Re: RE: Server blocks access of IP after nmap scan

[amon.amarth9 () gmail com]

Nice explained. Anyway, the problem is that although this can be effective defense structure, when not configured 
properly it can block legitimate users too. In this specific case, not only scanning request or aggressive port probe, 
but a simple ICMP packet or any kind of connection to any port other than 80 (and thanks to my research, now 21 too) 
will put your ip address on the black list and every packet you send since then will be dropped. It's irrational to 
block legitimate services for a specific user only because he/she pinged the server and it's not as effective security 
protection as it seems like, because after all i got the results from the port scan using some tweaks on nmap. Security 
is much more than that.

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