I Want To Block All Traffic To And From My Computer Except For Those Ports I Want Open?

What software firewall can do this?
for example i only want to allow port 80 and 445?
something like kerio firewall? alternatives?
Also can you buy a hardware firewall that is configureable using a browser?
thanks

Hi, I Want To Block All Lan Traffic And All P2p Software Such As Msn?

i can’t do this at the moment as i don’t know how to, i have it set on a schedule to block all websites (i added the keyword www.) but i can’t do this for msn, as when i add msn, it keeps running (as it is p2p software)- i do not want to have [...]