Appendix A Common Services - ZyXEL Communications MES3500-24F User Manual

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 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 142 Commonly Used Services
NAME
AH (IPSEC_TUNNEL)
AIM/New-ICQ
AUTH
BGP
BOOTP_CLIENT
BOOTP_SERVER
CU-SEEME
DNS
ESP (IPSEC_TUNNEL)
FINGER
FTP
H.323
MES3500-24/24F User's Guide
A
PROTOCOL PORT(S)
User-Defined 51
TCP 5190
TCP 113
TCP 179
UDP 68
UDP 67
TCP 7648
UDP 24032
TCP/UDP 53
User-Defined 50
TCP 79
TCP 20
TCP 21
TCP 1720
PP EN D I X
Common Services
DESCRIPTION
The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
AOL's Internet Messenger service. It is also
used as a listening port by ICQ.
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 (for example 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.
NetMeeting uses this protocol.
A
333