Motorola SURFboard SBG901 - Manual (Page 47)

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6 • Advanced Pages 46
Advanced Port Filtering Page
This page allows you to define port filters to prevent all devices from sending outgoing
TCP/UDP traffic to the WAN on specific IP port numbers. By specifying a starting and
ending port range, you can determine what TCP/UDP traffic is allowed out to the WAN
on a per-port basis.
Note: The specified port ranges are blocked for ALL PCs, and this
setting is not IP address or MAC address specific. For example, if you
wanted to block all PCs on the private LAN from accessing HTTP sites
(or “web surfing”), you would set the “Start Port” to 80, “End Port” to
80, “Protocol” to TCP, checkmark Enabled, and then click Apply.
Field Descriptions for the Advanced Port Filtering Page
Field Description
Start Port Enter the starting port number.
End Port Enter the ending port number.
Protocol Select TCP, UDP, or Both from the drop-down list.
Enabled Checkmark for each port that you want to activate the IP port
filters.