Appendix D Common Services
Table 271 Commonly Used Services (continued)
NAME | PROTOCOL | PORT(S) | DESCRIPTION |
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. |
|
|
|
|
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 | |
|
|
| used for diagnostic or routing purposes. |
ICQ | UDP | 4000 | This is a popular Internet chat program. |
|
|
|
|
IGMP (MULTICAST) | 2 | Internet Group Multicast Protocol is used | |
|
|
| when sending packets to a specific group of |
|
|
| hosts. |
IKE | UDP | 500 | The Internet Key Exchange algorithm is |
|
|
| 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 |
|
|
| uses this protocol. |
TCP | 5190 | An Internet chat program. | |
|
|
|
|
NEWS | TCP | 144 | A protocol for news groups. |
|
|
|
|
NFS | UDP | 2049 | Network File System - NFS is a client/ |
|
|
| server distributed file service that provides |
|
|
| transparent file sharing for network |
|
|
| environments. |
NNTP | TCP | 119 | Network News Transport Protocol is the |
|
|
| delivery mechanism for the USENET |
|
|
| newsgroup service. |
PING | 1 | Packet INternet Groper is a protocol that | |
|
|
| sends out ICMP echo requests to test |
|
|
| whether or not a remote host is reachable. |
POP3 | TCP | 110 | Post Office Protocol version 3 lets a client |
|
|
| computer get |
|
|
| through a temporary connection (TCP/IP or |
|
|
| other). |
PPTP | TCP | 1723 | |
|
|
| secure transfer of data over public |
|
|
| networks. This is the control channel. |
PPTP_TUNNEL | 47 | PPTP | |
(GRE) |
|
| enables secure transfer of data over public |
|
|
| networks. This is the data channel. |
RCMD | TCP | 512 | Remote Command Service. |
|
|
|
|
REAL_AUDIO | TCP | 7070 | A streaming audio service that enables real |
|
|
| time sound over the web. |
REXEC | TCP | 514 | Remote Execution Daemon. |
|
|
|
|
RLOGIN | TCP | 513 | Remote Login. |
|
|
|
|
738 |
| |
ZyWALL 2WG User’s Guide |
| |
|
|
|