If you would like to chroot ssh user, you may installed Jailkit. It is not available on Ubuntu software repos but you can compile & build it in your own. Before we build jailkit, we install the required software building…

On internet, sometimes some unknown bots / hackers are trying to login any email / FTP servers available on Internet. Some failure login attempts are found on related log files. We can install and use fail2ban to scan these log…

Mailman is a famous mailing list system for various open source projects for many years. To install mailman on Ubuntu 16.04, we did the following steps. We install mailman with apt-get. $ apt-get install mailman And it is a must…