networking

This article lists 3 of the best Linux network tools used for network troubleshooting , including netstat for analyze network connections, ip for viewing and manipulating network objects and dig for query and analyze DNS with example code snippets.

A practical guide to understanding and using iptables in Linux. In this blog post, we explore what a firewall is and how iptables can be used to set up, maintain, and inspect the tables of IP packet filter rules within the Linux kernel, and setup iptables-persistent to persist ephemeral firewall rules. It also provides a step-by-step guide on how to block incoming http connections to a webserver and then unblock it using iptables commands.