GRC offers to test and report the Vulernability of your system to the Internet for free. They scan for access to your system and report there findings while you're online. This is especially useful for DIAL-UP and Laptop users to test their firewall settings. Areas tested include Service Ports common ports browser headers internet access to file shares! messenger spam user defined port probes you can get a free security scan here IMO, you need this before you take your laptop to any hotspot! Fast, easy and effective!