7. Cisco FTD Prefilter Policy

Cisco FTD Prefilter Policy is the first level of access control and gives the capability to allow or filter a specific traffic at L3/L4 without the need to be forwarded to CPU intensive access control policy. It is also known as “fastpath” because it quickly allows or denies traffic, without deep packet inspection.
For example, you might want to allow ICMP for troubleshooting purposes and also drop Telnet traffic for security reasons. They do not need to be inspected by CPU-intensive engines like access-control policy, IPS policy, file policy and so on.
full content in:
https://rayka-co.com/lesson/cisco-ftd-prefilter-policy/

Видео 7. Cisco FTD Prefilter Policy канала RAYKA