RE: nmap root vs user question

[Jeff Fears <jfears () apusolutions com>]

Because non-root cannot read port unreachable errors in ICMP.

http://nmap.org/nmap_doc.html


-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Robert Larsen
Sent: Monday, October 07, 2013 7:31 AM
To: ToddAndMargo; security-basics () securityfocus com
Subject: Re: nmap root vs user question

Not sure, but maybe nmap tries ping probes if it is allowed to.
ICMP requires raw sockets which require root or CAP_NET_RAW capability.

So my guess is that when you run as root, you start out with a ping, which indicates the host to be down.
Try 'nmap -P0  -p T:5020,5900 192.168.202.210' as root.

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------------------------------------------------------------------------
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
------------------------------------------------------------------------