From: Martin Mačok (martin.macok@underground.cz)
Date: Thu Aug 11 2005 - 07:49:48 EDT
On Wed, Aug 10, 2005 at 02:25:18PM +0200, Kaj Huisman wrote:
> Anyway. a 'full connect' scan (one that performs the complete
> three-way handshake will _always_ (?) be the most reliable.
You mean connect() scan? No, with connect() API you can't properly
distinguish between RST (closed port) and ICMP Port Unreachable
(filtered port) for example [RFC 1122] ...
> My sugeestion is to perform either a nmap connect scan on the ports
> from both results or to manually telnet to the ports and see the
> response.
Regarding Nmap, the fastest and most reliable scanning technique is
SYN scan, not a connect() scan ...
Martin Mačok
ICT Security Consultant
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