Modify INS Filters Window
This window appears when you select an interface and click Modify in
the INS Filters window. It has two tabs:
- Security, for creating or modifying filters that
cause certain packets to be dropped or forwarded
- QoS, for creating or modifying filters that give certain
packets preferential treatment
When you finish with this window, click OK. You return to the INS Filters window.
To create a security filter:
- Decide whether you want a permit filtering strategy or a deny
filtering strategy. A permit filtering strategy generally permits packets
to be forwarded at the selected interface, and drops them only in exceptional
cases. You select permit all from the Default Action list. The
filters you create are the exceptional cases that cause the selected interface
to drop packets.
A deny filtering strategy is the opposite. In most cases, you drop
packets at the selected interface, and forward them only in exceptional cases.
You select deny all from the Default Action list. The filters
you create are the exceptional cases that cause the selected interface to
forward packets.
- Click Create and use the Create Security Filter window. When you
return to this window, a the new filter appears in the Filters List.
To modify a security filter:
- From the Filters List, select the filter you want to modify.
- Click Modify and use the Modify Security Filter window.
To delete a security filter:
- From the Filters List, select the filter you want to delete.
- Click Delete to delete the filter.
To create a filter that gives preferential treatment to certain packets: