ZyXEL Communications ES-2048, User Manual

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ES-2048 User’s Guide
285
A
P P E N D I X
B
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 121 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.