[SOLVED] My SSH isn't working suddenly

timebirds · 03-15-2012, 06:08 PM

Running Ubuntu 11.04.

No firewall or anything.
I'm really confused, and not being able to copy and paste on VPN is killing me.

Sorry for the lack of details, it just suddenly happened.

eSelix · 03-15-2012, 07:03 PM

Code:

/etc/init.d/ssh stop
/etc/init.d/ssh start
ps -Af | grep ssh
tail /var/log/syslog
tail /var/log/auth.log

What is output of these commands?

timebirds · 03-15-2012, 07:15 PM

Code:

/etc/init.d/ssh stop
/etc/init.d/ssh start
ps -Af | grep ssh

the pics are in order

timebirds · 03-15-2012, 07:18 PM

Code:

tail /var/log/syslog
tail /var/log/auth.log

these are in order too

eSelix · 03-15-2012, 07:35 PM

As you see in auth.log screenshot you have bad permissions on files /etc/ssh/ssh_host_rsa_key, /etc/ssh/ssh_host_dsa_key and probably /etc/ssh/ssh_host_ecdsa_key. These files should be not accesible by other, so change permissions for example that:

Code:

chmod 0600 /etc/ssh/ssh_host_rsa_key
chmod 0600 /etc/ssh/ssh_host_dsa_key
chmod 0600 /etc/ssh/ssh_host_ecdsa_key
chown root:root /etc/ssh/ssh_host_rsa_key
chown root:root /etc/ssh/ssh_host_dsa_key
chown root:root /etc/ssh/ssh_host_ecdsa_key

And restart ssh.

timebirds · 03-15-2012, 07:42 PM

Thank you so much. The community here is so helpful.