security
How to Monitor and Detect Modified Files using Tripwire IDS on Ubuntu 16.04
Tripwire is a free and open source Intrusion Detection System (IDS). It’s a security tool for monitoring and alerting file changes on the system. Tripwire…
Install Let’s Encrypt and Secure Nginx with SSL/TLS in Debian 9
This tutorial will show you how to install and secure a Nginx web server on Debian 9 with a TLS certificate issued for free by the…
How to scan for viruses with ClamAV on Ubuntu
ClamAV There aren’t many viruses made for Linux distributions and as such, most people who use such systems don’t even bother using an antivirus software….
How to Setup Automatic Security Updates on CentOS 7
Security updates, as most of you’d agree, are very important. On Linux, it’s always advisable to keep the installed packages up to date, especially when…
How to Clone an Encrypted Disk Image with Clonezilla
Clonezilla is an Open Source disk/partition imaging tool based mainly on partclone utility. The Clonezilla image is a tool that can be very useful in case…
L2TP over IPsec using OpenSwan with Freeradius authentication on Ubuntu 16.04
This article is about the layer 2 tunneling protocol (L2TP) with IPsec to provide end-to-end encryption in the layer 2 VPN because security features are…
L2TP over IPsec using OpenSwan with Freeradius authentication on Ubuntu 16.04
This article is about the layer 2 tunneling protocol (L2TP) with IPsec to provide end-to-end encryption in the layer 2 VPN because security features are…
Securing X2Go On Ubuntu Precise With WiKID Two-Factor Authentication
In this document we are going to demonstrate how to implement two-factor authentication from WiKID for remote desktop on an Ubuntu 12.04 server using X2Go….
How to configure PureFTPd and FileZilla to use TLS sessions on CentOS 7.2
This article explains how to configure PureFTPd to accept TLS sessions on a CentOS 7.2 server. Plain FTP is an insecure protocol because all passwords and…
Server monitoring with Munin and Monit on CentOS 7.2
In this article, I will describe how you can monitor your CentOS 7 server with Munin and Monit. Munin produces nifty little graphics about nearly…