Do you know? You can turn off the banner in Linux or Unix using a particular file. We will walk through how to configure them.
These are the two types of banners you can configure.
- Banner message to display before user logs in (configure in the file of your choice eg. /etc/login.warn)
- Banner message to display after the user successfully logged in (configure in /etc/motd)
Disable MOTD message for a specific user
We use issue.net file to display a banner message. Open the following file with VI editor.
# vi /etc/issue.net
I am adding the following banner sample message and then save the file. You can add any custom banner message to this file.
###############################################################
# Welcome to ucartz.com #
# All connections are monitored and recorded #
# Disconnect IMMEDIATELY if you are not an authorized user! #
###############################################################
Open the master ssh configuration file and enable banners.
# vi /etc/ssh/sshd_config
Search for the word “Banner” and uncomment out the line and save the file.
#Banner /some/path
It should be like this.
Banner /etc/issue.net (you can use any path you want)
Next, restart the SSH daemon to reflect new changes.
# /etc/init.d/sshd restart Stopping sshd: [ OK ] Starting sshd: [ OK ]
Now try to connect to the server. You will see a banner message as set by us.
Display SSH Warning Message to Users After Login
To disable the MOTD or the banner message, only for a specific user in CentOS/RHEL 7.
We are going to use motd file, which is used to display banner massages after login. Now open it with VI editor.
vi /etc/motd
Place the following banner sample message and save the file.
###############################################################
# Welcome to ucartz.com #
# All connections are monitored and recorded #
# Disconnect IMMEDIATELY if you are not an authorized user! #
###############################################################
done!
