Dmz Host - D-Link DSL-2740B User Manual

Section 7 - Advanced Setup

DMZ Host

The demilitarized military zone (DMZ) host feature allows one
local network device to be exposed to the Internet. This function
is applicable for:
• Users who want to use a special-purpose Internet service, such
as an on-line game or video conferencing program, that is not in
the port forwarding list and for which no port range information
is available.
• Users who are not concerned with security and wish to expose
one computer to all services without restriction.
Note: A DMZ host is not protected by the firewall and may be vulnerable
to attack. This may also put other computers in the home network at
risk. Hence, when designating a DMZ host, you must consider the
security implications and take the appropriate precautions.
You can set up a client in your local network as a DMZ host. Your
device then forwards all incoming data traffic from the Internet to this client. You can, for example, operate your own Web server on one of the
clients in your local network and make it accessible to Internet users. As the exposed host, the local client is directly visible to the Internet and
therefore particularly vulnerable to attacks (for example, hacker attacks). Enable this function only when necessary (for example, to operate a
Web server) and when other functions (for example, port forwarding) are inadequate. In this case, you should take appropriate measures for the
clients concerned.
Note: Only one PC per public IP address can be setup as an exposed host.
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