A chronological documentation test project, nothing serious, really!
I’ve installed rkhunter, a rootkit checking script, on a Ubuntu 7.10 (Gutsy Gibbons) distro and today it mailed a message saying that 3 files had their properties changed. The files were /usr/bin/chattr, /usr/bin/lsattr and /usr/bin/perlBefore doing anything I tried to update rkhunter to see if there had been any updates to fix this message rkhunter –update […]
This is an alternative way of limiting the SSH access to only SFTP explained in my How to restrict users to SFTP only instead of SSH post.Edit your /etc/sshd_config file and change your settings like thisMatch User usernameAllowTcpForwarding noX11Forwarding noForceCommand /usr/libexec/sftp-server -l INFO Replace username with the user name you would limit the SSH access […]
What is Port Knocking? Port knocking is a method by which you can dynamically open ports on your server to a single IP address. Port knocking allows you to transparently run a service on your server without exposing the services of that port to all IP addresses. In practice, it is very similar to having […]
This is a simple test to check if your antivirus software is up and running Create a text file Insert the following text into the file X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H* Save the file with the filename eicar.com Your antivirus software should detect this file as a virus and notify you about that. Your antivirus software is not working […]
Shell script to monitor running services such as web/http, ssh, mail etc. If service fails script will send an Email to ADMIN user monitor-linux-service.bash #!/bin/bash # Shell script to monitor running services such as web/http, ssh, mail etc. # If service fails it will send an Email to ADMIN user # ————————————————————————- # Copyright (c) […]