ZyXEL Communications NBG-417N, User Manual, Page: 262 / 279

User
’
s Guide
263
A
P P E N D I X
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 84 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.
C
om
pan
y
C
on
fiden
tial