SSH server

The NSA-310/NSA-320 and NSA-325 all had a build-in ssh server, starting at firmware 4.22. (Maybe earlier).

To start the server, login as admin on the webinterface, then enter the url: http:///zyxel/cgi-bin/remote_help-cgi?type=sshd_tdc

The server will start, and you can login as root, using your admin password.

On firmware 4.40, the SSH backdoor has been disabled. You can still use the Telnet backdoor