N4100 User’s Guide
329
APPENDIX E
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 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 90 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.
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