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I often have to work behind "smoothwall". AFAIK, it only allows HTTP over port 80 and HTTPS on port 443 - any other protocol on any other port gets blocked, inc

I often have to work behind "smoothwall". AFAIK, it only allows HTTP over port 80 and HTTPS on port 443 - any other protocol on any other port gets blocked, including other protocols over port 80/443. To bypass this, I wrote a simple ruby script to tunnel TCP connections, while adding fake HTTP headers to get through the firewall.

voltagex_ 11y ago
Can you share that script?
- thatcat 11y ago
  obfsproxy with obfs3 as a pluggable transport does somthing similar, it's made for tor bridges but i'm sure you could use it for vpn traffic too. https://www.torproject.org/projects/obfsproxy.html.en https://www.torproject.org/projects/obfsproxy.html.en https://gitweb.torproject.org/pluggable-transports/obfsproxy.git/tree/doc/obfs3/obfs3-protocol-spec.txt https://gitweb.torproject.org/pluggable-transports/obfsproxy...
derefr 11y ago
With only a bit of extra state-machine glue, you'd have a clean and standards-compliant websocket-based VPN.