Zte ZXDSL-531B, Руководство пользователя

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Chapter 5: Web Configuration
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To have a user define firewall setting, please select Advanced (User Define) firewall and click Apply. There are two
selections for packet filtering rules appeared to ask you choosing one. Please choose the one you want and click
Configure.
You have to select the interface from one of the radio buttons and click Configure. Later, in the next page, a button
named Create a new filtering rule will appear. Click on this button to get into next page.
Example
Here provides you the way and the result of creating a new filtering rule. This is just an example and just for your
reference.
If you want enable the firewall and access into PPTP server for some reason, you can:
Set the protocol type as TCP and set the port range value start point as 1723, or
Set the protocol type as User Defined and set the number as 47.
After you click the Create a new filtering rule button, the following screen will appear. Please fill in the boxes and
click Apply to close this screen.