Home page logo

basics logo Security Basics mailing list archives

Re: Yet another thread on the legality of port scanning
From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Sun, 21 Mar 2004 18:22:06 +0100

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

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.

Ansgar Wiechers

Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off 
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. 
Attend a course taught by an expert instructor with years of in-the-field 
pen testing experience in our state of the art hacking lab. Master the skills 
of an Ethical Hacker to better assess the security of your organization. 
Visit us at: 

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]