Gateway Configuration Screen Definitions
SURFboard® SBG6700-AC Wireless Cable Modem Gateway • User Guide
Port Filtering
Port filtering 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 computers, and this setting is not IP address or MAC
address specific. For example, if you wanted to block all computers on your home network from accessing
HTTP sites (or web surfing), you would create the following port filter and then click Apply when done:
• Set Start Port to 80
• Set End Port to 80
• Set Protocol to TCP
• Select Enabled
Figure 52 – Advanced Port Filtering Screen
Table 14: Advanced Port Filtering -Field Descriptions
The starting port number of the Port Filtering range.
The ending port number of the Port Filtering range.
Select
,
, or
from the drop-down list.
Select to activate or deselect to deactivate the selected
IP port triggers.
