Advanced Setup
5.4.2
Firewall Port Filters
A Firewall filter is a rule that determines how the Firewall should handle
packets being transported on a policy between two security interfaces. You
can create separate filter rules based on:
•
The protocol type of the traffic allowed to be transported.
•
Which TCP/UDP port numbers the packets are allowed to be
transported on.
•
The name of the well-known protocol, service or application allowed to
be transported.
•
Source and destination addresses.
Whichever type of filter rule you use, you must also determine which
direction packets should be allowed to travel in:
•
In; permitted traffic is transported from the outside interface to the
inside interface.
•
Out; permitted traffic is transported from the inside interface to the
outside interface.
To manage Firewall filters, click on the link
Configure Port Filters
(in the
Firewall Configuration part of the Security page). The following window is
displayed:
The port filters currently created are displayed, and if you want to delete
any of them just click the
Delete
link.
To add a new port filter, click the
Add Filter
link. The following page is
displayed:
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