NetBay journal

Linux Networking

14 practical Linux Networking articles from Netbay Engineering — written for operators running Linux and Windows VPS in India.

14 articles in this topic

Enable IPv6 correctly on your Linux VPS with dual-stack addressing, default routes, and firewall rules for both protocol families.

Understand DHCP client behavior on Linux servers, why addresses change unexpectedly, and when static config is the safer choice.

Understand how Linux resolves hostnames through systemd-resolved, resolv.conf, and the hosts file, and fix DNS problems.

Tune MTU and TCP stack parameters through net.core and net.ipv4 sysctl knobs to improve throughput and reduce latency on Linux.

Use ss to inspect sockets and connections and ethtool to read NIC statistics for diagnosing Linux server networking problems.

Use ping, traceroute, and mtr to diagnose network latency and packet loss on a Linux VPS, and interpret the results correctly.

Capture and analyze network traffic with tcpdump to debug slow connections, DNS issues, and firewall problems like a detective.

Understand the transition from iptables to nftables and write clean, maintainable firewall rules for your Linux VPS.

Set up WireGuard on a Linux VPS with a focus on the underlying networking: peers, keys, routing, and MTU considerations.

Create 802.1Q VLAN interfaces on Linux with ip link and use them with bridges for isolated virtual network segments.

Create and manage network bridges on Linux for virtualization, containers, and transparent network segment linking.

Understand the Linux kernel routing table, learn to read ip route output, and add custom static routes for multi-homed servers.