Test your home firewall with free Internet Vulnerability Penetration Testing Tool

Check your personal firewall for leaks for free.

Head on over to GRC's Shields Up! and click proceed button.

https://www.grc.com/x/ne.dll?bh0bkyd2

Run each test indicated by the red arrows. 

Messenger Spam link is applicable for Windows XP or less, Windows 2000 or less , Windows Server 2003 or less.