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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

  1. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 1How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 1
    Sudo to root. You will need to modify superuser file.
  2. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 2How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 2
    Open the config file for the banner. Type vim /etc/issue.net
  3. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 3How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 3
    Read the file. You will get a screen similar to the one shown.
  4. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 4How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 4
    Add your message. Next just below the lines of Debian 6.0, type any custom message you feel.
  5. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 5How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 5
    Check the look of the file. The issue.net file looks as shown
  6. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 6How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 6
    Exit out of this file. Save the changes by typing EscKey + !wq
Part 2 of 3:

Configuring SSH Daemon

  1. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 7How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 7
    Close SSH if running. You need to make SSH understand that you need to enable the Banner Message.
  2. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 8How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 8
    Open the configuration file. Issue the command, vim /etc/ssh/sshd_config
  3. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 9How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 9
    Modify the file. Now in the sshd_config file, you need to uncomment the Banner portion as shown
  4. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 10How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 10
    Start SSH. Issue the command --> /etc/init.d/ssh restart
  5. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 11How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 11
    Wait until restarted. The OpenSSH Server Daemon process will restart.
Part 3 of 3:

Testing the Message

  1. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 12How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 12
    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
  2. How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 13How to Set Up a Custom Banner Message in Your Ubuntu Linux Machine for Remote Users Picture 13
    Type yes to connect.
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