I ran across an issue with ssh after fresh Ubuntu 13.10 installation on Lenovo T420. I tried git pull (which failed) and this led me to more general ssh failing.After spending some 2-3 hrs of beautiful Sunday morning I have established:ssh is able to authenticate. see the log below. Also telnet google.com 80 hangs on connecting.I can connect using putty - it shows motd and promptIt doesn't work on both wired and wireless connections, also I tried cellular network.I can successfully login to localhosthere be the log:debug1: Authentication succeeded (keyboard-interactive).Authenticated to web1.mydevil.net (via proxy).debug1: channel 0: new [client-session]debug1: Requesting no-more-sessions@openssh.comdebug1: Entering interactive session.debug1: Sending environment.debug1: Sending env LC_PAPER = pl_PL.UTF-8and then just keeps sending debug1: client_input_channel_req: channel 0 rtype keepalive@openssh.com reply 1without showing me the prompt and eventually disconnects. I found out that telnet google.com 80 hangs on Connecting <IP-addr>... as well.
OpenSSH hangs after login without showing login prompt
ubuntu;networking;ssh;openssh;telnet