How to setup Logon Banners in Linux

There are two ways where we can place the banner for the Server :

To Display SSH Warning / Legal Notice message to users before logon:

[1] Open the file as below:

Place the content of the notice in this file :

[2]  Open the sshd configuration file for the changes: Look for the work “Banner” at the end of the file:

Replace as below in /etc/ssh/sshd_config file:

[3] To take effort we need to restart the SSH Service:

[4] Now try to login and you will displayed with the Banner and then with the password prompt.

To Display the SSH Notice/Warning after the User Login:

 Open the file as below:

Place the content of the notice in this file :

Alternatively, you can also configure in sshd config file /etc/ssh/sshd_config:

Create the file named /etc/banner:

Now, Configure the ssh configuration file. Sample /etc/ssh/sshd_config file and add the line Banner /etc/banner to it, for example:

Then restart the SSHD Service to take effort:

That’s all… Try to SSH the box with your login ..