SMC Networks Barricade SMC7404BRA EU - Manual (Page 51)

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ONFIGURING THE
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ARRICADE
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NAT
Some applications require multiple connections, such as Internet gaming,
videoconferencing, Internet telephony, and others. These applications may
not work when Network Address Translation (NAT) is enabled. If you
need to run applications that require multiple connections, use these pages
to specify the additional public ports to be opened for each application.