SMC Networks SMC1255TX - Manual (Page 41)

S
OFTWARE
I
NSTALLATION
31
Filter Setting - MAC Address
Sets the MAC address of computers (stations) as filtering criteria.
You must enter a 12 digit MAC 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.