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RE: Yet another thread on the legality of port scanning
From: "Hoang, Binh P,,DMDCWEST" <Hoangbp () osd pentagon mil>
Date: Sat, 27 Mar 2004 18:33:47 -0500

Guys:
There was a case back in 2000, of which the judge found port scan legal.
Read on.
http://isp-planet.com/politics/port_scan_bol.html

Anyone heard of a recent case?

Binh Hoang
CCSP,CCNA,INFOSEC
EDS/DMDC-Systems Division
hoangbp () osd pentagon mil



-----Original Message-----
From: Ansgar -59cobalt- Wiechers [mailto:bugtraq () planetcobalt net] 
Sent: Sunday, March 21, 2004 9:22 AM
To: security-basics () securityfocus com
Subject: Re: Yet another thread on the legality of port scanning


On 2004-03-18 Charley Hamilton wrote:
On 2004-03-17 Charley Hamilton wrote:
The "reasonable man" hypothesis applies to connecting to a system to 
which authorization is in doubt.  Would a reasonable man conclude 
that http://www.cnn.com is an acceptable connection in the absence 
of explicit permission?  I would say yes, he would. Would a 
reasonable man conclude that ftp://www.cnn.com is an acceptable 
connection in the absence of explicit permission? I would argue no, 
he would not. What's the difference?  HTTP is generally accepted to 
be a public connection, in the sense that it is intended as a shared 
resource, to be accessible to all.  FTP is not generally accepted as 
such, regardless of what electronic storefront happens to be 
offering the service.

That's simply not true.

I admit FTP was a poor choice.  Detailed response in reply to Barry 
Fitzgerald.  Were you also referring to something else?

It's just a hostname, nothing more, nothing less. In some cases the www
server doesn't even have the www-prefix. In other cases it's name is chosen
to represent its purpose (e.g. groups.google.com). So the hostname does in
no way tell you if you are permitted to use it or not. But authentication
does.

Regards
Ansgar Wiechers

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any course! All of our class sizes are guaranteed to be 10 students or less 
to facilitate one-on-one interaction with one of our expert instructors. 
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