NetComm SmartVoice Gateway - Manual (Page 61)

SmartVoice Gateway(s) User Guide 61
YML832 Rev1
Port Filtering
Port filtering enables you to control all data that can be transmitted in routers; principles of filtering-
--When the port used at the source end is within the limited scope, it will be filtered without
transmission.
• Enable port filtering: whether to enable this function or not.
• Port Range: Set the range of port to be filtered, suppose it is 80 and when use protocol is Both or
TCP, all computers will be unable to use the services of http (port 80)— will be unable to browse
normal Web pages.
NOTE: If you filter port 80, it will also block you from web access to the gateway.
So be careful with these settings.
• TCP/UDP: Choose to either filter TCP or UDP, or choose to filter both.
• Remark:
Remark field, you can write comments by yourself.