IPFW PPS / Threshold

Hello ,

I have a problem with ipfw , i need to add some ip addresses to Table 2 dynamically if they exceeds the 450packets per seconds to single destination.

Our freebsd box located as this :

Router ------- FreBSD ------ Switch ------ Servers.

It is just working as WAF / IDS / IPS .

there are 2 problems

1. I do not need to block an ip address depending on bandwith , because bandwith is meaningless on firewall boxes.Most important thing is PPS . Is there any way to trace /32 sources depending on pps ?

2. If it exceeds this traffic should i add the ip to address table auto ?
 
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