LVS Load Balancing: NAT and DR Mode Implementation

Introduction to LVS LVS (Linux Virtual Server) is an open-source project initiated by Wensong Zhang, primarily designed to achieve load balancing at the Linux kernel level. It enables the creation of a high-availability, high-performance server cluster by distributing client requests among backend servers according to load balancing algorith ...

Posted on Mon, 20 Jul 2026 17:40:42 +0000 by soulroll

Mastering KVM Virtual Networking: Bridges, NAT, and Bonded Interfaces

Virtual networking in KVM environments is foundational for enabling communication between guest VMs, the host, and external networks. This guide covers core concepts and practical implementations—including Linux bridges, NAT-based and bridged virtual networks, and resilient bonded interfaces—using modern libvirt tooling and kernel-native mechan ...

Posted on Fri, 17 Jul 2026 17:24:20 +0000 by johnsonzhang

Router Security Configuration Lab: ACLs, CHAP, DHCP, NAT, and Wireless Setup

Objectives Understand the principles and functionality of standard IP Access Control Lists (ACLs). Learn the configuration mechanisms of CHAP authentication and DHCP services on routers. Gain familiarity with basic wireless router setup in a simulated home network environment. Lab Tasks Configure a standard IP ACL to filter traffic. Implemen ...

Posted on Wed, 01 Jul 2026 16:31:21 +0000 by Crogge

Linux iptables Firewall Configuration Guide

Introduction iptables is a classic command-line utility used by Linux administrators to configure IPv4 packet filtering rules and Network Address Translation (NAT). While it may be considered legacy compared to modern firewall solutions like firewalld, it remains widely used and essential knowledge for system administrators. It's important to n ...

Posted on Sat, 20 Jun 2026 17:28:35 +0000 by Moesian