I believe dropping is also preferable if you need more performance and  
bandwidth capacity although I'm not sure sending RST cost CPU time on  
ASA platform.

On Apr 4, 2008, at 7:18 PM, <[EMAIL PROTECTED]> <[EMAIL PROTECTED] 
 > wrote:
>> I'd tend to think that it's less about portscans and more
>> about preventing
>> someone using you to perform a bounced RST flood. Just my 0x2.
>
> That's a good argument, but you can use your regular rate limiters
> (which are in place for icmp for example) and anomaly detection for
> that. Or whatever antispoofing you might have in place

--
Yaroslav Doroshenko




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