I have a MineOS Turnkey server running on my university's network and its locked behind their firewall. I have been able to connect to their Linux servers using SSH and then SSH to my server from there, however, I don't know how to tunnel the connection from a Minecraft client on my computer to the server I have double SSHed to. While on their network I can easily connect to the server; however, as I'm on break, I don't have direct access to the network.
Appears to be related to this question https://gaming.stackexchange.com/questions/21848/how-can-i-play-minecraft-through-a-proxy-server
You can either port forward or create a SOCKS proxy. Check
ssh -L or
ssh -D in the SSH manual.
If port forwarding you have to use
localhost as the Minecraft server address. For SOCKS proxy, check out
--proxyPort as an argument when running the JAR file. Hints from http://hydra.geht.net/tino/howto/software/minecraft/proxy/
Download minecraft.jar (this is Minecraft for Linux) and run it as follows: java -Dhttp.proxyHost=PROXYHOST -Dhttp.proxyPort=PROXYPORT -Dhttps.proxyHost=PROXYHOST -Dhttps.proxyPort=PROXYPORT -jar d:\minecraft\minecraft.jar --proxyHost SOCKSHOST --proxyPort SOCKSPORT Replace following words above with: PROXYHOST: your HTTP proxy IP PROXYPORT: is your HTTP proxy port, usually 8080 SOCKSHOST: is your SOCKS5 proxy IP SOCKSPORT: is your SOCKS5 proxy port, usually 1080