ZyWALL 2 Series User’s Guide

 

Table 5-1 IP

 

 

LABEL

DESCRIPTION

 

 

RIP Version

The RIP Version field controls the format and the broadcasting method of the RIP

 

packets that the ZyWALL sends (it recognizes both formats when receiving). RIP-1

 

is universally supported but RIP-2 carries more information. RIP-1 is probably

 

adequate for most networks, unless you have an unusual network topology. Both

 

RIP-2Band RIP-2Msends the routing data in RIP-2 format; the difference being

 

that RIP-2Buses subnet broadcasting while RIP-2Muses multicasting. Multicasting

 

can reduce the load on non-router machines since they generally do not listen to

 

the RIP multicast address and so will not receive the RIP packets. However, if one

 

router uses multicasting, then all routers on your network must use multicasting,

 

also. By default, RIP direction is set to Both and the Version set to RIP-1.

Multicast

Select IGMP V-1or IGMP V-2or None. IGMP (Internet Group Multicast Protocol) is

 

a network-layer protocol used to establish membership in a Multicast group - it is

 

not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over

 

version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to

 

read more detailed information about interoperability between IGMP version 2 and

 

version 1, please see sections 4 and 5 of RFC 2236.

 

 

Windows Networking (NetBIOS over TCP/IP)

 

 

Allow between LAN

Select this check box to forward NetBIOS packets from the LAN to the WAN and

and WAN

from the WAN to the LAN. If your firewall is enabled with the default policy set to

 

block WAN to LAN traffic, you also need to enable the default WAN to LAN firewall

 

rule that forwards NetBIOS traffic.

 

Clear this check box to block all NetBIOS packets going from the LAN to the WAN

 

and from the WAN to the LAN.

 

 

Apply

Click Apply to save your changes back to the ZyWALL.

 

 

Reset

Click Reset to begin configuring this screen afresh.

 

 

5.7Configuring Static DHCP

This table allows you to assign IP addresses on the LAN to specific individual computers based on their MAC Addresses.

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02.

To change your ZyWALL’s Static DHCP settings, click LAN, then the Static DHCP tab. The screen appears as shown.

5-6

LAN