ZyWALL 2 and ZyWALL 2WE

 

Table 16-2 Predefined Services

 

 

SERVICE

DESCRIPTION

 

 

BOOTP_CLIENT(UDP:68)

DHCP Client.

 

 

BOOTP_SERVER(UDP:67)

DHCP Server.

 

 

CU-

A popular videoconferencing solution from White Pines Software.

SEEME(TCP/UDP:7648,

 

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.

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)

NetMeeting uses this protocol.

 

 

HTTP(TCP:80)

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

 

web.

HTTPS(TCP:443)

HTTPS is a secured http session often used in e-commerce.

 

 

ICQ(UDP:4000)

This is a popular Internet chat program.

 

 

IKE(UDP:500)

The Internet Key Exchange algorithm is used for key distribution and

 

management.

IPSEC_TUNNEL(AH:0)

The IPSEC AH (Authentication Header) tunneling protocol uses this

 

service.

 

 

IPSEC_TUNNEL(ESP:0)

The IPSEC ESP (Encapsulation Security Protocol) tunneling protocol uses

 

this service.

 

 

IRC(TCP/UDP:6667)

This is another popular Internet chat program.

 

 

MSN

Microsoft Networks’ messenger service uses this protocol.

Messenger(TCP:1863)

 

 

 

MULTICAST(IGMP:0)

Internet Group Multicast Protocol is used when sending packets to a

 

specific group of hosts.

 

 

NEW-ICQ(TCP:5190)

An Internet chat program.

 

 

NEWS(TCP:144)

A protocol for news groups.

 

 

16-8

Creating Custom Rules