ZyXEL Communications Corporation NBG6816 Manuel D’Utilisation

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ARMOR Z1 User’s Guide
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P P E N D I X
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Common Services
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 TCPUDP, 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 61   
Commonly Used Services
NAME
PROTOCOL
PORT(S)
DESCRIPTION
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 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.