11-19
Topics
Topics on hold
2020-11-25
Topics
Topics on hold
2020-12-03
Topics
Topics on hold
2020-12-09
Topics
Topics on hold
2020-12-17
Topics
Topics on hold
2021/
2021-01-06
Topics
Topics on hold
2021-01-20
Topics
Topics on hold
2021-01-27
Topics
Topics on hold
2021-02-03
Topics
Topics on hold
2021-02-10
Topics
Topics on hold
2021-02-17
Topics
Topics on hold
2021-02-24
Topics
Topics on hold
2021-03-03
Topics
Topics on hold
2021-03-10
Topics
Topics on Hold
2021-03-24
Topics
Topics on hold
2021-03-31
Topics
2021-04-07
Topics
2021-04-14
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. --key and --chroot (with and without --persist-key)
3. Option to set http-proxy on Android
4. Lev: dco-win Driver in Windows installer
5. --cipher in 2.6
2021-04-21
Topics
2021-04-28
Topics
2021-05-05
Topics
2021-05-12
Topics
2021-05-19
Topics
2021-05-26
Topics
2021-06-02
Topics
2021-06-09
Topics
2021-06-16
Topics
2021-06-23
Topics
2021-06-30
Topics
2021-07-07
Topics
2021-07-14
Topics
2021-07-21
Topics
2021-07-28
Topics
2021-08-04
Topics
2021-08-11
Topics
2021-08-18
Topics
2021-08-25
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. Adding "Client" board to forums
3. Moving OpenVPN 2.4 support from fully supported to old stable.
4. IPv6 to community?
2021-09-01
Topics
2021-09-08
Topics
2021-09-15
Topics
2021-09-22
Topics
2021-09-29
Topics
2021-10-13
Topics
2021-10-20
Topics
External questions
2021-10-27
Topics
2021-11-10
Topics
2021-11-17
Topics
2021-11-24
Topics
2021-12-01
Topics
2021-12-08
Topics
2021-12-15
Topics
2021-12-22
Topics
2022/
2022-01-05
Topics
2022-01-12
Topics
2022-01-19
Topics
2022-01-26
Topics
2022-02-02
Topics
2022-02-09
Topics
2022-02-16
Topics
2022-02-23
Topics
2022-03-02
Topics
2022-03-09
Topics
2022-03-16
Topics
2022-03-23
Topics
Sync up on OpenVPN 2.5 and 2.6
Open follow-up questions on the frame rewrite
IPv6 to community?
Buildbot status, next steps
2022-03-30
Topics
2022-04-06
Topics
2022-04-13
Topics
2022-04-20
Topics
2022-04-27
Topics
1. Uncrustify
2. Sync up on OpenVPN 2.5 and 2.6
3. IPv6 to community?
4. Buildbot status, next steps
2022-05-04
Topics
1. Uncrustify
2. Sync up on OpenVPN 2.5 and 2.6
3. IPv6 to community?
4. Buildbot status, next steps
2022-05-11
Topics
2022-05-18
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. IPv6 to community?
3. Buildbot status, next steps
2022-05-25
Topics
2022-06-01
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. Snapshot Building & Publishing
3. P2P and --explicit-exit-notify
4. DNS Bit in IV_PROTO
5. DCO
6. IPv6 to Community
7. Buildbot Status and Next Steps
2022-06-08
Topics
2022-06-15
Topics
2022-06-22
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. Migrating to the new Patchwork instance
3. What to do with Trac?
4. IPv6 to community?
2022-06-29
Topics
2022-07-06
Topics
1. Sync up on OpenVPN 2.5 and 2.6
2. Hackathon
3. Drop --mktun / --rmtun support?
4. Migrating to the new Patchwork instance
5. What to do with Trac?
6. IPv6 to community?
2022-07-13
Topics
2022-07-20
Topics
2022-07-27
Topics
2022-08-03
Topics
2022-08-10
Topics
2022-08-17
Topics
2022-08-24
Topics
2022-08-31
Topics
2022-09-07
Topics
2022-09-14
Topics
2022-09-21
Topics
2022-09-28
Topics
2022-10-05
Topics
2022-10-12
Topics
2022-10-19
Topics
2022-10-26
Topics
2022-11-09
Topics
2022-11-23
Topics
2022-11-30
Topics
2022-12-07
Topics
How do we tag issues received on Github in our commit messages?
We will no doubt get bug reports about OpenVPN Connect software on GitHub issues. They do not belong there. How to deal with them?
Collect and discuss feedback on 2.6_beta1 release.
Should we do a 2.6_beta1 I602 windows release?
2.6_beta2 release date
Patchset that makes pkcs11 code even worse but will make users happy (becm)
License amendment for OpenVPN2 to accommodate mbedtls.
The reference manual for OpenVPN 2.6 will be posted on the main website this week.
OpenVPN2 build environment and improving it.
Management interface documentation on the main website will be updated with info from doc/management-notes.txt
Automated windows testing status. (lev)
What is this page https://community.openvpn.net/openvpn/wiki/CodeRepositories, can we delete it?
Peer-to-peer DCO handling status. (ordex, plaisthos)
Initial handshake rate limiting status (cron2, plaisthos)
NM integration / CAP_NET_ADMIN status. (dazo)
Build failure with private-install openssl 3 & DCO ticket #1469. (cron2)
SRV support, testers, and OpenBSD decision needed. (cron2)
Management interface improvement patches. (selva)
As discussed in Hackathon, we want to do a PoC with using Gerrit for code review.
Forums machine on community infrastructure is only non-Linux system.
Forums issues, permissions, layout.
novaflash needs some input on https://www-dev.openvpn.in/community-resources/openvpn-quickstart/
IPv6 to community.
