Linux system modifies remote connection port number and closes remote link

Linux Modify SSH port

Vi/etc/ssh/ssh_config

Vi/etc/ssh/sshd_config

Then change to port 8888

As Root service sshd restart (Redhat AS3)

Using putty, Port 8888

Linux under the default SSH port is 22, for security reasons, now modify the SSH port is 1433, modify the method as follows:

/usr/sbin/sshd-p 1433

To enhance security

Add a user with normal permissions first:

#useradd Uploader

#passwd Uploader

Set Password

The production machine prohibits root remote SSH logon:

#vi/etc/ssh/sshd_config

Put

Permitrootlogin Yes

To

Permitrootlogin No

Restart the sshd service

#service sshd Restart