Security Basics mailing list archives
Re: RE: Server blocks access of IP after nmap scan
From: amon.amarth9 () gmail com
Date: Wed, 18 May 2011 15:18:18 -0600
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. ------------------------------------------------------------------------ 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 ------------------------------------------------------------------------
Current thread:
- RE: Server blocks access of IP after nmap scan, (continued)
- RE: Server blocks access of IP after nmap scan Rishi Narang (May 18)
- Re: RE: Server blocks access of IP after nmap scan amon . amarth9 (May 18)
- Re: Server blocks access of IP after nmap scan Joseph Saselli (May 18)
- Re: Server blocks access of IP after nmap scan Luciano Mazzella (May 18)
- Re: RE: Server blocks access of IP after nmap scan phyco . rootelement (May 18)
- Re: RE: Server blocks access of IP after nmap scan TAS (May 18)
- Re: Server blocks access of IP after nmap scan amon . amarth9 (May 18)
- Re: Server blocks access of IP after nmap scan Littlefield, Tyler (May 18)
- Re: Server blocks access of IP after nmap scan Matthew Caron (May 18)
- RE: Server blocks access of IP after nmap scan Michael Sturtz (May 18)
- Re: Server blocks access of IP after nmap scan Littlefield, Tyler (May 18)
- Re: RE: Server blocks access of IP after nmap scan amon . amarth9 (May 18)
- Re: Server blocks access of IP after nmap scan Todd Haverkos (May 20)