Appendix B Common Services - ZyXEL Communications EMG6765-Q10A User Manual

The following table lists some commonly-used services and their associated protocols and port numbers.
For a comprehensive list of port numbers, ICMP type/code numbers and services, visit the IANA (Internet
Assigned Number Authority) web site.
• 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 USER-DEFINED, the Port(s) is the IP protocol number, not
the port number.
• Port(s): This value depends on the Protocol. Please refer to RFC 1700 for further information about port
numbers.
• 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 83 Commonly Used Services
NAME PROTOCOL
AH (IPSEC_TUNNEL) User-Defined
AIM/New-ICQ TCP
AUTH TCP
BGP TCP
BOOTP_CLIENT UDP
BOOTP_SERVER UDP
CU-SEEME TCP
UDP
DNS TCP/UDP
ESP (IPSEC_TUNNEL) User-Defined
FINGER TCP
FTP TCP
TCP
H.323 TCP
HTTP TCP
HTTPS TCP
Common Services
PORT(S) DESCRIPTION
51 The IPSEC AH (Authentication Header) tunneling
protocol uses this service.
5190 AOL's Internet Messenger service. It is also used as a
listening port by ICQ.
113 Authentication protocol used by some servers.
179 Border Gateway Protocol.
68 DHCP Client.
67 DHCP Server.
7648 A popular videoconferencing solution from White
Pines Software.
24032
53 Domain Name Server, a service that matches web
names (for example www.zyxel.com) to IP numbers.
50 The IPSEC ESP (Encapsulation Security Protocol)
tunneling protocol uses this service.
79 Finger is a UNIX or Internet related command that can
be used to find out if a user is logged on.
20 File Transfer Program, a program to enable fast
transfer of files, including large files that may not be
21
possible by e-mail.
1720 NetMeeting uses this protocol.
80 Hyper Text Transfer Protocol - a client/server protocol
for the world wide web.
443 HTTPS is a secured http session often used in e-
commerce.
EMG6765-Q10A User's Guide
200
A
P P E N D I X
B