can't ssh remotely, ssh port is closed from outside

I was able to ssh in remotely to my droplet yesterday. I didn’t change anything but I can’t do it today. I use the standard WordPress on Ubuntu 14.04 droplet.

I can ssh locally back to the server using the droplet console. I’ve tested from other IP (using http://www.infobyip.com/sshservertest.php ) and it doesn’t work either. Web server on port 80 works.

The firewall seems to be empty:

ipchains -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
 
Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
 
Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

I also checked /var/log/kern.log when I tried to connect, nothing. I tried to restart the droplet, didn’t help.

I’m kind of lost what else should I try Is there a firewall front of my droplet which might block my ssh? Is there any other diagnostic you could recommend to locate the issue? I would appreciate any help.