Let’s Encrypt with Nginx on Ubuntu 16.04 Server
Let’s Encrypt is a free and open certificate authority which provides free SSL certificate services to everyone. Their SSL certificates are suitable for web service and email service. Certbot is a tool developed by EFF, it enable HTTPS on your…
Install Jailkit on Ubuntu
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…
Install Fail2ban on Ubuntu
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…
Installing Mailman on Ubuntu
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…