2022-12-14
Topics
novaflash temporarily unavailable due to personal situation
2.6_beta2 release date
Status of OpenVPN 2.6 beta2 plans
2.6 MSVC toolchain, update to VS 2022? Windows Server 2022?
openvpn-build/generic and openvpn-build/windows-nsis: unmaintained. Should those be removed?
pkcs11-helper dynamic loader flags: yes/no(/cancel), add patch to openvpn/contrib to get support/exposure in 2.6(.0/beta2)?
OpenVPN2 build environment and improving it
License amendment for OpenVPN2 to accommodate mbedtls
Management interface documentation on main website will be updated with info from doc/management-notes.txt
https://www-dev.openvpn.in/community-resources/openvpn-quickstart/ will be updated from /doc/man-sections/example-fingerprint.rst information.
As discussed in Hackathon we want to do a PoC with using Gerrit for code review
Forums machine on community infrastructure is only non-Linux system
Forums issues, permissions, layout
IPv6 to community
2022-12-21
Topics
Current Topics
Topics on Standby
2022-12-28
Topics
Current topics
Topics on standby
2023/
2023-01-11
Topics
Current topics
OpenVPN 2.6.0 stable release open issues
Topics on standby
2023-01-18
Topics
Current topics
OpenVPN 2.6.0 stable release open issues
Topics on standby
2023-01-25
Topics
Current topics
Topics on standby
2023-02-01
Topics
Current topics
Topics on standby
2023-02-08
Topics
Current Topics
Planning New Release of OpenVPN 2.6
Press Release of 2.6
Build I005 of 2.6.0 Due to OpenSSL 3 Update?
Website Release Process Woes
Review DCO-for-Linux Release Status
License Amendment for OpenVPN2
Status of PoC Using Gerrit for Code Review
Feedback on 2.6 Release
Topics on Standby
Forums Machine on Community Infrastructure
Windows Traybar Logos
Updating Supported Versions
OpenVPN 2.6 Performance Results
Management Interface Documentation Update
Quickstart Guide Update on Community Website
IPv6 to Community
2023-02-15
Topics
Current Topics
Topics on Standby
2023-02-22
Topics
Current topics
Planning to have a new release of OpenVPN 2.6 around March 8th
2.6 release - any new feedback, anything vital?
New --dns directive - when to publish that. Can it go in 2.6.1?
License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
Hackathon blog post on OpenVPN website is done
Press release of 2.6
Review DCO-for-Linux release status
Status of PoC using Gerrit for code review
Website release process woes
Topics on standby
Can we have someone at OpenVPN create nicer Windows traybar logos (#1276)?
Forums machine on community infrastructure is only non-Linux system.
Have to remember to update SupportedVersions to put 2.4 out of support at around the end of March
OpenVPN 2.6 performance results
Management interface documentation on the main website will be updated with info from doc/management-notes.txt
OpenVPN Quickstart will be updated from /doc/man-sections/example-fingerprint.rst information.
IPv6 to community
2023-03-01
Topics
Current topics
Topics on standby
2023-03-08
Topics
Current Topics
Topics on Standby
2023-03-15
Topics
Current topics
Topics on standby
2023-03-22
Topics
Current Topics
Topics on Standby
2023-03-29
Topics
Current topics
Release planning for 2.6.3 - tentatively April 12
When going back to normal operating mode?
Status of PoC using Gerrit for code review
Security assessment of OpenVPN2 codebase
IPv6 to community
Topics on standby
License amendment for OpenVPN2 to solve OpenSSL/mbedTLS licensing issues
Can we have someone at OpenVPN create nicer Windows traybar logos (#1276)?
Website release process woes
SBOM topic
2.7 plans, if any?
Forums machine on community infrastructure is only non-Linux system
Have to remember to update SupportedVersions to put 2.4 out of support at around end of March
OpenVPN 2.6 performance results
Management interface documentation on main website will be updated with info from doc/management-notes.txt
OpenVPN Quickstart will be updated from /doc/man-sections/example-fingerprint.rst information
2023-04-12
Topics
Current Topics
Topics on Standby
2023-04-19
Topics
Current Topics
OpenVPN 2.6.3
When Going Back to Normal Operating Mode?
Status of PoC Using Gerrit for Code Review
Security Assessment of OpenVPN2 Codebase
IPv6 to Community
Topics on Standby
License Amendment for OpenVPN2 to Solve OpenSSL/MbedTLS Licensing Issues
Security@openvpn.net Mailing List
Can We Have Someone at OpenVPN Create Nicer Windows Traybar Logos (Issue #1276)?
Website Release Process Woes
SBOM Topic
2.7 Plans, if Any?
Forums Machine on Community Infrastructure is Only Non-Linux System
OpenVPN 2.6 Performance Results
Management Interface Documentation on Main Website Will Be Updated
OpenVPN Quickstart Will Be Updated
2023-04-26
Topics
Current Topics
Topics on Standby
2023-05-03
Topics
Current topics
Topics on standby
2023-05-10
Topics
Current topics
Topics on standby
2023-05-17
Topics
Current Topics
Topics on Standby
2023-05-24
Topics
Current Topics
Topics on Standby
2023-05-31
Topics
Current topics
Topics on standby
2023-06-07
Topics
Current Topics
2.6.5 Release Plans
Hackathon Arrangements
2.7 Plans, If Any?
Status of PoC Using Gerrit for Code Review
Security Assessment of OpenVPN2 Codebase
License Amendment for OpenVPN2 to Solve openssl/mbedtls Licensing Issues
Topics on Standby
security@openvpn.net Mailing List
Website Release Process Woes
Another Key Signing Topic
Can We Have Someone at OpenVPN Create Nicer Windows Traybar Logos (#1276)?
SBOM Topic
Forums Machine on Community Infrastructure Is Only Non-Linux System.
