Change SSH Login message from Linux and Unix

 Unix method:

$ cd /etc/ssh/  or /opt/ssh/etc
$ vi ssh-banner

Type in the Warning message you want such as the one below, then save the file.

******************************************************************************

IT IS AN OFFENSE TO CONTINUE WITHOUT AUTHORIZATION.

This system is restricted to authorized employees. 
 unauthorized access will be prosecuted. If unauthorized, close
 access now!

*******************************************************************************

After creating the banner file, edit the ssh configuration file

$ vi sshd_config

Look for the part below on sshd_config
# no default banner path 
#Banner /path/banner file

And change it to
# no default banner path
Banner /etc/ssh/ssh-banner or /opt/ssh/etc/ssh-banner
Save the file then restart SSH

$ /etc/init.d/ssh restart or

HP UX => # /sbin/init.d/secsh stop and

# /sbin/init.d/secsh start

SOLARIS => # svcadm restart network/ssh 

 

Linux method:

First off login to our server as root. Then type in the following:

vi /etc/motd

Now type in the security login message you wish all users to see once they login to your server through SSH.

Type this message:

******************************************************************************

IT IS AN OFFENSE TO CONTINUE WITHOUT AUTHORIZATION.

This system is restricted to authorized employees. 
 unauthorized access will be prosecuted. If unauthorized, close
 access now!

*******************************************************************************

After juste type Esc : x! and Enter.

Logout of SSH then log back in, you will receive your new message!