Askey RAC2V1K, Руководство пользователя

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Port triggering will work even without setting up a specific LAN IP address.
Unlike port forwarding, which requires a static LAN IP address, port triggering
allows dynamic port forwarding using the router. Predetermined port ranges are
configured to accept incoming connections for a limited period of time. Port
triggering allows multiple computers to run applications that would normally
require manually forwarding the same ports to each PC on the network.
Port triggering is more secure than port forwarding since the incoming ports are
not open all the time. They are opened only when an application is making an
outgoing connection through the trigger port.
2.4.1.1 . 6 DMZ
Virtual DMZ module exposes one client to the Internet, allowing this client to receive
all inbound packets directed to a Local Area Network. Inbound traffic from the
Internet is usually discarded and routed to a specific client only if port forwarding or a
port trigger has been configured on the network. In a DMZ configuration, one
network client receives all inbound packets.
Setting up DMZ on a network is useful when you need incoming ports open or you
want to host a domain, web, or e-mail server.
CAUTION: Opening all of the client’s ports to Internet makes the network vulnerable
to outside attacks. Please be aware of the security risks involved in using DMZ.