ZyXEL Communications Corporation EMG2881-T20A Manuel D’Utilisation
EMG2881-T20A User’s Guide
148
A
PPENDIX
C
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.
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 TCP, UDP, or TCP/UDP, this is the IP port number.
• If the Protocol is USER, this is the IP protocol 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 47 Commonly Used Services
NAME
PROTOCOL
PORT(S)
DESCRIPTION
AH (IPSEC_TUNNEL)
User-Defined
51
The IPSEC AH (Authentication Header) tunneling
protocol uses this service.
protocol uses this service.
AIM/New-ICQ
TCP
5190
AOL’s Internet Messenger service. It is also used as a
listening port by ICQ.
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.
Pines Software.
DNS
TCP/UDP
53
Domain Name Server, a service that matches web
names (for example
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.
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.
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.
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.
for the world wide web.
HTTPS
TCP
443
HTTPS is a secured http session often used in e-
commerce.
commerce.