OpenVPN 2.6 Performance Results
Management Interface Documentation on Main Website Will Be Updated
OpenVPN Quickstart Will Be Updated
2023-06-14
Topics
Current topics
Topics on standby
2023-06-21
Topics
Current Topics
Topics on Standby
2023-06-28
Topics
Current topics
Topics on standby
2023-07-05
Topics
Current topics
Topics on standby
2023-07-12
Topics
Current topics
Topics on standby
2023-07-19
Topics
Current Topics
Topics on Standby
2023-07-26
Topics
Current topics
Topics on standby
2023-08-02
Topics
Current Topics
Topics on Standby
2023-08-09
Topics
Current topics
Topics on standby
2023-08-16
Topics
Current topics
Topics on standby
2023-08-23
Topics
Current topics
Topics on standby
2023-08-30
Topics
Current topics
OpenVPN release process topics
Tunnelcrack publication
Security assessment review
Hackathon arrangements
License amendment for OpenVPN2
Handling coverity scans/results
Static-key mini how-to is outdated
Website release process woes
Topics on standby
2023-09-06
Topics
Current topics
OpenVPN Release Process Topics
Tunnelcrack Publication
Security Assessment Review
Hackathon Arrangements
License Amendment for OpenVPN2
Handling Coverity Scans/Results
Static-Key Mini How-To is Outdated
Website Release Process Woes
Topics on Standby
OpenVPN 2.6 Performance Results
New Taskbar Icons
Security Mailing List
Another Key Signing Topic
SBOM Topic
Forums Machine on Community Infrastructure
Management Interface Documentation
OpenVPN Quickstart Update
Security Assessment of OpenVPN2 Codebase
2023-09-13
Topics
Current topics
Topics on standby
2023-09-20
Topics
Current topics
Topics on standby
2023-09-27
Topics
Current topics
Topics on standby
2023-10-11
Topics
Current topics
OpenVPN 2.6.7 release
Hackathon 2023 meeting summary
Hackathon 2024 planning
Weekly meeting summaries
Security assessment of OpenVPN2 codebase
Tunnelcrack published now Tunnelcrack
License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
Static-key mini how-to is outdated.
Website release process woes
Topics on standby
OpenVPN release process topics
OpenVPN 2.6 performance results
What's going on with new taskbar icons?
security@openvpn.net mailing list
Another key signing topic
SBOM topic
Forums machine on community infrastructure is only non-Linux system
Management interface documentation on main website will be updated with info from doc/management-notes.txt
OpenVPN Quickstart will be updated from /doc/man-sections/example-fingerprint.rst information.
2023-10-18
Topics
Current topics
2023-10-25
Topics
Current Topics
2023-11-01
Topics
Current Topics
Updated: OpenVPN 2.6.7 Release
Updated: Publish Security Assessment of OpenVPN2 Codebase on Main Website
Updated: Tunnelcrack Published Now
License Amendment for OpenVPN2 to Solve OpenSSL/mbedTLS Licensing Issues
OpenVPN Community Meetup 2024
Website Release Process Woes
Static-Key Mini How-To is Outdated
OpenVPN Release Process Topics
OpenVPN 2.6 Performance Results
What's Going on with New Taskbar Icons?
security@openvpn.net Mailing List
Another Key Signing Topic
SBOM Topic
Forums Machine on Community Infrastructure is Only Non-Linux System
Management Interface Documentation on Main Website Will Be Updated with Info from doc/management-notes.txt
2023-11-08
Topics
Current Topics
Updated: OpenVPN 2.6.7 Release
Updated: Publish Security Assessment of OpenVPN2 Codebase on Main Website
Tunnelcrack Published Now
License Amendment for OpenVPN2 to Solve OpenSSL/MBedTLS Licensing Issues
OpenVPN Community Meetup 2024
Website Release Process Woes
Static-Key Mini How-to is Outdated
OpenVPN Release Process Topics
OpenVPN 2.6 Performance Results
What's Going on with New Taskbar Icons?
Security@openvpn.net Mailing List
Another Key Signing Topic
SBOM Topic
Forums Machine on Community Infrastructure is Only Non-Linux System
Management Interface Documentation on Main Website Will Be Updated with Info from doc/management-notes.txt
2023-11-15
Topics
Current topics
Updated: OpenVPN 2.6.7 release
New: OpenVPN 2.6.8 release
New: donations for OpenVPN community
Updated: Publish security assessment of OpenVPN2 codebase on main website.
Tunnelcrack progress TunnelCrack community wiki article
License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
OpenVPN community meetup 2024
Website release process woes
Static-key mini how-to is outdated
OpenVPN release process topics
OpenVPN 2.6 performance results
What's going on with new taskbar icons?
security@openvpn.net mailing list
Another key signing topic
SBOM topic
Forums machine on community infrastructure is only non-Linux system.
Management interface documentation on main website will be updated with info from doc/management-notes.txt
2023-11-22
Topics
Current topics
2023-11-29
Topics
Current topics
2023-12-06
Topics
Current topics
2023-12-13
Topics
Current topics
Updated: OpenVPN 2.6.9 release
Updated: forums topics
New: community funding
Updated: Donations for OpenVPN community
Website release process woes
TLS 1.0 PRF problem
License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
Tunnelcrack progress
OpenVPN community meetup 2024
Static-key mini how-to is outdated.
OpenVPN 2.6 performance results.
What's going on with new taskbar icons?
Security mailing list
Another key signing topic
SBOM topic
Management interface documentation on main website will be updated with info from doc/management-notes.txt
2023-12-20
Topics
Current Topics
New: No Meeting on 27th December or 3 January
Updated: OpenVPN 2.6.9 Release
Updated: Forums Topics
New: Status of Trac/Wiki
New: Status of Community LDAP Sign-in Solution
New: Packet Header Order
New: Plan to Improve Server Side Testing
Updated: TLS 1.0 PRF Problem
Community Funding
Donations for OpenVPN Community
Website Release Process Woes
License Amendment for OpenVPN2 to Solve OpenSSL/mbedTLS Licensing Issues
Tunnelcrack Progress
OpenVPN Community Meetup 2024
Static-key Mini How-to is Outdated
OpenVPN 2.6 Performance Results
What's Going on with New Taskbar Icons?
