E-mail Alert on Root SSH Login
Want to be notified instantly when someone logs into your server as root? No problem, check out this nice tutorial on email notification for root logins. Keeping track of who logs into your server and when is very important, especially when you’re dealing with the super user account. We recommend that you use an email address not hosted on the server your sending the alert from.
So lets get started!
1. Login to your server and su to root, I know the irony!
2. cd /root
3. pico .bashrc
4. Scroll to the end of the file then add the following:
echo ‘ALERT – Root Shell Access (YourserverName) on:’ `date` `who` | mail -s “Alert: Root Access from `who | cut -d’(‘ -f2 | cut -d’)’ -f1`” firstname.lastname@example.org
Replace YourServerName with the handle for your actual server
Replace email@example.com with your actual email address
5. Crtl + X then Y
Now logout of SSH, close the connection and log back in! You should receive an email address of the root login alert a few minutes afterwards.
Note: This is a great tool for servers that have multiple admins or if you give someone SSH access for whatever reason, although you should give out the root password to as few people as humanly possible and be sure to change it often.
This will not magically alert you when a hacker runs the latest kernel exploit on your server and logs into SSH because they will create their own SSH/telnet connection. You should keep your system up to date, install a firewall and follow the latest security releases.
Similar Articles : Compile 2.6.7, 2.6.8, 184.108.40.206, 2.6.9, 2.6.10, 220.127.116.11 Kernel w/module-init-tools, Rkhunter Installation,Detect and Clean a hacked server T0rnkit Tutorial, How to install KISS Firewall, How to Disable Telnet, How to install mod_security for Apache, How to install BFD (Brute Force Detection), How to install APF (Advanced Policy Firewall), E-mail Alert on Root SSH Login, Mask Your Web Server for Enhanced Security, Guide to Chkrootkit – checking for intruders,Creating a Welcome message for SSH logins, Disable Direct Root Login, RootCheck – Root Check, Changing APF log for TDP/UDP drop’s