I'm looking for a firewall program that actually works while I'm surfing on other peoples computers. I come across a lot of unsecured rigs that are full of viruses and people hacking them all the time. The firewall that comes with windows is okay but a determined hacker will just march right through it. I'd like to have a way to atleast protect myself from outside attacks while I'm on there. Maybe you could even give an option to leave a copy on the computer I am currently using.