Security Email List
Another Key Signing Topic
SBOM Topic
Management Interface Documentation on Main Website Will Be Updated
2024/
2024-01-10
Topics
Current topics
2024-01-17
Topics
Current topics
New: small security issue reported in OpenVPN GUI
Mattock needs things to do
Closed: No meeting on 27th December or 3 January.
OpenVPN 2.6.9 release
Forums topics
Status of Trac/Wiki
Status of community LDAP sign-in solution
Packet header order
Plan to improve server-side testing
TLS 1.0 PRF problem
Community funding
Donations for OpenVPN community
Website release process woes
License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
Tunnelcrack progress
OpenVPN community meetup 2024
Static-key mini how-to is outdated.
OpenVPN 2.6 performance results.
What's going on with new taskbar icons?
security@openvpn.net mailing list
Another key signing topic
SBOM topic
Management interface documentation on main website will be updated with info from doc/management-notes.txt
2024-01-24
Topics
Current Topics
2024-01-31
Topics
Current topics
Closed: License amendment for OpenVPN2 to solve openssl/mbedtls licensing issues
New: security mailing list procedure can stand improvement
Updated: tasks related to build processes (Mattock)
Updated: OpenVPN 2.6.9 release
Updated: forums topics
packet header order
status of trac/wiki
status of community LDAP sign-in solution
plan to improve server side testing
TLS 1.0 PRF problem
community funding
Donations for OpenVPN community
Website release process woes
Tunnelcrack progress
OpenVPN community meetup 2024
Static-key mini how-to is outdated.
OpenVPN 2.6 performance results.
What's going on with new taskbar icons?
security@openvpn.net mailing list
Another key signing topic
SBOM topic
Management interface documentation on main website will be updated with info from doc/management-notes.txt
2024-02-07
2024-02-14
Pending Buildbot PRs
Buildbot
Wiki migration
Server-side testing
Easy-rsa in Windows installers
2.6.9
2024-02-21
Pending Buildbot PRs
Discussion:
Server-side testing
Easy-rsa in Windows installers
Discussion:
2024-02-28
Server-side testing
Wiki replacement
Publishing debian package snapshots
Pending Buildbot PRs
2024-03-06
Basic info
Topics
Current topics
2024-03-13
Basic info
Topics
Current topics
2024-03-20
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-03-27
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-04-03
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-04-10
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-04-17
Basic Info
Topics
Current Topics
Mattock Topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-04-24
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-05-01
2024-05-08
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-05-15
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-05-22
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-05-29
Basic info
Topics
Current topics
Mattock topics
--dev null server testing
Debian/Ubuntu snapshot publishing
2024-06-05
Basic info
Topics
Current topics
2024-06-19
Basic info
Topics
Current topics
2024-06-26
Basic info
Topics
Current topics
New: release openvpn 2.6.12
Updated: release openvpn 2.6.11
Updated: DCO and Linux upstreaming, API change
Updated: Tunnelcrack progress
Updated: OpenVPN community meetup 2024
buildbot PRs need attention
fixing openvpn3-linux builds in Buildbot
Linux arm64 buildbot workers
how to proceed with lzo2.pc
run tests of 2.x against openvpn3? how?
community.openvpn.net trac wiki
forums topics
donation collection
website release process
Status of SBOM
Security mailing list
Static-key mini how-to is outdated.
OpenVPN 2.6 performance results.
What's going on with new taskbar icons?
software code signing topic
2024-07-03
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2025/
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Meetups/
2013-Munich
who
who is coming?
where?
when?
food
what?
Internet
accommodation
results
2014-Munich
who
who is coming?
where?
when?
food
what?
Internet
accommodation
results
2015-Delft
who
who is coming?
where?
when?
food
what?
Internet
accommodation
results
2016-Helsinki
who
who is coming?
where?
when?
what?
Internet
accommodation
results
2017-Karlsruhe
who
who is coming?
where?
when?
what?
input
internet
accommodation
results
MSI
route.c / tun.c rehaul
Vagrant
block-ipv6 patch
--tls-cert-profile
argv processing clean-up (David, Heiko)
Version life cycle
Control channel optimization
2018-Lviv
Who is coming?
Where?
When?
What?
Input
Internet
Accommodation
Results
2.4.7
T-Shirts
features in 2.5 that we want
features we want in 2.6
2019-Trento
Who is coming?
When?
Where?
Entrance to the venue
City
How to get there
What?
Internet
Accommodation
Results
The way forward for NCP
Recap
2021-Munich
Who is coming?
When?
Where?
Entrance to the venue
City
How to get there
What?
Internet
Accommodation
Results
Recap
2022-Delft
Who is coming?
When?
Where?
Entrance to the venue
City
How to get there
What?
Internet
Accommodation
Results
Recap
2023-Orihuela
Dates
Venue
Who is coming?
Meeting summary
2024-Karlsruhe
Dates
Venue
Who is coming?
Meeting topics (so far)
Meeting Notes
OpenVPN 2.7
Feature Set
TIMELINE and BETA process
Future ideas
Conclusions from discussions
Compression
Static key mode
Bloom-filter DDoS protection
Wintun support
Multi-channel support
Live route updates / push-update
Multi-socket support
Merge process
Testing improvements
--cipher handling
DATA_V3 Discussion
Locked-Username-Replacement
DNS
Tunnelcrack
Repo Discussion
Mesh
Windows-DCO Multipeer (--server support)
2025-Naples
Dates
Venue
Accommodation
How to get there
✈️➡️🚆 How to reach Naples Central Station from Rome Fiumicino Airport
High-speed trains (Frecciarossa, Italo):
InterCity services:
Regional / local trains:
How to reach the Hotel Paradiso:
🚉 From Napoli Centrale (Central Station)
✈️ From Naples Capodichino Airport
Who is coming?
