Solution when the sshd connection is not on Linux

1, first change the SSH configuration, can be SSH port is not connected to the server
Cd/etc/ssh/sshd_config
VI!$
Port 52113//ssh The default connection port, instead of the one nobody knows
Permitrootlogin no//root the user knows, still telnet
Permitemptypasswords No//disable blank password login
Usedns no//Do not use DNS
After joining,/etc/init.d/sshd restart NETSTAT-LNT view port, or lsof-i: 52113 to see what service the port has

2. At this time with 22 port is not connected to the server, if it is just contact with the machine, how to deal with this problem?

Solution when the sshd connection is not on Linux