Appendix I Services; Table 108 Examples Of Services - ZyXEL Communications ZyXEL NBG334SH User Manual

A
P P E N D I X
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.
• 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 108 Examples of Services

NAME
AH
(IPSEC_TUNNEL)
AIM
AUTH
BGP
BOOTP_CLIENT
BOOTP_SERVER
CU-SEEME
DNS
ESP
(IPSEC_TUNNEL)
FINGER
FTP
ZyXEL NBG-334SH User's Guide
PROTOCOL PORT(S)
User-Defined 51
TCP 5190
TCP 113
TCP 179
UDP 68
UDP 67
TCP/UDP 7648
TCP/UDP 24032
TCP/UDP 53
User-Defined 50
TCP 79
TCP 20
TCP 21
Services
DESCRIPTION
The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
AOL's Internet Messenger service.
Authentication protocol used by some
servers.
Border Gateway Protocol.
DHCP Client.
DHCP Server.
A popular videoconferencing solution from
White Pines Software.
Domain Name Server, a service that
matches web names (e.g. www.zyxel.com)
to IP numbers.
The IPSEC ESP (Encapsulation Security
Protocol) tunneling protocol uses this
service.
Finger is a UNIX or Internet related
command that can be used to find out if a
user is logged on.
File Transfer Program, a program to enable
fast transfer of files, including large files that
may not be possible by e-mail.
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