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SonicOS 5.8.1 Administrator Guide
Caution The SonicWALL DHCP Server feature must be disabled before you can enable DHCP
Support on the IP Helper. The Enable DHCP Support checkbox is greyed out until the
DHCP Server setting is disabled.
• Enable NetBIOS Support - Enables NetBIOS broadcast forwarding. NetBIOS is required
to allow Windows operating systems to browse for resources on a network.
IP Helper Policies
IP Helper Policies allow you to forward DHCP and NetBIOS broadcasts from one interface to
another interface.
Note The IP Helper is not supported for WAN interfaces or for interfaces that are configured for
NAT.
Adding an IP Helper Policy for DHCP
Step 1 Click the Add button under the IP Helper Policies table. The Add IP Helper Policy window is
displayed.
Step 2 The policy is enabled by default. To configure the policy without enabling it, clear the Enabled
check box.
Step 3 Select DHCP from the Protocol menu.
Step 4 Select a source interface or zone from the From menu.
Step 5 Select a destination Address Group or Address Object from the To menu or select Create a
new network to create a new Address Object.
Step 6 Enter an optional comment in the Comment field.
Step 7 Click OK to add the policy to the IP Helper Policies table.