Comment by jofla_net

I have a similar program, which i call Relay, which effectively works exactly the same. Haven't worked on it in over 10 years but like OP i was in a similar situation, and it worked nicely, but really theres so much more that can be done in the obfuscation field. I eventually moved on to a more elaborate Java version, which worked very well when emulating, of all things, a TeamViewer connection, which had to be allowed on the network in question. So unless the firewall wanted to open up the ssl inside of it and examine in real time, i ended up not tipping it off. I'll add a very basic version of it for educational value if you want. It might not be exactly functional the way i remember but at least it shows how to chain a socket connection in code.

http://www.jofla.net/C++__/OWRTRelay/

Its a very minimal C program which was originally targeted for OpenWRT. But being C it should run easily most places. One would run on a router on a final remote server and another on a travel router which you would tether to.

YourPC <---> Your Travel Router <----internet----> Stationary Router <---> Final Server

Setting up the ports accordingly you had something which basically 'patched' the bytestream in the middle without it even knowning or needing to be changed on either end. It could relay any TCP connection.

There were many dialects which I eventually came up with (especially per packet length obfs) which could be added to the old C program.

Happy Hunting.