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SonicOS 5.8.1 Administrator Guide
Adding an IP Helper Policy for NetBIOS
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 NetBIOS from the Protocol menu.
Step 4 Select a source Address Group or Address Object from the From menu. Select Create a new
network to create a new Address Object.
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.
Editing an IP Helper Policy
Click the Edit icon in the Configure column of the IP Helper Policies table to display the
Edit IP Helper window, which includes the same settings as the Add IP Helper Policy window.
Deleting IP Helper Policies
Click the Delete icon to delete the individual IP Helper policy entry. Click the Delete button
to delete all the selected IP Helper policies in the IP Helper Policies table.
Enhanced IP Helper
IP Helper extends the previous version’s Forwarding Plane to support User-defined protocols
and extended policies. As a result, IP Helper’s UI has been completely redesigned. IP Helper
also offers better control on existing NetBIOS/DHCP relay applications.
Some of the built-in applications that have been extended include:
• DHCP—UDP port number 67/68
• Net-Bios NS—UDP port number 137
• Net-Bios Datagram—UDP port number 138
• DNS—UDP port number 53
• Time Service—UDP port number 37
• Wake on LAN (WOL)
• mDNS—UDP port number 5353; multicast address 224.0.0.251
Each protocol has the following configur
able options:
• Name—The name of the protocols. Note that these are case sensitive and must be unique.
• Port 1/2—The unique UDP port number.
• Translate IP—Translation of the source IP while forwarding a packet.
• Timeout—IP Helper cache timeout in seconds at an increment of 10.