What ports does BitComet use?
WARNING: Do NOT forward port 6881 or 6881-6889 from your router! They’re the default port range for the official BitTorrent client (Not BitComet!). BitComet does NOT and has not ever used those ports, so simply opening/forwarding port 6881 and/or 6881-6889 will NOT increase your BitComet speeds or make you connectable. In addition, many ISPs and trackers will block (and possibly ban) users on those ports, so even if you were using the official BitTorrent client instead of BitComet, you still shouldn’t use those ports!