/simple_tunnel_ssh

Primary LanguageC

Simple Tunnel SSH

Motivation

  • Set up a socket server to maintain a ssh session.
  • This can prevent ssh client from exploiting over-connection to the server, which maybe consider as an attack.
  • How it works:
    • In request: (Targe server) <---by ssh---< (tnlssh) <---by socket---< (tnlclient)
    • The response vice versa.

How to use ?

  • Firstly, run make. It'll generate tnlssh, example and libtnlc.so.
  • tnlssh is the server that runs socket server and ssh client.
  • example is an example that shows how to use tnlclient with libtnlc.so.
  • Run tnlssh <password> <username> <ip> <port> to start the server.

MISC

  • These codes are based on libssh which you can find here.
  • tnlssh will send an ignored message of ssh every 10 minutes to keep session.
  • After calling tnlclient, the return value must be free since it is allocated by realloc.