Linux how to modify the default port number of SSH?
In the installed linux，By default ssh is open，Vulnerable to hacker attacks，simple，Effective action is to modify one of the default port number
Such as the following，We modify my 22 2501
It is to modify / etc / ssh / sshd_config // note，Easy and ssh_config mixed
step one
[root@localhost ssh]# more sshd_config
# $OpenBSD: sshd_config,v 1.69 2004/05/23 23:59:53 dtucker Exp $
# $OpenBSD: sshd_config,v 1.69 2004/05/23 23:59:53 dtucker Exp $
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.
#Port 22 //Comment out the first 22
port 2501 //Add a new port
#Protocol 2,1
port 2501 //Add a new port
#Protocol 2,1
Step Two
[root@localhost ~]# service sshd restart
Stopping sshd:[ OK ]
Starting sshd:[ OK ]
Stopping sshd:[ OK ]
Starting sshd:[ OK ]
Step Three
Testing with SecureCRT
