ooh ok, so you are using the bittorrent version only. FrostWire 5 is a torrent version only, whereas FrostWire 4 used both the gnutella network and torrents. It was just over a year ago FrostWire announced they were becoming a torrent only program and were leaving the gnutella network. Their older version 4 will do both torrents and gnutella network.

If you are using FW 5 you will not need the advice I gave you. But if you were using the gnutella network, you would need to access the firewall's advanced settings to ban ports.