E
Services
The following table lists some
•Name: This is a short, descriptive name for the service. You can use this one or create a different one, if you like.
•Protocol: This is the type of IP protocol used by the service. If this is TCP/UDP, then the service uses the same port number with TCP and UDP. If this is
•Port(s): This value depends on the Protocol.
•If the Protocol is TCP, UDP, or TCP/UDP, this is the IP port number.
•If the Protocol is USER, this is the IP protocol number.
•Description: This is a brief explanation of the applications that use this service or the situations in which this service is used.
Table 84 Examples of Services
NAME | PROTOCOL | PORT(S) | DESCRIPTION |
AH (IPSEC_TUNNEL) | 51 | The IPSEC AH (Authentication Header) | |
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| tunneling protocol uses this service. |
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AIM | TCP | 5190 | AOL’s Internet Messenger service. |
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AUTH | TCP | 113 | Authentication protocol used by some |
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| servers. |
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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/UDP | 7648 | A popular videoconferencing solution from | |
| TCP/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 (e.g. www.zyxel.com) |
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| 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 enable |
| TCP | 21 | 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 client/ |
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| server protocol for the world wide web. |
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| 243 |
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