Appendix D Common Services
Table 238 Commonly Used Services
NAME | PROTOCOL | PORT(S) | DESCRIPTION |
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AH | 51 | The IPSEC AH (Authentication Header) | |
(IPSEC_TUNNEL) |
|
| tunneling protocol uses this service. |
TCP | 5190 | AOL’s Internet Messenger service. It is also | |
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|
| used as a listening port by ICQ. |
AUTH | TCP | 113 | Authentication protocol used by some |
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| servers. |
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 |
|
|
| matches web names (e.g. www.zyxel.com) |
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|
| to IP numbers. |
ESP | 50 | The IPSEC ESP (Encapsulation Security | |
(IPSEC_TUNNEL) |
|
| Protocol) tunneling protocol uses this |
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|
| service. |
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. |
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 |
H.323 | TCP | 1720 | NetMeeting uses this protocol. |
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|
HTTP | TCP | 80 | Hyper Text Transfer Protocol - a client/ |
|
|
| server protocol for the world wide web. |
HTTPS | TCP | 443 | HTTPS is a secured http session often used |
|
|
| in |
ICMP | 1 | Internet Control Message Protocol is often | |
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|
| used for diagnostic or routing purposes. |
ICQ | UDP | 4000 | This is a popular Internet chat program. |
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|
IGMP (MULTICAST) | 2 | Internet Group Multicast Protocol is used | |
|
|
| when sending packets to a specific group of |
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|
| hosts. |
IKE | UDP | 500 | The Internet Key Exchange algorithm is |
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|
| used for key distribution and management. |
IRC | TCP/UDP | 6667 | This is another popular Internet chat |
|
|
| program. |
MSN Messenger | TCP | 1863 | Microsoft Networks’ messenger service |
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| uses this protocol. |
TCP | 5190 | An Internet chat program. | |
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NEWS | TCP | 144 | A protocol for news groups. |
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NFS | UDP | 2049 | Network File System - NFS is a client/ |
|
|
| server distributed file service that provides |
|
|
| transparent file sharing for network |
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| environments. |
654 |
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ZyWALL 2 Plus User’s Guide |
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