Issue of connection SSH and tunnel TELNET STP EAGLE

Dear Colleagues,

I made an automatization to get command logs about STP over LINUX but sometimes I have followed the issue "Connection to IP closed by remote host." and the port is inhibited.

I used this command for connection through a swap and expect.

ssh -N -f -L 29950:localhost:23 IP; sleep 3;telnet localhost 29950

Maybe, Could We establish a trust relationship between STP and my server? But over STP. 

Thanks for your help.