10 predefined services, Table 52 predefined services – ZyXEL Communications ADSL VoIP IAD with 802.11g Wireless 2602HW Series User Manual
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Prestige 2602HW Series User’s Guide
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Chapter 14 Firewall Configuration
Figure 76 Firewall Example: Rule Summary: My Service
14.10 Predefined Services
The Available Services list box in the Edit Rule screen (see
displays all predefined services that the Prestige already supports. Next to the name of the
service, two fields appear in brackets. The first field indicates the IP protocol type (TCP, UDP,
or ICMP). The second field indicates the IP port number that defines the service. (Note that
there may be more than one IP protocol type. For example, look at the default configuration
labeled “(DNS)”.
(UDP/TCP:53)
means UDP port 53 and TCP port 53. Up to 128 entries are
supported. Custom service ports may also be configured using the Customized Services
function discussed previously.
Table 52 Predefined Services
SERVICE
DESCRIPTION
AIM/NEW_ICQ(TCP:5190)
AOL’s Internet Messenger service, 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(UDP/TCP:53)
Domain Name Server, a service that matches web names (e.g.
www.zyxel.com
) to IP numbers.
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:20.21)
File Transfer Program, a program to enable fast transfer of files,
including large files that may not be possible by e-mail.
H.323(TCP:1720)
Net Meeting uses this protocol.