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9.6 DMZ host
9.6.1 Overview
A DMZ host on a LAN is free from restrictions when communicating with the internet. It is useful
for getting better and smoother experience in video conferences and online games. You can also
set the host of a server within the LAN as a DMZ host when in need of accessing the server from
the internet.
⚫
A DMZ host is not protected by the firewall of the router. A hacker may leverage the DMZ host to
attack your LAN. Therefore, enable the DMZ function only when necessary.
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Hackers may leverage the DMZ host to attack the local network. Do not use the DMZ host function
randomly.
⚫
Security software, antivirus software, and the built-in OS firewall of the computer may cause DMZ
function failures. Disable them when using the DMZ function. If the DMZ function is not required,
you are recommended to disable it and enable your firewall, security, and antivirus software.
To access the configuration page, log in to the web UI of the router, and choose Advanced > DMZ
Host.
This function is disabled by default. When it is enabled, the page is shown as below.
Parameter description
9.6.2 Enable internet users to access LAN resources using an IP
address
Scenario: You have set up an FTP server within your LAN.
Goal: Open the FTP server to internet users and enable family members who are not at home to
access the resources of the FTP server from the internet.
Solution: You can configure the DMZ host function to reach the goal.
Assume that the information of the FTP server includes:
− IP address: 192.168.0.136
− MAC address: D4:61:DA:1B:CD:89
− Service port: 21
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