Linux FAQ resource and tutorials

This blog features Linux FAQs, hands-on tips and detailed tutorials on Linux software, Linux networking, security, virtualization and cloud computing.

How to create a site-to-site IPsec VPN tunnel using Openswan in Linux

A virtual private network (VPN) tunnel is used to securely interconnect two physically separate networks through a tunnel over the Internet. Tunneling is needed when the separate networks are private LAN subnets with globally non-routable private IP addresses, which are not reachable to each other via traditional routing over the Internet. For example, VPN tunnels […]
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What are useful CLI tools for Linux system admins

System administrators (sysadmins) are responsible for day-to-day operations of production systems and services. One of the critical roles of sysadmins is to ensure that operational services are available round the clock. For that, they have to carefully plan backup policies, disaster management strategies, scheduled maintenance, security audits, etc. Like every other discipline, sysadmins have their […]
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