Running Ubuntu 12.04, I've set up the OpenSSH server. I can connect from within LAN, but not from outside. I am using the same sshd_config
file as on my other Ubuntu 12.04 machines (that sit in a different LAN).
$ ssh 192.168.0.2
works fine, but
$ ssh 65.76.97.222
(made up IP address) does not work. Nothing happens. No error message, or anything. The prompt just sits there.
Thanks to comments below, I have managed to verify via websites canyouseeme.org and ShieldsUP that port 22 is indeed open.
Using the option -vvv
, I get the following:
$ ssh -vvv 65.76.97.222
OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 65.76.97.222 [65.76.97.222] port 22.
debug1: Connection established.
debug1: identity file /home/myname/.ssh/id_rsa type -1
debug1: identity file /home/myname/.ssh/id_rsa-cert type -1
debug1: identity file /home/myname/.ssh/id_dsa type -1
debug1: identity file /home/myname/.ssh/id_dsa-cert type -1
debug1: identity file /home/myname/.ssh/id_ecdsa type -1
debug1: identity file /home/myname/.ssh/id_ecdsa-cert type -1
And then the prompt just sits there.
Further debug information from var/log/auth.log
:
$ grep sshd /var/log/auth.log
[cutting old lines...]
Jul 6 10:23:05 mymachine sshd[7871]: Did not receive identification string from 65.76.97.222
I am allowing any user to connect, in particular my own username. What confuses me is that I have not had this problem on any other machine, although they are on a different lan. This lan has only one computer attached to it. Any ideas of how to proceed from here?
-v
,-vv
, to-vvv
) to get extra info re: the connection. e.g.,ssh -vvv -p 51555 65.76.97.222
.