Packet Filter

Packet filtering allows you to control access to network regardless of what program initiates the connection. These rules are applied to all network packets transmitted through a network interface of your computer.

Thus, packet filtering provides you with more general mechanisms to control access to network than the application level filtering.

Firewall uses the following predefined rule sets:

•Default Rule—this rule set is used by default for new network interfaces.

•Allow All—this rule set configures the component to pass through all packets.

•Block All—this rule set configures the component to block all packets.

For fast switching between filtering modes, you can create custom sets of filtering rules.

To set rule sets for network interfaces

In the Firewall settings window,click Change working parameters for the known networks, choose a network interface and click . On this page you can:

•Configure sets of filtering rules by adding new rules, modifying existing ones or deleting them.

•Configure additional filtering settings.

To configure rule sets

Do one of the following:

•To add a new set of rules for the network interface, click ;

•To edit an existing set of rules, select the rule set in the list and click .

•To add a copy of an existing set of rules, select the rule set and click. The copy is added after the selected rule set.

•To delete the selected rule set, click.

To configure additional settings

In the Packet filter settings window, you can select the following options: