ZyXEL Communications GS2220 Series User Manual

GS2220 Series User’s Guide
528
A PPENDIX B
Co mm o n Se rvic e s
The following table lists some commonly-used services and their associated protocols and port numbers.
For a comprehensive list of port numbers, ICMP type or code numbers and services, visit the IANA
(Internet Assigned Number Authority) web site.
• Na me : This is a short, descriptive name for the service. You can use this one or create a different one,
if you like.
• Pro to c o l: 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 Use r- De fine d, the Po rt(s) is the IP protocol number, not
the port number.
• Po rt(s): This value depends on the Pro to c o l. Please refer to RFC 1700 for further information about port
numbers.
•If the Proto c o l is TC P, UDP, or TCP/ UDP, this is the IP port number.
•If the Proto c o l is USER, this is the IP protocol number.
• De sc riptio n: This is a brief explanation of the applications that use this service or the situations in which
this service is used.
Table 278 Commonly Used Services
NAME PRO TO CO L PO RT(S) DESC RIPTIO N
AH (IPSEC_TUNNEL) User-Defined 51 The IPSEC AH (Authentication Header) tunneling
protocol uses this service.
AIM/New-ICQ TCP 5190 AOL’s Internet Messenger service. It is also used
as a listening port by ICQ.
AUTH TCP 113 Authentication protocol used by some servers.
BGP TCP 179 Border Gateway Protocol.
BOOTP_CLIENT UDP 68 DHCP Client.
BOOTP_SERVER UDP 67 DHCP Server.
CU-SEEME TCP
UDP
7648
24032
A popular videoconferencing solution from
White Pines Software.
DNS TCP/UDP 53 Domain Name Server, a service that matches
web names (for example
www.zyxel.com) to IP
numbers.
ESP (IPSEC_TUNNEL) User-Defined 50 The IPSEC ESP (Encapsulation Security Protocol)
tunneling protocol uses this service.
FINGER TCP 79 Finger is a UNIX or Internet related command
that can be used to find out if a user is logged
on.
FTP TCP
TCP
20
21
File Transfer Program, a program to enable fast
transfer of files, including large files that may not
be possible by email.
H.323 TCP 1720 NetMeeting uses this protocol.
HTTP TCP 80 Hyper Text Transfer Protocol – a client or server
protocol for the world wide web.

ZyXEL Communications GS2220 Series Specifications

General

Brand	ZyXEL Communications
Model	GS2220 Series
Category	Switch
Language	English