Schedule
Meeting notes
OpenVPN 2.7 release
DCO capability negotiation
Performance tests
Upgrade windows installer
Convert OpenVPNServ2 from C# to C
win32 remove EVERYTHING
mesh / multipeer mode
new DCO features
ASSERT()
mi prefix
OpenVPN 2.8 feature list
gerrit authentication
make buildbot interface public
check AI reports (zeropath)
Wishes:
2026-Paderborn
Venue
Accomodation
P
PQCryptoOpenVPN
pre-shared key control security (tls-crypt/tls-crypt-v2)
Post-quantum key agreement
Post-quantum signing/certificates
Pages/
AvoidRoutingConflicts
BridgingAndRouting
Bridging vs. routing
Using routing
Using routing and OpenVPN not running on the default gateway
BridgingOverview
Bridging Setup
Bridge Server on Linux
Bridge Server on Windows XP
Bridge Client configuration
Ethernet Bridging Notes
Notes -- Ethernet Bridging on Windows
Notes -- Ethernet Bridging on Linux, Setup Scripts
sample-scripts/bridge-start
sample-scripts/bridge-stop
BuildingOnWindows
BuildingOpenVPN-GUI
Prerequisites
Build steps
Building OpenVPN-GUI on Linux
BuildingTapWindows6
Requirements
Setting up the SMB share
Building
Hints
Modifying the Visual Studio project files
Installing certificates
Querying the certificate store
Creating catalog files with inf2cat
Signing files with signtool.exe
Validating signatures
External links
CertificateRevocationListExpired
CipherNegotiation
Effective directives and terms
Poor Man's NCP
Common configurations
Servers
Clients
Expected Behaviour indexed by Server version
Server version 2.5
Default configuration: No effective directives specified.
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.5 Configuring: --data-ciphers
Client version 2.3
Client version 2.2
Server version 2.4
Default configuration: No effective directives specified.
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.4 Configuring: --cipher
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.4 Configuring: --cipher and --ncp-disable
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.3
Default configuration: No effective directives specified.
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.3 Configuring: --cipher
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.2
Default configuration: No effective directives specified.
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Server version 2.2 Configuring: --cipher
Client version 2.5
Client version 2.4
Client version 2.3
Client version 2.2
Special requirement: OpenVPN built with --enable-small
Server version 2.3 built with --enable-small
Default configuration: No effective directives specified.
Client version 2.5
Server version 2.3 built with --enable-small
Configuring: --cipher
Client version 2.5
Client version 2.3 built with --enable-small
Default configuration: No effective directives specified.
Server version 2.5
Client version 2.3 built with --enable-small
Configuring: --cipher
Server version 2.5
CodeRepositories
Main development repositories (!GitHub)
Branches and tags in openvpn.git
Obsolete repositories
James' SVN repository
Old CVS repository
Compression
Background
Make Compression Secure
Asymmetric Compression is the default behaviour in OpenVPN 2.5
Bottom line
Future changes
Concepts-Addressing
Addressing Basics for Server/Client
Addressing in p2p (non-server) mode
The Address Pool
Static Address Assignment
Examples
Examples for subnet topology
subnet Example with full pool
subnet Example with static ccd
Examples for net30 topology
net30 Example with full pool
net30 Example with static ccd
Examples for p2p topology
Common client config for p2p examples
Using a /24
Advanced example: utilizing a /30
Concepts-Authentication
Authentication basics
Overview of the auth process
Authentication process details
Certificates vs. usernames
Advanced authentication options
tls-verify
client-connect
Concepts-PolicyRouting-Linux
Configuration
Conclusion
Note on another way to do it
Deprecated options
Remove clear-text VPN mode | Status: Under consideration
Change default --topology net30 to subnet | Status: Pending
Option: --key-method | Status: Removed in OpenVPN v2.5
Option: --tls-remote | Status: Removed in OpenVPN v2.4
Option: --compat-names | Status: Removed in OpenVPN v2.5
Option: --no-name-remapping | Status: Removed in OpenVPN v2.5
Option: --no-iv | Status: Removed in OpenVPN v2.5
Option: --no-replay | Status: Removed in OpenVPN v2.7
Policy: Removal of insecure ciphers | Status: To be decided
Policy: Migrate away from deprecated ciphers. Status: In progress
Option: --keysize | Status: Removed in OpenVPN v2.6
Option: --comp-lzo | Status: Pending removal
Option: --comp-noadapt | Status: Pending removal
Option: --compress | Status: Pending removal
Option: --ifconfig-pool-linear | Status: Removed in OpenVPN v2.5
Option: --client-cert-not-required | Status: Removed in OpenVPN v2.5
Option: --ns-cert-type | **Status: Pending removal
Option: --tun-ipv6 | Status: Ignored, pending removal
Policy: Automatic Up-casing of X509 Certificate field names | Status: Completed in OpenVPN 2.5
Option: --max-routes | Status: Ignored, pending removal
Option: --dhcp-release | Status: Ignored, pending removal
Option: --route-nopull | Status: To be decided
Option: --genkey --secret | Status: Deprecated, pending removal
Option: --secret | Status: Deprecated, pending removal
Option: --ncp-disable | Status: Removed in OpenVPN v2.6
plugin: _v1 and _v2 functions for open and func call | Status: Pending removal
Option: --inetd | Status: Removed in OpenVPN v2.6
Windows: openvpn-legacy-service | Status: Removed
Option: --persist-key | Status: To be decided
Option: --verify-hash | Status: Pending removal
Option: --link-mtu | Status: Pending Deprecation
Option: --management-client-pf | Status: Removed in OpenVPN v2.6
