Appendix G Services; Table 134 Examples Of Services - ZyXEL Communications P-335U User Manual

The following table lists some commonly-used services and their associated protocols and port
numbers.
• 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.
• Description: This is a brief explanation of the applications that use this service or the
situations in which this service is used.

Table 134 Examples of Services

NAME
AH
(IPSEC_TUNNEL)
AIM
AUTH
BGP
BOOTP_CLIENT
BOOTP_SERVER
CU-SEEME
DNS
ESP
(IPSEC_TUNNEL)
FINGER
FTP
H.323

Appendix G Services

A
• 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.
PROTOCOL PORT(S)
User-Defined
TCP
TCP
TCP
UDP
UDP
TCP/UDP
TCP/UDP
TCP/UDP
User-Defined
TCP
TCP
TCP
TCP
P-334U/P-335U User's Guide
P P E N D I X
DESCRIPTION
51 The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
5190 AOL's Internet Messenger service.
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 (e.g. 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
21
may not be possible by e-mail.
1720 NetMeeting uses this protocol.
G
Services
309