Re: Server blocks access of IP after nmap scan

["Luciano Mazzella" <lmazzella () gmail com>]

May want to try an idle scan:

#nmap -Pn -p- -sI target-ip

-p- optional as it scans all 65K ports


/lgm


------Original Message------
From: amon.amarth9 () gmail com
Sender: listbounce () securityfocus com
To: security-basics () securityfocus com
Subject: Server blocks access of IP after nmap scan
Sent: May 18, 2011 12:37

I am conducting this little security test on a specific web server owned by a colleague of mine, saying it's pretty 
secured. So first I ran nmap but after the nmap scan completes (and it says all ports filtered, which is impossible), 
the web server became unresponsive. I called my friend in order to explain him how accidentally I DoSed his server but 
he says it's all ok. I check again - it's not responding. So I connect through a proxy and whoa - it's alive, so i 
guess after the nmap scan the server somehow protected itself by blocking access to the site for my ip. I would like to 
know what I can do in this case, how I can successfully complete a nmap scan without putting it 'down'. Any ideas 
please?

------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are 
highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
------------------------------------------------------------------------



Sent from my Verizon Wireless BlackBerry