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SIP Operation Manual
Port filtering
Port filtering enables you to control all data that can be transmitted over routers. When the port
used at the source end is within the defined scope, it will be filtered without transmission.
Enable Port Filtering: Tick the check box to enable this function.
Port Range: Set the range of the port to be filtered. If, for example, the port to be filtered is
80 and the selected protocol is Both or TCP, all computers will be unable to use HTTP
services (port 80) and will be unable to browse normal web pages.
TCP/UDP: Choose to filter TCP, UDP, or Both.
Remark: Remark field, write comments for notations.
IP Filtering
IP Filtering is used to limit internal users from accessing the Internet.
IP: Input the IP address that you want to filter. The listed IP address will be unable to
transmit data to and from the Internet.
TCP/UDP: Choose to filter TCP, UDP, or Both.
Remark: Remark filed, write comments for notations.
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