Re: nmap -sP -PE -R -v behaves differently with root/un-root

[Martin T <m4rtntns () gmail com>]

John,
I would use "--packet-trace" or tcpdump in order to get a better
understanding which probes nmap does. In addition, please pay
attention that most of the domain names you specified resolved to
multiple IP addresses.


regards,
martin

2011/8/5 John Hunter <johnny.h.hunter () gmail com>:
> I was running the command
>
> nmap -sP -PE -R -v microsoft.com ebay.com yahoo.com \
> > google.com slashdot.org
>
> it behaves differently when I was a root user and a non-root user.
> ironically that when I was a non-root, the result is more accurate.
>
> when I was a non-root:
>
> john@virtual-evolution:~$ nmap -sP -PE -R -v microsoft.com ebay.com yahoo.com \
> > google.com slashdot.org
>
> ....
> Host 207.46.232.182 is up (0.014s latency).
> Host pages.ebay.com (66.211.160.87) is up (0.086s latency).
> Host ir1.fp.vip.ac4.yahoo.com (67.195.160.76) is up (0.016s latency).
> Host vw-in-f147.1e100.net (74.125.113.147) is up (0.028s latency).
> Host slashdot.org (216.34.181.45) is up (0.038s latency).
> Nmap done: 5 IP addresses (5 hosts up) scanned in 13.36 seconds
>
>
> when i was a root:
>
> root@virtual-evolution:~# nmap -sP -PE -R -v microsoft.com ebay.com
> yahoo.com google.com slashdot.org
>
> ....
>
> Host 207.46.197.32 is down.
> Host pages.ebay.com (66.135.205.14) is down.
> Host ir1.fp.vip.mud.yahoo.com (209.191.122.70) is down.
> Host vw-in-f106.1e100.net (74.125.113.106) is down.
> Host slashdot.org (216.34.181.45) is up (0.044s latency).
> Nmap done: 5 IP addresses (1 host up) scanned in 14.26 seconds
>            Raw packets sent: 10 (280B) | Rcvd: 6 (168B)
>
>
> Why is that?
>
> Thanks!
>
> ------------------------------------------------------------------------
> 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, 
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> http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
> ------------------------------------------------------------------------

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