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ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
3-4 LAN Configuration
v1.1, August 2010
• IP Subnet Mask. The subnet mask specifies the network number portion of an IP address.
Your VPN firewall will automatically calculate the subnet mask based on the IP address
that you assign. Unless you are implementing subnetting, use 255.255.255.0 as the subnet
mask. (Always make sure that the LAN port IP address and DMZ port IP address are in
different subnets.)
3. In the DHCP section, select Disable DHCP Server, Enable DHCP Server, or DHCP Relay.
By default, the VPN firewall will function as a DHCP server, providing TCP/IP configuration
settings for all computers connected to the VPN firewall’s LAN. If another device on your
network will be the DHCP server, or if you will manually configure all devices, click Disable
DHCP Server. If the VPN firewall will function as a DHCP relay agent, select DHCP Relay
and enter the IP address of the DHCP relay gateway in the Relay Gateway field.
If the DHCP server is enabled, enter the following settings:
• Domain Name. (Optional) The DHCP will assign the entered domain to DHCP clients.
• Starting IP Address. Specifies the first of the contiguous addresses in the IP address pool.
Any new DHCP client joining the LAN will be assigned an IP address between this
address and the Ending IP Address. The IP address 192.168.1.2 is the default start address.
• Ending IP Address. Specifies the last of the contiguous addresses in the IP address pool.
The IP address 192.168.1.100 is the default ending address.
• Primary DNS Server. (Optional) If an IP address is specified, the VPN firewall will
provide this address as the primary DNS server IP address. If no address is specified, the
VPN firewall will provide its own LAN IP address as the primary DNS server IP address.
• Secondary DNS Server. (Optional) If an IP address is specified, the VPN firewall will
provide this address as the secondary DNS server IP address.
• WINS Server. (Optional) Specifies the IP address of a local Windows NetBIOS Server if
one is present in your network.
• Lease Time. This specifies the duration for which IP addresses will be leased to clients.
Note: The starting and ending DHCP addresses should be in the same subnet as
the LAN IP address of the VPN firewall (the IP address that is configured
in the LAN TCP/IP Setup section of the LAN Setup screen).