[root@myserver ~]# netstat -tulpn | grep :22
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      2263/sshd           
tcp        0      0 :::22                       :::*                        LISTEN      2263/sshd  

Port 777

-A INPUT -m state --state NEW -m tcp -p tcp --dport 777 -j ACCEPT

[root@myserver ~]# service sshd restart
Останавливается sshd:                                      [СБОЙ ]
Запускается sshd:                                          [  OK  ]

Jul 26 01:01:07 myserver sshd[1590]: error: Bind to port 777 on 0.0.0.0 failed: Permission denied.
Jul 26 01:01:07 myserver sshd[1590]: error: Bind to port 777 on :: failed: Permission denied.
Jul 26 01:01:07 myserver sshd[1590]: fatal: Cannot bind any address.