D-Link DSL 2740B - Manual (Page 63)

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Open Protocol Opened protocol for remote users
DMZ
Since some applications are not compatible with NAT, the Router supports use of a DMZ IP address for a single host on
the LAN. This IP address is not protected by NAT and will therefore be visible to agents on the Internet with the right
type of software. Keep in mind that any client PC in the DMZ will be exposed to various types of security risks. If you
use the DMZ, take measures (such as client-based virus protection) to protect the remaining client PCs on your LAN
from possible contamination through the DMZ.
DMZ Window