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5. TCP/IP Port List for Internet Service
The list of TCP/IP Port for Internet service is as following table. Please note that the list is
just for your reference. You may check the service provider’s manual to see more details.
Service Name TCP UDP Notes
AOL 5190-5193 5190-5193 American OnLine
AOL ICQ 5190, dyn >=1024 Message
AOL Instant Messenger 5190 5190 American OnLine
Citrix ICA 1494, dyn >=1023 1604, dyn
>=1023
Remote application
access
DirectX Gaming 47624, 2300-2400 47624,
2300-2400
many network games
Distributed.Net RC5/DES 2064 Distributed computation
DNS 53 Domain name Service
Doom 666 666 Network game
FTP 21 File Transfer Protocol
Glimpseserver 2001 Search engine
Gopher 70
H.323 Host Call 1720 1720 H.323 host call
HTTPs 443 Secure HTTP (SSL)
ichat client, server 4020 4020 Chat rooms
ICU II 2000-2003 Videoconferencing
iSpQ 2000-2003 Videoconference
LDAP 389 389 Lightweight Directory
Access Protocol
Mirabilis ICQ dyn >=1024 4000 Locator, chat
MS ICCP 1731 1731 Audio call control
(Microsoft)
MS Netmeeting dyn >=1024, dyn >=1024 Video conference
MS NetShow 1755 1755 Streaming video
MSN Gaming Zone 28800-29000 28800-29000 Network Game
MSN Messenger 1863 Instant messenging
Netscape Conference 6498, 6502 2327 Audio conference
NNTPs 563 Secure NNTP news
(SSL)