How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users

This How-to will enable you to set up a custom banner message to users who read your Banner Message and decide to enter your System at their own risk, else be warned about not trying to log in. We will be first editing a file called...

Part 1 of 3:

Adding a Welcome Message

Sudo to root. You will need to modify superuser file.
Open the config file for the banner. Type vim /etc/issue.net
Read the file. You will get a screen similar to the one shown.
Add your message. Next just below the lines of Debian 6.0, type any custom message you feel.
Check the look of the file. The issue.net file looks as shown
Exit out of this file. Save the changes by typing EscKey + !wq

Part 2 of 3:

Configuring SSH Daemon

Close SSH if running. You need to make SSH understand that you need to enable the Banner Message.
Open the configuration file. Issue the command, vim /etc/ssh/sshd_config
Modify the file. Now in the sshd_config file, you need to uncomment the Banner portion as shown
Start SSH. Issue the command --> /etc/init.d/ssh restart
Wait until restarted. The OpenSSH Server Daemon process will restart.

Part 3 of 3:

Testing the Message

Connect via localhost. After this is done, you can test it by issuing a test login via localhost by issuing the following command ssh localhost
Type yes to connect.

Lesley Montoya

Update 04 March 2020

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