Nope, he does not mean open a port. Ports is the name of the packaging system FreeBSD uses, and a port is the equivalent (more or less) of an RPM or deb source package.
If your server had a network connection problem and you needed to open up a port, we're already talking about network ports, not software, so you would try to diagnose your network.
If you asked me how you could get the old game `rogue` on your system, I would tell you to go install the freebsd-games port, which has nothing to do with networking, and so it clearly means that you need to look in your ports tree.