Option: --prng | Status: Ignored, pending removal
Option: --opt-verify | Status: Deprecated, pending removal
Option: --disable-occ | Status: Deprecated, pending removal
NTLM v1 authentication support in --http-proxy | Status: Deprecated, pending removal
NTLM v2 authentication support in --http-proxy | Status: To be deprecated in 2.7
Easy Windows Guide
Downloading and Installing OpenVPN
Installing manually
Installing with Chocolatey
Certificates and Keys
Preparatory Steps
Building Certificates and Keys
Configuration Files
Server Config File
Client Config Files
Enable IP forwarding on OpenVPN server
Enable packet forwarding on the Cloud provider
Starting OpenVPN
Further Considerations / Troubleshooting
Firewall Configuration
Port Forwarding
Static Internet IP
Running OpenVPN as a Service
Enabling OpenVPN service using services.msc
Enabling OpenVPN service using Powershell
Security Tips
Cloning OpenVPN Servers
EasyRSA
Easy-RSA v2
Upgrade from Easy-RSA v2 to Easy-RSA v3
EasyRSA3-OpenVPN-Howto
Process Overview
Easy-RSA and MITM protection with OpenVPN
PKI procedure: using a separate CA system
DH Generation
PKI procedure: Producing your complete PKI on the CA machine
Fix for site-to-site OpenVPN on ubiquiti unifi routers
Background
The problem
The fix
How to fix
Getting help
Introduction
User Support
Documentation
User IRC Channel
User Support Forums
User Mailing List
Developer Support
Developer IRC Channel
Developer Mailing List
Security Issues List
OpenVPN Access Server Support
Access Server Support Ticket System
Access Server Forum Boards
Getting started with OpenVPN
Setting up the connection
Configuring encryption
Configuring authentication
TLS Authentication
Username / password authentication
Even stricter certificate checks
Adding certificate revocation lists
Configuring the network layer
Routing everything over the VPN
What about IPv6?
Other aspects to consider when configuring a VPN
Getting tap-windows
Fetching tap-windows source code
Getting tap-windows releases
GettingEasyRsa
Fetching easy-rsa using Git
Getting easy-rsa releases
Hardening
Hardening OpenVPN
Practice secure PKI management
X.509 key size
Use of --tls-version-min
Use of --tls-cipher
Use of --tls-auth
HowPacketsFlow
How_does_PKI_work
It's (almost) all about Certificates
The Certificate Authority
Preparing a CA
Servers and their certificates
Clients and their certificates
Invalidating certificates
IPv6
Overview
Providing IPv6 outside the tunnel
Providing IPv6 inside the tunnel
Requirements
Details: IPv6 routed block
Additional OpenVPN config
Config stanza using the helper
Config stanza with expanded directives
Pushing IPv6 routes
Splitting a single routable IPv6 netblock
Split netblock configuration
Client issues
IgnoreRedirectGateway
Method 1: filter the pushed option
Method 2: ignore
Method 3: override
Managing TAP-Windows drivers
Manual configuration of the TAP-Windows adapter
Installing and uninstalling TAP-drivers
Extracting TAP-drivers from OpenVPN installers
Windows TAP device naming
Renaming the TAP-driver
Debugging installation problems
NatHack
Why NAT-hack?
openVPN server on Linux
openVPN server on Windows XP
To set up a route on the clients
NonEnglishResources
French (Français)
German (Deutsch)
Spanish (Español)
Japanese (日本語)
Poland (Polish)
Russian (Русский)
OpenVPN software repos
Repository HOWTOs
Fedora / RHEL: Using Fedora Copr
OpenVPN kernel module (DCO)
Debian / Ubuntu: Using OpenVPN apt repositories
OpenVPN kernel module (DCO)
Notes on expired keys
Debian/Ubuntu: Using openSUSE Buildservice for master snapshot packages
openSUSE/SLES: Using openSUSE Buildservice
OpenVPN-GUI-New
Locating the OpenVPN-GUI
Preparing your installation to use the OpenVPN-GUI successfully
Importing your first connection profile (config file) into the OpenVPN-GUI
Setting up membership of the OpenVPN Administrators local group
Navigating the OpenVPN-GUI menus
Viewing the log file
Editing the configuration file
Entering Username and Password
Trouble shooting
OpenVPN-GUI Settings
The Settings menu, General tab
The Settings menu, Proxy tab
The Settings menu, Advanced tab
The Settings menu, About tab
Built-in help
Contributing
Common connection problems
Known issues
OpenVPN25_Windows_MSI_Unattended_Install
OpenVPN3Linux
Pre-built packages
Footnotes
Stable repository - Debian / Ubuntu
Stable repository - Red Hat Enterprise Linux
Development/beta repository - Debian / Ubuntu
Fedora Copr repository - Fedora / Red Hat Enterprise Linux
OpenVPN Data Channel Offload
Quick start - how to use OpenVPN 3 Linux
Using openvpn2
Using openvpn3
Starting a one-shot configuration profile
Importing a configuration file for re-use and starting a VPN session
Starting a new VPN session from an imported configuration profile
Managing a running VPN session
Further information
OpenVPNBridging
Do you need bridging?
Bridge setup
Permanent vs. transient bridge
Windows
Linux
Debian-like (Debian, Ubuntu and derivatives)
Redhat-like (RHEL, CentOS, Fedora)
Mac OS X
FreeBSD
Solaris
OpenVPN configurations
Server configuration
Linux
Mac OS X
FreeBSD
Solaris
Client configuration
OpenVPNInteractiveservice
Introduction
How It Works
Client-Service Communication
Connecting
openvpn.exe Startup
openvpn.exe Process ID
openvpn.exe Monitoring and Termination
Error Messages
Interactive Service Configuration
Multiple Interactive Service Instances
Installing a Non-default Interactive Service Instance
Openvpn-systemd-use
Verify OpenVPN systemd support
Using OpenVPN with systemd support
Start at boot
Interrogate systemd
Use journalctl
Notes
Known issues
OpenvpnBooks
OpenvpnLogosAndIcons
OverviewOfOpenvpn
OpenVPN Access Server (OAS)
What can you do with OpenVPN?
