Asus RX3041 - Manual (Page 51)

RX3041 Router User's Manual
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ALG (Application Layer Gateway): You can choose to
enable ALG, then the router will let that application correctly
pass though the NAT gateway.
3.6.5 DMZ (Demilitarized Zone)
If you have a client PC that cannot run Internet application
properly from behind the NAT firewall or after configuring the
Special Applications function, then you can open the client
up to unrestricted two-way Internet access.
Enter the IP address of a DMZ host to this screen. Adding
a client to the DMZ (Demilitarized Zone) may expose your
local network to a variety of security risks, so you can only