--- In [email protected], Brad Campbell <[EMAIL PROTECTED]> wrote:
>
> sangbsy wrote:
> 
> > Hi Brad,
> > 
> > Is it possible to Drop dissimilar packets continuously coming 
from a 
> > particular IP or connection to the firewall ?; In a situations 
like 
> > somebody tries port scans etc.
> > 
> 
> There are some bits of software out there that set up logging hooks 
into your firewall (via the -j 
> LOG) target and scanning the syslog that then place defensive 
firewall rules in place if they detect 
> you are being scanned or ddos'd. How paranoid are you? Frankly I 
think they are more trouble than 
> they are worth.
> 
> You can do a quick and dirty by rate limiting your connection to 1 
per xx seconds wiht a burst, and 
> anything over that gets dropped on the floor. That may be useful if 
you are on a fast connection.
> 
> Anything for home use, it's not worth the effort except it may 
confuse the port scanner. Frankly 
> when I want to scan someone I use syn scans and never more than 1 
per 30 secs.. Not likely to raise 
> a peep on a firewall alarm.
> 
> Brad
> -- 
> "Human beings, who are almost unique in having the ability
> to learn from the experience of others, are also remarkable
> for their apparent disinclination to do so." -- Douglas Adams
>

Thanks Brad .


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