Appendix G Common Services
Table 161 Commonly Used Services (continued)
NAME | PROTOCOL | PORT(S) | DESCRIPTION |
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 Program, 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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| |
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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/server protocol for the world |
|
|
| wide web. |
|
|
|
|
HTTPS | TCP | 443 | HTTPS is a secured http session often |
|
|
| used in |
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|
ICMP | 1 | Internet Control Message Protocol is | |
|
|
| often used for diagnostic or routing |
|
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| purposes. |
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|
ICQ | UDP | 4000 | This is a popular Internet chat |
|
|
| program. |
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|
IGMP | 2 | Internet Group Management Protocol | |
(MULTICAST) |
|
| is used when sending packets to a |
|
|
| 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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|
IRC | TCP/UDP | 6667 | This is another popular Internet chat |
|
|
| program. |
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|
MSN Messenger | TCP | 1863 | Microsoft Networks’ messenger |
|
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| service uses this protocol. |
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|
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 |
|
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| network environments. |
|
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|
NNTP | TCP | 119 | Network News Transport Protocol is |
|
|
| the delivery mechanism for the |
|
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| USENET newsgroup service. |
|
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|
PING | 1 | Packet INternet Groper is a protocol | |
|
|
| that sends out ICMP echo requests to |
|
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| test whether or not a remote host is |
|
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| reachable. |
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|
POP3 | TCP | 110 | Post Office Protocol version 3 lets a |
|
|
| client computer get |
|
|
| POP3 server through a temporary |
|
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| connection (TCP/IP or other). |
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494 |
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