ZyXEL p-334wh Mode D'Emploi

P-334WH User’s Guide

154 

Chapter 15 Bandwidth Management

The commonly used services and port numbers are shown in the following table. Please refer 
to RFC 1700 for further information about port numbers. Next to the name of the service, two 
fields appear in brackets. The first field indicates the IP protocol type (TCP, UDP, or ICMP). 
The second field indicates the IP port number that defines the service. (Note that there may be 
more than one IP protocol type. For example, look at the DNS service. 

 means 

UDP port 53 and TCP port 53. 

MSN Webcam

MSN messenger allows you to chat online and send instant messages. If you use 

MSN messenger and also have a webcam, you can send your image/photo in real-

time along with messages

WWW

The World Wide Web (WWW) is an Internet system to distribute graphical, hyper-

linked information, based on Hyper Text Transfer Protocol (HTTP) - a client/server 

protocol for the World Wide Web. The Web is not synonymous with the Internet; 

rather, it is just one service on the Internet. Other services on the Internet include 

Internet Relay Chat and Newsgroups. The Web is accessed through use of a 

browser.

Table 61   Media Bandwidth Management Setup: Services (continued)

Table 62   Commonly Used Services

AIM/New-ICQ(TCP:5190)

AOL’s Internet Messenger service, 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(UDP/TCP:53) 

Domain Name Server, a service that matches web names (e.g. 

www.zyxel.com

) to IP numbers.

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:20.21) 

File Transfer Program, a program to enable fast transfer of files, 

including large files that may not be possible by e-mail.

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 e-commerce.

ICQ(UDP:4000)

This is a popular Internet chat program.

IKE(UDP:500)

The Internet Key Exchange algorithm is used for key distribution and 

management.

IPSEC_TUNNEL(AH:0)

The IPSEC AH (Authentication Header) tunneling protocol uses this 

service.