Network : Network > IP Helper

Configuring Relay Protocols
IP Helper supports user-defined protocols and extended policies. IP Helper provides better control on existing NetBIOS/DHCP relay applications. Some of the built-in applications that have been extended include:
Each protocol has the following configurable 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.
Raw Mode—Unidirectional forwarding that does not create an IP Helper cache. This is suitable for most of the user-defined protocols that are used for discovery, for example WOL/mDNS.
Adding User-Defined Relay Protocols
Click the Add button on the lower left side of the Relay Protocols table. The Add IP Helper Application window displays.
To add a protocol, configure the following options:
Enable Application—Enable the IP Helper application. If disabled, all IP Helper cache will be deleted.
Name—Create a unique case-sensitive name.
Port 1/2—Specify unique UDP port numbers.
Timeout—This is optional. Specify the IP Helper cache timeout, in seconds, at an increment of 10 from 10 to 60. If not specified, a default value of 30 seconds is selected. This field is ignored if Raw Mode is selected.
IP Translation—When selected, the firewall translates the source IP of an IP-Helper forwarded packet.
Raw Mode—When selected, IP Helper does not create a cache; Unidirectional forwarding is supported. The Timeout field is ignored.
Deleting Custom Protocols
A custom protocol can be deleted by selecting the Delete icon for that protocol. You can also select the left-most checkbox of the desired protocol, then click the Delete button, located on the lower left side of the table.
Retrieving Counters
When you hover the cursor over a protocol or policy’s Statistics icon, a pop-up window displays the traffic status for that protocol.