Allied Telesis AR450S Bedienungsanleitung PDF herunterladen (Seite 5)

How to configure the AT-AR450S Firewall using the Graphical User Interface (GUI) 5

C613-16011-00 REV A

13 February 2004

Configuring firewall interfaces

From the Configuration section of the sidebar menu, choose Firewall. You may have to

click Configuration to expand the Configuration menu.

Click Firewall, then click Interfaces. This displays the Configure Firewall screen as

shown in Figure 2. This screen has three tabs, one for configuration, one for interfaces

and one for policy options.

You use the configuration tab to select a firewall type, and to enable or disable the firewall.

Figure 2: An example of the Configure Firewall screen

Configuration tab

The first decision you need to make is whether or not you want to use a DeMilitarised

Zone (DMZ). A DMZ keeps your public servers separate from your private LAN.

Effectively, this is a choice of whether or not to create a second firewall policy, called

DMZ.

Note that by default no traffic is allowed from the Internet to the DMZ. You must

create rules to allow access to your servers.

If you choose not to use a DMZ, the configuration process is simpler as there is only one

Firewall policy presented in the configuration windows.

If you choose to have a DMZ, you do not have to configure the DMZ policy immediately.

The presence of this other policy does not affect the functionality of the primary policy at

all. This means that you can choose "Firewall configuration using a DMZ" even if you

are not using it initially, but you simply want to have the option to use the DMZ policy in

the future.

Click Apply to accept your configuration changes.

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