ZyAIR G-2000 Plus User’s Guide

Figure 89 My Service Example Rule Summary

Rule 1: Allows a My Service connection from the WAN to IP addresses 10.0.0.10 through

10.0.0.15on the LAN.

15.8Predefined Services

The Available Services list box in the Edit Rule screen ( Figure 83 ) displays all predefined services that the ZyAIR 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. Custom services may also be configured using the Custom Services function discussed previously.

Table 64 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,

A popular videoconferencing solution from White Pines Software.

24032)

 

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.

Chapter 15 Firewall Screens

206