ZyXEL Communications ZyWALL 2 Plus - Manual (Page 183)

Chapter 10 Wireless LAN
ZyWALL 2 Plus User’s Guide
183
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.
DHCP Setup
DHCP DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows
individual clients (workstations) to obtain TCP/IP configuration at startup from a
server. Unless you are instructed by your ISP, leave this field set to Server. When
configured as a server, the ZyWALL provides TCP/IP configuration for the clients.
When set as a server, fill in the IP Pool Starting Address and Pool Size fields.
Select Relay to have the ZyWALL forward DHCP requests to another DHCP
server. When set to Relay, fill in the DHCP Server Address field.
Select None to stop the ZyWALL from acting as a DHCP server. When you select
None, you must have another DHCP server on your WLAN, or else the computers
must be manually configured.
IP Pool Starting
Address
This field specifies the first of the contiguous addresses in the IP address pool.
Pool Size This field specifies the size, or count of the IP address pool.
DHCP Server
Address
Type the IP address of the DHCP server to which you want the ZyWALL to relay
DHCP requests. Use dotted decimal notation. Alternatively, click the right mouse
button to copy and/or paste the IP address.
DHCP WINS
Server 1, 2
Type the IP address of the WINS (Windows Internet Naming Service) server that
you want to send to the DHCP clients. The WINS server keeps a mapping table of
the computer names on your network and the IP addresses that they are currently
using.
Windows
Networking
(NetBIOS over
TCP/IP)
NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that
enable a computer to connect to and communicate with a LAN. For some dial-up
services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls.
However it may sometimes be necessary to allow NetBIOS packets to pass
through to the WAN in order to find a computer on the WAN.
Allow between
WLAN and LAN
Select this check box to forward NetBIOS packets from the WLAN to the LAN and
from the LAN to the WLAN.
Clear this check box to block all NetBIOS packets going from the LAN to the WLAN
and from the WLAN to the LAN.
Allow between
WLAN and WAN
Select this check box to forward NetBIOS packets from the WLAN to the WAN and
from the WAN to the WLAN.
Clear this check box to block all NetBIOS packets going from the WLAN to the
WAN and from the WAN to the WLAN.
Allow between
WLAN and DMZ
Select this check box to forward NetBIOS packets from the WLAN to the DMZ and
from the DMZ to the WLAN. If your firewall is enabled with the default policy set to
block WLAN to DMZ traffic and DMZ to WLAN traffic, you also need to configure
WLAN to DMZ and DMZ to WLAN firewall rules that forward NetBIOS traffic.
Clear this check box to block all NetBIOS packets going from the WLAN to the
DMZ and from the DMZ to the WLAN.
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
Table 42 NETWORK > WLAN (continued)
LABEL DESCRIPTION