Using the Port Filtering Option
Ubee Interactive
46
Ubee DDW3611 Wireless Cable Modem Gateway Subscriber User Guide • November 2012
For example, to prevent all Telnet access into and across your LAN, you would enter the
Start
and
End
ports to be 23, select Both for
Protocol
, and click the
Enabled
selection
box.
Be careful using port filtering by port range as you may accidentally prevent traffic that
should pass through your network (for example, http or email). To see what applications
use each port, refer to
Using the Forwarding Option on page 47
and click the
Port Map
button.
Steps
To configure port filters:
1. Click
Gateway
from the main menu.
2. Click
Port Filtering
from the left side menu. Field descriptions are listed below the
screen example.
Label Description
Start Port
Defines the starting port number
End Port
Defines the ending port number.
Protocol
Selects the protocol type. Options are UDP, TCP, or BOTH.
Enabled
Activates the rule and filters out all traffic on the specified
ports.
Apply
Saves all screen changes when clicked.
