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Setting up Mesh VPN with Tailscale on Linux: Remote Server Access and CGNAT Bypass Without Port Forwarding

By admin April 25, 2026

Forget the worries of port forwarding or CGNAT. A detailed guide on installing Tailscale on Linux to create a secure Mesh VPN for remote server access anywhere.

Network

Mastering the socat Command on Linux: Port Forwarding, Relays, and SSL Tunnels in Practice

By admin April 18, 2026

socat is a powerful Linux command-line tool for port forwarding, TCP/UDP relays, and SSL tunnels — all with a single command. This guide walks through real-world scenarios from basic port forwarding and multi-hop relays to wrapping plain TCP services with SSL.

Network

Saving Linux Server Wi-Fi via CLI: Mastering nmcli and wpa_supplicant

By admin April 13, 2026

Lost Ethernet on a Linux Server? A detailed guide on using nmcli and wpa_supplicant to configure Wi-Fi via CLI, plus practical tips for handling routing and metric issues.

Network

How to Install and Configure OpenVPN Server on Linux: Easy Secure Remote Network Access

By admin March 29, 2026

This article provides a detailed guide on how to install and configure an OpenVPN Server on Linux to create a secure VPN connection. You'll learn about different VPN solutions, why OpenVPN is chosen, and how to deploy it step-by-step easily using an automated script.

Network

Professional IP Management: Efficient DHCP Server Configuration With Dnsmasq On Linux

By admin March 24, 2026

Configuring a DHCP server with Dnsmasq on Linux is an important network administration skill. This article provides detailed instructions from installation to advanced configuration tips, helping you proactively manage IPs, optimize performance, and avoid network conflicts.

Network

Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux

By admin March 23, 2026

Ever worried about system downtime? Keepalived helps solve this by creating Virtual IPs and ensuring high availability, keeping your services online.

Network

Setting Up a PXE Boot Server on Linux: Automated OS Installation Over the Network for Multiple Servers

By admin March 23, 2026

A hands-on guide to deploying a PXE Boot Server on Linux with dnsmasq, TFTP, and NFS for automated OS installation across multiple servers over the network. Covers detailed configuration, boot menus, BIOS/UEFI differences, and a quick health check script for the full stack.

Network

Basic Network Knowledge for SysAdmins: IP, Subnet, Gateway – Indispensable Foundations

By admin March 12, 2026

This article delves into three foundational concepts of computer networking: IP Address, Subnet Mask, and Gateway. You'll understand how they work, why they're crucial for SysAdmins, and how to configure them on Linux, along with practical experiences from a SysAdmin managing office and datacenter networks.

Network

Measuring Network Speed and Performance with iperf3 on Linux Server

By admin March 6, 2026

A guide to using iperf3 to measure real-world bandwidth between two Linux servers, detect packet loss and jitter with UDP mode, and write time-based monitoring scripts to catch intermittent issues. Includes comparisons with speedtest-cli and netperf to help you pick the right tool for each scenario.

Network

Configuring IPv6 on Linux Servers: Static Addresses, Dual-Stack, and Real-World ip6tables

By admin March 2, 2026

Step-by-step guide to configuring IPv6 on Linux servers: enabling IPv6, assigning static addresses on Ubuntu/Debian and CentOS/Rocky, setting up dual-stack, ip6tables firewall, and troubleshooting real-world issues.