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this filter rule to apply to.
Operator: The operator column specifies the port number settings. If
the Start Port is empty, the Start Port and the End Port column will
be ignored. The filter rule will filter out any port number.
= : If the End Port is empty, the filter rule will set the port number
to be the value of the Start Port. Otherwise, the port number
ranges between the Start Port and the End Port (including the
Start Port and the End Port).
!= : If the End Port is empty, the port number is not equal to the
value of the Start Port. Otherwise, this port number is not
between the Start Port and the End Port (including the Start
Port and End Port).
> : Specify the port number is larger than the Start Port (includes
the Start Port).
< : Specify the port number is less than the Start Port (includes
the Start Port).
Keep State: i.e. Stateful Packet Inspection. It tracks packets and
denies unsolicited incoming data. On the protocol entry, you can
choose TCP or UDP or TCP/UDP or ICMP.
Firewall Setup
6-12
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