How to use OpenVPN through a restrictive firewall?

Posted by R.L. Stine on Super User See other posts from Super User or by R.L. Stine
Published on 2012-09-25T20:24:04Z Indexed on 2012/09/25 21:39 UTC
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Filed under:

networking

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security

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vpn

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firewall

I'm currently in the situation of attempting to setup OpenVPN on a personal VPS, for connection primarily through an overly restrictive firewall. All of the setups mentioned below work when used through a reasonably-firewalled connection.

I have tried:

OpenVPN running on the standard port
OpenVPN running on port 443 (I start OpenVPN manually from the command line on the VPS and see that the server reports the connection being closed almost immediately, I assume this is a result of DPI on the firewall)
STunnel running on port 443 to access OpenVPN and evade DPI. This is the most successful and allows a connection and internet access through the VPN for ~10-20 seconds, before the connection is forcibly closed.

Is there anything else I can attempt?

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