What distinguishes OpenVPN from other VPN packages?
PluginOverview
OpenVPN Plugins
Existing Plugins
Fully maintained by OpenVPN maintainers
Sample plugins in the OpenVPN source tree (not considered "ready for production")
Plugins maintained elsewhere
Documentation
Pushing-DNS-to-clients
Using DNS servers pushed to a Linux client
Using DNS servers pushed to a Windows client
Additional notes
RelatedProjects
Windows client GUI
Windows System Service
Active projects
Ports
Client GUI
Management GUI
Certificate management
Authentication
Patchsets / modifications ==
Services
Non-OpenVPN services
Misc
Inactive projects
RoutedLans
ROUTES TO ADD OUTSIDE OF OPENVPN
Caveats
Supported versions
Current releases and support categorization
Support categories
Supported Windows versions
Suppported OpenSSL versions
Sources for binary packages:
Systemd
OpenVPN systemd use
Build OpenVPN with systemd support
Using OpenVPN with systemd support
Known issues
Tap rename script
Description
TapRenameScript
Description
Tapctl
Introduction
User Manual
Creating a TAP/TUN network interface
Listing installed TAP interfaces
Removing a TAP interface
Developer Notes
Source files
Topology
Possible topology choices
Topology subnet
Example subnet configs
Topology net30
Example net30 configs
Topology p2p
Example p2p configs
TrafficObfuscation
Use static keys
Use obfsproxy
A quick obfsproxy setup
Client side
Server side
UnprivilegedUser
Init Script
Wrapper for ip
Secure Wrapper
TUN/TAP Device
User
Config Changes
Usage
Troubleshooting
Init Script
Logs
Sudo
Permissions
SELinux
Run OpenVPN within unprivileged podman container
Using-mbedtls
Limitations compared to OpenSSL
Building the mbedtls-enabled OpenVPN
Using_Certificate_Chains
Certificate chains versus stacked certificates
How to use certificate chains in OpenVPN
WikiCredentials
WindowsBrowsing
Overview of Solution Options
Using local DNS
Using public DNS
Using WINS
Using tap
easy_rsa_fr
Installation
Créer son propre certificat d'autorité racine de certification (root CA)
Créer un certificat d'autorité intermédiaire de certification (optionnel)
Créer les paramètres Diffie-Hellman
Créer une requête de signature de certificat
Signer une requête de signature de certificat
Créer et signer une requête de signature de certificat à l'aide d'un certificat racine installé en local
Important
Notes
easyrsa-upgrade
Setup
Examples
Usage
Steps
Before
After
Fails
Incompatible vars file
Too many vars files #ersa-up23-fails-vars-bat
CA certificate does not match vars/vars.bat file settings
v30x to v306
Debian-based distros
Help
reset-network-tcp-ip-stack
Reset Network TCP/IP stack
Windows XP
Windows Vista, 7, 8, 10
R
ReleaseHistory
OpenVPN 2.7.0 -- Released 11 February 2026
OpenVPN 2.6.19 -- Released 4 February 2026
OpenVPN 2.6.18 -- Released 4 February 2026
OpenVPN 2.7_rc6 -- Released 28 January 2026
OpenVPN 2.7_rc5 -- Released 15 January 2026
OpenVPN 2.7_rc4 -- Released 17 December 2025
OpenVPN 2.7_rc3 -- Released 28 November 2025
OpenVPN 2.6.17 -- Released 28 November 2025
OpenVPN 2.7_rc2 -- Released 17 November 2025
OpenVPN 2.6.16 -- Released 17 November 2025
OpenVPN 2.7_rc1 -- Released 31 October 2025
OpenVPN 2.7_beta3 -- Released 13 October 2025
OpenVPN 2.7_beta2 -- Released 25 September 2025
OpenVPN 2.6.15 -- Released 22 September 2025
OpenVPN 2.7_beta1 -- Released 04 September 2025
OpenVPN 2.7_alpha3 -- Released 31 July 2025
OpenVPN 2.7_alpha2 -- Released 19 June 2025
OpenVPN 2.7_alpha1 -- Released 28 May 2025
OpenVPN 2.6.14 -- Released 02 April 2025
OpenVPN 2.6.13 -- Released 15 January 2025
OpenVPN 2.5.11 -- Released 18 July 2024
OpenVPN 2.6.12 -- Released 18 July 2024
OpenVPN 2.6.11 -- Released 20 June 2024
OpenVPN 2.5.10 -- Released 21 March 2024
OpenVPN 2.6.10 -- Released 20 March 2024
OpenVPN 2.6.9 -- Released 12 February 2024
OpenVPN 2.6.8 -- Released 17 November 2023
OpenVPN 2.6.7 -- Released 09 November 2023
OpenVPN 2.6.6 -- Released 15 August 2023
OpenVPN 2.6.5 -- Released 13 June 2023
OpenVPN 2.6.4 -- Released 11 May 2023
OpenVPN 2.6.3 -- Released 13 April 2023
OpenVPN 2.6.2 -- Released 24 March 2023
OpenVPN 2.6.1 -- Released 8 March 2023
OpenVPN 2.5.9 -- Released 15 February 2023
OpenVPN 2.6.0 -- Released 25 January 2023
OpenVPN 2.6_rc2 -- Released 12 January 2023
OpenVPN 2.6_rc1 -- Released 28 December 2022
OpenVPN 2.6_beta2 -- Released 15 December 2022
OpenVPN 2.6_beta1 -- Released 2 December 2022
S
Security Announcements
Announcements
CCSInjection
What does the CCS Injection Vulnerability mean?
What should I do?
Do I need to create new private keys and certificates?
Do the six other OpenSSL vulnerabilities affect OpenVPN?
