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BGP | TCP | 179 | Border Gateway Protocol. |
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BOOTP_CLIENT | UDP | 68 | DHCP Client. |
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BOOTP_SERVER | UDP | 67 | DHCP Server. |
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TCP | 7648 | A popular videoconferencing solution from | |
| UDP | 24032 | White Pines Software. |
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DNS | TCP/UDP | 53 | Domain Name Server, a service that |
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| matches web names (for example |
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| http://us.zyxel.com) to IP numbers. |
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ESP | 50 | The IPSEC ESP (Encapsulation Security | |
(IPSEC_TUNNEL) |
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| Protocol) tunneling protocol uses this |
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| service. |
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FINGER | TCP | 79 | Finger is a UNIX or Internet related |
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| command that can be used to find out if a |
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| user is logged on. |
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FTP | TCP | 20 | File Transfer Program, a program to |
| TCP | 21 | enable fast transfer of files, including large |
| files that may not be possible by | ||
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H.323 | TCP | 1720 | NetMeeting uses this protocol. |
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HTTP | TCP | 80 | Hyper Text Transfer Protocol - a |
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| client/server protocol for the world wide |
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| web. |
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HTTPS | TCP | 443 | HTTPS is a secured http session often |
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| used in |
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ICMP | 1 | Internet Control Message Protocol is often | |
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| used for diagnostic or routing purposes. |
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ICQ | UDP | 4000 | This is a popular Internet chat program. |
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