Abstract
This little tool allows you to set up a
basic firewall on your machine. It will filter connection attempts
made from the outside, and block unauthorized ones. It is a good
idea to run it just after installing your machine and before
connecting to the Internet. This will minimize the risks of your
machine being cracked.
Simply un-check the Everythingbox, and then check the boxes corresponding to the services you wish to make available to the outside world. If you wish to authorize a service which is not listed here, simply click on the button to manually enter the port numbers to open.
Not checking a service in this list will not prevent you from connecting to it. It will only prevent people from the Internet connecting to your machine. If you do not plan to host any services on your machine (common case for a desktop machine) just leave all boxes unchecked.
Then, simply click on to activate the firewall and enjoy your secure Internet connection.
On the other hand, if you wish to disable the firewall and leave all services accessible from the outside, check Everything (no firewall).