Port Filtering - Technicolor TC7200.20 User Manual

4. Port Filtering

This page allows you to enter ranges of destination ports (applications) that you don't want your LAN PCs
to send packets to. Any packets your LAN PCs send to these destination ports will be blocked. For example,
you could block access to worldwide web browsing (http = port 80) but still allow email service (SMTP port
25 and POP-3 port 110). To enable port filtering, set Start Port and End Port for each range, and click Apply.
To block only one port, set both Start and End ports with the same value.
Fig.2-21 Gateway\Advanced\Port Filtering
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