Nat Port Trigger; Figure 54: Nat - Port Trigger - SMC Networks SMC7904WBRAS-N2 V2 User Manual

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Port triggering is a way to automate port forwarding in which outbound
NAT P T
ORT RIGGER
traffic on predetermined ports ("triggering ports") causes inbound traffic to
specific incoming ports to be dynamically forwarded to the initiating host
while the outbound ports are in use.
Figure 54: NAT — Port Trigger
The following items are displayed on this page:
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MSN — Enables MSN passthrough. (Default: Enabled)
Port Trigger – Enables the feature. (Default: Disabled)
Application Type – Select a name from the list of common
applications, or set a custom name to describe the service.
Start/End Match Port — Specifies the trigger port range. (Range: 1-
65535)
Trigger Protocol — Specifies the trigger port type used, TCP, UDP, or
both.
Start/End Relate Port — Specifies the public port range. (Range: 1-
65535).
Open Protocol — Specifies the public port type used, TCP, UDP, or
both.
NAT Type — Specifies outgoing or incoming traffic.
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HAPTER
NAT/NAPT Settings