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ZyXEL NBG-318S Manual

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NBG318S User’s Guide
287
APPENDIX F
Services
The following table lists some commonly-used services and their associated protocols and port
numbers.
• 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.
• 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 118 Examples of Services
NAME PROTOCOL PORT(S) DESCRIPTION
AH
(IPSEC_TUNNEL)
User-Defined 51 The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
AIM TCP 5190 AOL’s Internet Messenger service.
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
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 (e.g.
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.
… 287 …


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