Posted inNetwork
Linux Security: Implementing DoH and DoT to ‘Stay Hidden’ from ISPs
Don't let ISPs know what you're accessing. A detailed guide on encrypting DNS with DoT and DoH on Linux for total privacy protection.
Posted inNetwork
Mastering Traffic Control (tc): Bandwidth Limiting and Traffic Prioritization on Linux
Don't let a backup script crash your Web Service. Learn how to use tc (Traffic Control) to limit bandwidth, prioritize SSH/Web traffic, and optimize Linux network performance.
Posted inNetwork
Configuring VPN Clients on Linux: Battle-Tested Experience with WireGuard, OpenVPN, and IPsec
A hands-on guide to configuring WireGuard, OpenVPN, and IPsec on Linux. Learn how to troubleshoot routing, DNS, and MTU issues from a system administrator's perspective.
Posted inNetwork
Turn Linux into a Wireless Access Point: Build Your Own “Pro” Wi-Fi Router with hostapd and dnsmasq
A detailed guide to turning a Linux machine into a Wireless Access Point using hostapd and dnsmasq, with real-world troubleshooting experience for packet loss and network performance optimization.
Posted inNetwork
How to Install and Configure OpenVPN Server on Linux: Easy Secure Remote Network Access
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.
Posted inNetwork
Diagnosing and Troubleshooting Network Connectivity Issues on Linux: A Guide to `ip`, `route`, `dig`, `netcat`, and More
Network connectivity issues on Linux servers can arise unexpectedly, causing significant disruption. This article guides you through using powerful tools like `ip`, `route`, `dig`, and `netcat` to systematically diagnose and resolve problems, just as you would handle a real-world production incident.
Posted inNetwork
Professional IP Management: Efficient DHCP Server Configuration With Dnsmasq On Linux
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.
Posted inNetwork
Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux
Ever worried about system downtime? Keepalived helps solve this by creating Virtual IPs and ensuring high availability, keeping your services online.
Posted inNetwork
Setting Up a PXE Boot Server on Linux: Automated OS Installation Over the Network for Multiple Servers
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.
Posted inNetwork
Diagnosing Network Issues on Linux: Using mtr and traceroute like an Experienced Engineer
In urgent situations, when a network is "slow" for unknown reasons,
traceroute and mtr are indispensable tools for diagnosing issues. This article provides a detailed guide on using them to identify packet loss, latency, and routing problems, helping you quickly resolve Linux network issues.