And it has mostly been backwards compatible on the most important features through all these years.

But the world moves forward, security issues are discovered, and expectations of how a secure VPN should be configured have changed over the years.Īs OpenVPN carries a lot of options (over 230), we need to do a clean-up here from time to time. The main goal is to be as backwards compatible in regards to the configuration files as possible. We do not recommend running any older OpenVPN releases than the latest v2.3 series. Whenever possible you should always upgrade to the latest available OpenVPN release.

But some times we unfortunately need to remove old options as they impose a security risk to VPN configurations.

In this wiki page, we will try to keep an up-to-date list of all options we have deprecated, when they will be removed, the new alternative approach and the reasoning behind removing the option.

This wiki page summarizes the 'Deprecated features' section in the Changes.rst file which is distributed with the source code.

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.

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