ZyXEL Communications Internet Security Gateway ZyWALL 2 Series - Manual (Page 78)

ZyWALL 2 Series User’s Guide
5-6 LAN
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-2B and RIP-2M sends the routing data in RIP-2 format; the difference being
that RIP-2B uses subnet broadcasting while RIP-2M uses 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-1 or IGMP V-2 or 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
and WAN Select this check box to forward NetBIOS packets from the LAN to the WAN and
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.
5.7 Configuring 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.