CVE-2016-10229
References
Distribution notes
CVE-2017-12166
CVE-2018-7544
Why do we dispute this CVE?
1. Management interface is disabled by default
2. Management interface access is exclusive
3. Management interface is forgiving by design
4. The management interface supports password authentication
5. The management interface's availability
6. OpenVPN cannot protect users against improper configuration or usage by itself
Conclusion
What has been done
CVE-2020-15078
Overview
Detailed description
Fixed OpenVPN versions
Recommendations
CVE-2021-3547
CVE-2021-3606
CVE-2022-0547
CVE-2023-46849
CVE-2023-46850
CVE-2023-6247
Note
References
CVE-2023-7235
References
CVE-2024-1305
References
CVE-2024-13454
CVE-2024-24974
References
CVE-2024-27459
References
CVE-2024-27903
References
CVE-2024-28882
References
CVE-2024-4877
References
CVE-2024-5198
References
CVE-2024-5594
References
CVE-2025-10680
CVE-2025-12106
CVE-2025-13086
CVE-2025-13751
CVE-2025-15497
CVE-2025-2704
CVE-2025-3908
CVE-2025-50054
CVE-2026-2738
DUHKattack
Background
How is OpenVPN affected?
NSISBug1125
QuarkslabAndCryptographyEngineerAudits
Quarkslab findings
Quarkslab 5.1: Pre-authentication Denial of Service
Quarkslab 5.2: Denial of Service due to Exhaustion of Packet-ID counter
Quarkslab 5.3: Invalid Retrieval of X.509 Certificate Fields With mbed TLS
Quarkslab 5.4: !Usernames/Passwords not Erased from Memory
Quarkslab 5.5: NULL Pointer Dereference in the Data Compression Stub
Quarkslab 5.6: Invalid Size Parameter Passed when Retrieving the Program Application Path
Quarkslab 5.7: Leak of Service Manager Handles in OpenVPN GUI
Cryptography Engineering findings
OVPN-01: Sensitive authentication token not wiped on certain TLS authentication errors
OVPN-02: Potentially flawed TLS control channel encryption
OVPN-02-1: Potentially flawed TLS control channel encryption: IV collision
OVPN-02-2: Potentially flawed TLS control channel encryption: ciphertext is not MAC'ed
OVPN-03: Insecure configuration options
OVPN-03-1: Insecure configuration options: --prng
OVPN-03-2: Insecure configuration options: --no-iv
OVPN-03-3: Insecure configuration options: --no-replay
OVPN-03-4: Insecure configuration options: --reneg-bytes
OVPN-03-5: Defaulting to --cipher BF-CBC and --auth SHA1
OVPN-03-6: Insecure configuration options: encryption without authentication
OVPN-04: Possible NULL pointer dereferences
OVPN-04-1: Possible NULL pointer derefence in contrib/keychain-mcd/cert_data.c
OVPN-04-2: Possible NULL pointer dereference in sample-plugins/defer/simple.c
OVPN-04-3: Possible NULL pointer dereference in src/openvpn/proxy.c
OVPN-05: Possible allocation of zero bytes with malloc
OVPN-06: Remove workaround to support obsolete versions of OpenSSL (v0.9.6b)
OVPN-07: Remove system() from sample authentication plugin
OVPN-08: OpenVPN configuration risks
OVPN-08-1: OpenVPN configuration risks: --script-security 3
OVPN-08-2: OpenVPN configuration risks: --tls-verify
OVPN-08-3: OpenVPN configuration risks: --comp-lzo
SWEET32
Am I affected?
Mitigation
1. Change to a larger block cipher
2. Renegotiate more often
3. Cipher negotiation (OpenVPN 2.4 and newer)
References
SecurityAnnouncement-97597e732b
Scope of the vulnerability
Mitigating factors
Has OpenVPN been successfully exploited?
How do I fix this?
Is Access Server affected?
SecurityAnnouncement-FREAK
SecurityAnnouncement-f375aa67cc
Severity
Affected versions
SecurityOverview
Authentication Modes in OpenVPN
Static Key Mode
TLS Mode
Tunnel Operation
OpenVPN Protocol
SecurityVulnerabilities
How we handle security issues
TLSTripleHandshakeVulnerabilityAndOpenVPN
TapWindows6BufferOverflowVulnerability
TunnelCrack
Background
Mitigation
Note regarding TunnelVision
UnquotedServicePathIn24WindowsInstallers
Original Nessus report
Description
Solution
See Also
Output
VORACLE
Background
Simplified Example
Compression is NOT enabled by default
Mitigation
Community edition: OpenVPN 2.3.x and OpenVPN 2.4.x
Commercial products: Access Server
Commercial products: OpenVPN Connect
Commercial products: Private Tunnel
But I really need compression
The plan forward
VulnerabilitiesFixedInOpenSSL1_0_1i
List of vulnerabilities
VulnerabilitiesFixedInOpenSSL1_0_1j
List of vulnerabilities
VulnerabilitiesFixedInOpenSSL1_0_1m
Vulnerabilities that may affect OpenVPN
Vulnerabilities that do not affect OpenVPN
Mitigating factors
VulnerabilitiesFixedInOpenVPN243
Vulnerabilities
Remotely-triggerable ASSERT() on malformed IPv6 packet
Pre-authentication remote crash/information disclosure for clients
Potential double-free in --x509-alt-username
Remote-triggerable memory leaks
Post-authentication remote DoS when using the --x509-track option
Null-pointer dereference in establish_http_proxy_passthru()
Issues with little to no practical security impact
heartbleed
What does this mean?
Am I affected too?
Has OpenVPN been successfully exploited?
How do I fix this?
Is this for clients or servers?
Are Android clients affected too?
What about Tunnelblick for MacOS X
What about Windows clients?
Is Access Server affected?
Are OpenVPN Connect clients affected
Are PolarSSL builds affected too?
Do TLS-auth keys protect my setup?
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