I'm trying to set up SSH connection with a PC that is behind the DSL router.
I do know that to do that - I need to turn off firewall on the router and set up port forwarding.
So my firewall is off.
Forwarding is set up (according to this manual: http://qwest.centurylink.com/internethelp/modem-pk5000z-adv-port-forwarding.html
SSH to localhost works.
SSH through global IP doesn't work (just keeps connecting until I turn it off).
Is there anything else I need to do on ZyXel? I was setting up same thing on TP-Link router - and it took me two minutes.