Appendix E Services
Table 130 Examples of Services
NAME | PROTOCOL | PORT(S) | DESCRIPTION |
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AH | 51 | The IPSEC AH (Authentication Header) | |
(IPSEC_TUNNEL) |
|
| 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 | |
| TCP/UDP | 24032 | from 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 instance |
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| www.zyxel.com) to IP numbers. |
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|
ESP | 50 | The IPSEC ESP (Encapsulation | |
(IPSEC_TUNNEL) |
|
| Security Protocol) tunneling protocol |
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| uses this 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 |
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| if a user is logged on. |
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|
FTP | TCP | 20 | File Transfer Protocol, a program to |
| TCP | 21 | enable fast transfer of files, including |
| large files that may not be possible by | ||
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| |
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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 |
|
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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 | |
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| often used for diagnostic purposes. |
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ICQ | UDP | 4000 | This is a popular Internet chat |
|
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| program. |
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IGMP | 2 | Internet Group Multicast Protocol is | |
(MULTICAST) |
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| used when sending packets to a |
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| specific group of hosts. |
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IKE | UDP | 500 | The Internet Key Exchange algorithm |
|
|
| is used for key distribution and |
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| management. |
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IMAP4 | TCP | 143 | The Internet Message Access Protocol |
|
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| is used for |
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IMAP4S | TCP | 993 | This is a more secure version of IMAP4 |
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| that runs over SSL. |
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IRC | TCP/UDP | 6667 | This is another popular Internet chat |
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| program. |
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382 |
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