SMC Networks Barricade Plus SMC7004FW, Руководство пользователя

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C
ONFIGURING THE
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ARRICADE
P
LUS
4-29
Intrusion Detection
The Intrusion Detection feature of the Barricade Plus limits the access of
the incoming traffic from the WAN port. When the SPI feature is turned
on, all the incoming packets will be blocked unless certain types of traffic
types are checked by the users. When the user checkes certain types of
traffic, only the particular type of traffic initiated from the Internal LAN
will be allowed. For example, if the user only checks “FTP service” from
the Stateful Packet Inspection page, all the incoming traffic will be blocked
except the FTP connection initiated from the local LAN.