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I want to drop an http request to a specific url if it is made more than 20 times in 20 minutes.

I guess it is something like following (please correct me if I'm wrong):

iptables -I INPUT -p tcp --dport 80 --match string --string "superuser.com" \
--algo kmp --match state --state NEW --match recent --update --seconds 1200 --hitcount 20 -j DROP

but I want to manage these from fwbuilder, is fwbuilder capable of creating such complex rules? If so how?

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