Casio ISA550WBUN3K9 manual Configuring DMZ, About DMZ networks

Networking	4
Configuring DMZ

Configuring DMZ

Use the Networking > DMZ page to configure a Demarcation Zone or Demilitarized Zone (DMZ). A DMZ is a sub-network that is behind the firewall but that is open to the public. By placing your public services on a DMZ, you can add an additional layer of security to the LAN. The public can connect to the services on the DMZ but cannot penetrate the LAN. You should configure your DMZ to include any hosts that must be exposed to the WAN (such as web or email servers).

About DMZ networks

This section describes how to configure the DMZ networks. The DMZ configuration is identical to the VLAN configuration. There are no restrictions on the IP address or subnet assigned to the DMZ port, except it cannot be identical to the IP address given to the predefined VLANs.

NOTE Up to 4 DMZs can be configured on the security appliance.

Cisco ISA500 Series Integrated Security Appliances Administration Guide 141