Edimax BR-6476AC, User Manual

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To IP address
Enter the IP address of the PC where you
want to set the applications. Here in this
example, enter 192.168.1.100.
Protocol
Select the protocol (TCP/UDP/Both) for the
application.
Enable
Enable the connection
Disable
Disable the connection
If your WAN IP address is 192.168.1.100 when accessing your FTP
server from external network, your friends only need to enter
ftp:// 192.168.1.100:21 in their browsers.
III-5-3. DMZ
A Demilitarized Zone (DMZ) is an isolated area in your local network where
private IP addresses are mapped to specify internet IP addresses, allowing
unrestricted access to the private IP addresses but not to the wider local
network.
You can define a virtual DMZ host here. This is useful for example, if a
network client PC cannot run an application properly from behind an NAT
firewall, since it opens the client up to unrestricted two-way access.