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Security Management – System Filter Exeption
Sysfilter exeption -
System Filter Exception – It will reject every packet with unrecognized
port to avoid port scan program from hackers but this also incurs problems on situation that
some servers (e.g. SMTP server port 113) or client from WAN need to response packet to
justify aliveness of their communication peers.
•
Enable
– If check box is marked, it will enable System Filter Exception
•
Interface
– You can select LAN, any WAN port or ALL interfaces which a packet
comes from.
•
Protocol
– The packet type which will be directly processed from above interface
by this device.
•
Foreign Port Range
– Enter the beginning and end of the foreign port range used
by the traffic you wish to configure. If only a single port is used, enter the port
number in both fields.
•
Device Port Range
– Enter the beginning and end of the device port range used by
the traffic you wish to configure. If only a single port is used, enter the port number
in both fields.
System Filter Exception Rules List -
The list will display the details of all System Filter
Exception Rule data that you have setup. You can modify it by mouse-clicking each row.