ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
The VPN firewall will deliver the following settings to any LAN device that requests DHCP:
•An IP address from the range that you have defined.
•Subnet mask.
•Gateway IP address (the VPN firewall’s LAN IP address).
•Primary DNS server (the VPN firewall’s LAN IP address).
•WINS server (if you entered a WINS server address in the DHCP section of the LAN Setup screen).
•Lease time (date obtained and duration of lease).
DHCP Relay options allow you to make the VPN firewall a DHCP relay agent. The DHCP Relay Agent makes it possible for DHCP broadcast messages to be sent over routers that do not support forwarding of these types of messages. The DHCP Relay Agent is therefore the routing protocol that enables DHCP clients to obtain IP addresses from a DHCP server on a remote subnet, or which is not located on the local subnet. If you have no configured DHCP Relay Agent, your clients would only be able to obtain IP addresses from the DHCP server which is on the same subnet. To enable clients to obtain IP addresses from a DHCP server on a remote subnet, you have to configure the DHCP Relay Agent on the subnet that contains the remote clients, so that it can relay DHCP broadcast messages to your DHCP server.
When the DNS Proxy option is enabled, the VPN firewall will act as a proxy for all DNS requests and communicates with the ISP’s DNS servers (as configured on the Broadband ISP Settings screen). All DHCP clients will receive the primary and/or secondary DNS IP address along with the IP address where the DNS proxy is running, that is, the VPN firewall’s LAN IP address. When disabled, all DHCP clients will receive the DNS IP addresses of the ISP excluding the DNS proxy IP address.
Configuring the LAN Setup Options
The LAN Setup screen allows configuration of LAN IP services such as DHCP and allows you to configure a secondary or
Note: If you enable the DNS Relay feature, you will not use the VPN firewall as a DHCP server but rather as a DHCP relay agent for a DHCP server somewhere else on your network.
LAN Configuration |
