Configuring Windows XP Firewall, Support

This guide will show how to configure the Microsoft Windows Firewall to allow inbound access to your computer from the Internet.
No-IP - Free Dynamic DNS - Managed DNS - Managed Email - Domain Registration

Upgrade Windows XP Professional from another operating system

Firewall Port Exceptions

How to configure the Windows Firewall in Windows XP

Firewall settings (For Network users)

How To Turn on the Windows Firewall – Instructions for XP, Vista, Win 7 and 8 « TipTopSecurity

How to Install Windows XP

virtual machine - How to setup Internet on Windows XP Hyper-V VM? - Super User

Installing Windows XP

I can ping a Windows XP PC with the firewall off but I can't when the firewall is on. Why? - Super User

OpenVPN: Building and Integrating Virtual Private Networks

How to Set Up Internet Connection Sharing for Windows XP

Windows XP - Firewall Configuration on a Shared Internet Connection

Windows XP – OpenDNS

How to configure Microsoft Windows XP firewall Service pack 2