Tenda 4G680 - DMZ; Overview; Access the LAN with an IP address from the internet

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9.3 DMZ
9.3.1 Overview
Youcanseta certaincomputerasaDMZHosttofreethecomputerfromanyrestrictioninthe
processofaccessingtheinternet.Therefore,theDMZHostcanobtainbetterinternetexperience.
Forexample,avideomeetingandonlinegamescanbesmootheronaDMZhost.
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 WhenacomputerissetasaDMZhost,itiscompletelyexposedtotheinternet,whichmeansthat
thecomputerwillnotbeprotectedbythefirewalloftherouter.
 ADMZhostcanbeeasilyusedbyhackerstoattackthelocalnetwork.DonotsetDMZhost
randomly.
 Securitysoftware,anti‐virussoftwareandsystemfirewallmayaffecttheDMZfunction.Please
disablethesesafetymeasuresduringtheuseofDMZfunction.
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Parameter Description
DMZHost ItspecifiestheIPaddressofthedevicethatissetasaDMZhost.
9.3.2 AccesstheLANwithanIPaddressfromtheinternet
Networkrequirement
AssumethatyouhaveaFTPserverundertheLANoftherouter,andyouwanttosharethe
resourcesontheservertoallowfamily memberstoaccessthoseresourcesfromtheinternet.
Solution
YoucanmeettherequirementwiththeDMZhostfunction.
Assumethat:
 TheIPaddressoftheFTPserver:192.168.0.101.
 TheMACaddressofthehostoftheFTPserver:D4:61:DA:1B:CD:89.
 TheserviceportoftheFTPserver:21.