ZyXEL VoIP Router Prestige 2602R-61 91-006-024004 Manual Do Utilizador

Prestige 2602R Series User’s Guide

Chapter 13 Firewall Configuration

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Figure 67   Firewall Example: Rule Summary: My Service 

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)”. 

 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 47    Predefined Services 

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_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.

HTTP(TCP:80) 

Hyper Text Transfer Protocol - a client/server protocol for the world 

wide web.