Keep track of ports with this handy reference

When figuring out which ports to keep open or closed in your firewall, it helps to have a list of the ports used by various kinds of software. Here's a handy reference tool you can use to find ports: www.iana.org/assignments/port-numbers. Simply search the page for the number of the port or the application. When configuring your firewall, you may also want to check protocol numbers at the following site: www.iana.org/assignments/protocol-numbers