Rate limit for packets?

[blackmetal]

Hi,
i want know how can i put rate limit for packets?
for example put rate limit for UDP port 53 and accept 200 pps per second on port 53 and if exceed more than 200 pps queue it ?
can someone tell me how can i crate rule like this or something closer to this rule?
thanks,

[KOM]

Firewall rules only allow or deny access.  They don't do any rate limiting.  For that you need either a limiter or a traffic shaper with a queue who's upper limit is set to your spec.  Once that is defined, then you can use floating rules to direct whatever traffic you want into that limiter or queue.