I would advise administrators to add this activity as part of security on mission critical servers, which will help us to find the issue easily when we want to check the specific user session...
By default everyone prefer history command to review/recall the previously entered commands in terminal but unfortunately, that shows only the commands and doesn’t shows the commands output which was performed previously. There are many...
We have wrote many articles about SSH hardening. Today, we are going to explain another SSH hardening tips, how to disconnect idle or inactive ssh sessions automatically (after few minutes of inactivity). If you...
Let’s imagine that you are working in server through ssh, for some reason your session get disconnected like, internet issue or power failure or your Local PC get rebooted, etc,. You may or mayn’t...
openSSH stands for Secure Shell is an evergreen tool to connect remote Linux server securely. Security is one of the major task for Linux administrator that to two types, application & server level security....
Whenever we setup a new server, we need to enable/tweak email alerts for ssh login for security reason. So that if someone logged into server we can get a mail trigger immediately. If you...
Most of the people don’t know this option, its very useful for server administrator. You can assume the scenario : you are having 2 server’s both server having the firewall, you are trying to...
If you are server administrator you should get all the email alerts from server, what’s going on server, any software updated or any daemon failed to start, restart and who’s logged in server. In...
Everyone knows, nowadays IT industry implemented “N” number of new technologies at the same time we have faced “N” number of “Hacking” attempts. In linux server we need to enable/disable some futures to prevent...
By default ssh port number is “22”, its not a secure one. For security reason you want to change the ssh port number on server. Follow the below steps to change the ssh port...