Motorola Netopia 3397GP - Manual (Page 46)

Administrator’s Handbook
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If you chose Por t For warding, the Por t Range entr y screen appears.
Por t For warding for wards a range of WAN por ts to an IP address on the LAN. Enter the following infor-
mation:
◆
Service Name: A unique identifier for the Custom Service.
◆
Global Port Range: Range of ports on which incoming traffic will be received.
◆ Base Host Port: The port number at the start of the port range your Gateway should use when for-
warding traffic of the specified type(s) to the internal IP address.
◆
Protocol: Protocol type of Internet traffic, TCP or UDP.
Click the Next button.
If you chose Trigger Por ts, the Trigger Por ts entr y screen appears.
Trigger Por ts for wards a range of por ts to an IP address on the LAN only after specific outbound traffic
“triggers” the feature. Enter the following information:
◆ Service Name: A unique identifier for the Custom Service.
◆ Global Port Range: Range of ports on which incoming traffic will be received.
◆
Local Trigger Port: Port number of the type of outbound traffic that needs to happen (will be the
trigger) to then allow the configured por ts for inbound traffic.
Example: Set the trigger port to 21 and configure a range of 25 – 110. You would need to do an out-
bound ftp before you were able to do an inbound smtp.
Click the Next button.
Static NAT
This feature allows you to: