Re: Nmap ICMP/TCP Ping Insubordination

On Mon, Jun 07, 2004 at 11:40:59AM +0300, Noam Rathaus wrote:

> I noticed a very inconsitent (with the man file) behavior of Nmap,
> I run two command line:
> 1) ./nmap-3.50/nmap -PT80 -sP -d -n www.microsoft.com
> (under the root user)
> 2) /nmap-3.50/nmap -PT80 -sP -d -n www.microsoft.com
> (under the non-root user)

> Both should do the same, TCP Ping the host www.microsoft.com,

Option -PT does not do the same for root and non root users. From the
man page, option -PT: "... spew out TCP ACK packets ... For non root
users, we use connect()".

Sniff both (1) and (2) with tcpdump/ethereal and see the
conversations.

Martin Mačok
IT Security Consultant

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Received on Jun 07 2004