iptables - Rex Bytes

Series

WireGuard VPN

In this compelling guide to VPN networking basics, you'll discover the essential concepts that empower your online privacy. Learn about IP addresses, the crucial differences between public and private networks, subnet masks, and CIDR notation. Embrace the power of effective routing and understand the significance of ports and DNS within VPN configurations. Equip yourself with the knowledge needed to navigate upcoming VPN tutorials seamlessly!

New part: Feb 10, 2026Start Series →

Projects

RexBytes Software: Bumper VPN Kill Switch Package

I've put together a python package to automate the iptables firewall commands we've covered. It's available NOW on pypi.org

Oct 11, 2022

Posts

VPN Kill Switch With Docker

You might have set up some great rules in your iptables to act as a kill switch, only to find out that on installing Docker and running some containers they completely override your rules. Fortunately the fix is easy. Let me show you how. 1. Required Reading I’m going to apply the fix to my...

Oct 4, 2022

OpenVPN: Create A Linux VPN iptables Killswitch

If your VPN connection drops your machine usually continues to connect to the internet leaking information. Let me show you how to make an iptables killswitch.

Oct 3, 2022

Secure Your Linux Laptop With iptables

Your linux powered laptop is open and vulnerable. Let's harden it a little with the linux iptables firewall. It's not that hard, honest... it is just a text file.

Sep 23, 2022