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Prestige 2602HW Series User’s Guide
178 Chapter 14 Firewall Configuration
Rule 2 allows a “My Service” connection from the WAN to IP addresses 10.0.0.10 through
10.0.0.15 on the LAN.
Figure 76 Firewall Example: Rule Summary: My Service
14.10 Predefined Services
The Available Services list box in the Edit Rule screen (see the Configuring Firewall Rules
section) 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 51 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.