ZyXEL Communications Prestige 662HW Series, User Manual

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Prestige 662HW Series User’s Guide
Firewall Configuration 12-15
Custom ports show up with an “*” before their names in the
Services list box and the Rule Summary list box. Click Apply after
you’ve created your custom port.
On completing the configuration procedure for this Internet firewall rule, the Rule Summary screen
should look like the following.
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 12-12 Firewall Example: Rule Summary: My Service
12.10 Predefined Services
The Available Services list box in the Edit Rule screen (see Figure 12-5 ) 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 12-6 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.