SMC Networks SMC1255TX - Manual (Page 42)

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NSTALLATION
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Filter Setting - IP Address
Sets the IP address of computers (stations) as filtering criteria.
Enter an IP address in the Station 1 and Station 2 fields (or enter
“any”). Click on the arrow symbols in the direction column to set
the direction of the packet flow to be captured.
Filter Setting - Protocol
Sets protocols as filtering criteria.