Tuesday, February 19, 2019

How to install and use pi-hole on Linux – A black hole for...

In this guide, we will cover the installation and usage of pi-hole on Ubuntu 18.04 / Ubuntu 16.04 / Debian and CentOS 7 system. pi-hole is a DNS sinkhole for Internet advertisements which...
Firewalld on RHEL7

Install and use Firewalld on Ubuntu 18.04 / Ubuntu 16.04

Firewalld is Linux firewall management tool with support for IPv4, IPv6, Ethernet bridges and IPSet firewall settings. It acts as a front-end to Linux kernel's netfilter framework. Firewalld is a default...
ssh

How to change or update SSH key Passphrase on Linux / Unix

Let's look at how you can update or change your SSH key Passphrase on a Linux system. SSH keys are often used to authenticate users to some kind of information systems....

How to Install OSSEC HIDS on Ubuntu 18.04 / 16.04 / Debian 9

This guide will help you to  Install OSSEC HIDS on Ubuntu 18.04 / 16.04 / Debian 9. OSSEC is an open source host-based intrusion detection system (HIDS) that runs on Linux, OpenBSD, Solaris,...

How to Setup IPSec VPN server with L2TP and Cisco IPsec on Ubuntu /...

Have you been struggling to set up your own IPsec VPN server in just a few minutes, with both IPsec/L2TP and Cisco IPsec on CentOS, Ubuntu and Debian Linux flavor?. I'll...

How to create locally trusted SSL Certificates on Linux and macOS with mkcert

Are you tired of using non-trusted SSL certificates on your Local development projects?. I know to maintain your own Certificate Authority(CA) is a pain in the neck, with arcane...

How to Install and Configure Tripwire on Ubuntu 18.04

In this blog post, we'll look at the how to install and configure Tripwire on Ubuntu 18.04. Tripwire is an open source host-based Intrusion Detection System. Tripwire can check for file...

How to enforce strong user password policy in Ubuntu / Debian

By default, Linux is not secure and more configurations are required for a new server installation to ensure it is hardened and secure from the bad guys. If users...

How to use nmcli to connect to OpenVPN Server on Linux

OpenVPN Server is a full-featured secure network tunneling VPN software. In this blog post, we will cover the steps to use nmcli to connect to OpenVPN Server on Linux. OpenVPN Server has Client...

Algo VPN – Setup a personal IPSEC VPN in the Cloud

What is Algo VPN? According to their Github Page, "Algo VPN is a set of Ansible scripts that simplify the setup of a personal IPSEC and...
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