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Using PortShield Interfaces

Configuring PortShield Interfaces

Note When you create a PortShield interface in Static Mode, verify the IP address you assign to the

interface is not already in use by another PortShield interface.

Working in Transparent Mode

Transparent Mode addressing allows for the WAN subnetwork to be shared by the current interface using

Address Object assignments. The interface’s IP address is the same as the WAN interface IP address.

Transparent mode is available on interfaces assigned to Trusted and Public Zones.

Note Verify the IP address you assign to the PortShield interface is within the WAN subnetwork.

When you create a PortShield interface in Transparent Mode, you create a range of addresses to be

applied to the PortShield interface. You include these addresses in one entity called an Address Object.

Address Objects allow for entities to be defined one time and to be re-used in multiple referential

instances throughout the SonicOS interface. When you create a PortShield interface using an address

object, all ports mapped to the interface are identified by any of the addresses specified in the address

range. This approach is appropriate when adding multiple addresses because it saves time and reduces

the potential for address conflicts.

Note Each statically addressed PortShield interface must be on a unique subnetwork. You cannot overlap

PortShield interfaces across multiple subnetworks.

Creating a PortShield Interface from the Interfaces Area

Before creating and adding a PortShield interface, think about why you are creating it and what role it

will play in your network. To create and add a PortShield interface to the list of interfaces, perform the

following steps:

1. Click on the Interfaces option. The management software displays the Interfaces Settings screen.

2. Note the interfaces in the list contain the following columns of information:

Column Description

Name A string that identifies the interface.

Zone The zone to which the interface maps.

IP Address The IP address assigned to the interface.

Subnet Mask The subnetwork mask value assigned to the IP address to indicate a range of

addresses.

IP Assignment The method in which the interface obtains its IP address:

Static. Manually creating an explicit address to which you will map ports.

Transparent. Allows for the WAN subnetwork to be shared by the current interface

using Address Object assignments. The interface’s IP address will be the same as

the WAN interface IP address. Transparent mode is available on interfaces assigned

to Trusted and Public Zones.

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