Mirror Port - Moxa Technologies EtherDevice User Manual

Mirror Port

The Mirror port function can be used to monitor data being transmitted through a specific
port. This is done by setting up another port (the mirror port) to receive the same data
being transmitted to, from, or both to and from, the port under observation. This allows the
network administrator to "sniff" the observed port and thus keep tabs on network activity.
Take the following steps to set up the Mirror Port function:
STEP 1
Configure MOXA EtherDevice Server's Mirror Port function from either the Console
utility or Web Browser interface. You will need to configure three settings:
Monitored Port
Mirror Port
Watch Direction
Select the port number of the port whose network activity will be
monitored.
Select the port number of the port that will be used to monitor the
activity of the monitored port.
Select one of the following three watch direction options:
Input data stream
Select this option to monitor only those data packets coming into
MOXA EtherDevice Server's port from an external connection.
Output data stream
Select this option to monitor only those data packets being sent
out through MOXA EtherDevice Server's port.
Bi-directional
Select this option to monitor data packets both coming into, and
being sent out through, MOXA EtherDevice Server's port.
MOXA EtherDevice Server User's Manual 6-31
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Console
Mirror port
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