[NTLUG:Discuss] Scanning networks

[Patrick Parks]

Thanks all for the replies. I am using nmap to scan my network, but the
question I had was if I scan my gateway ip from behind my network, with
an IP that was aliased, and not a trusted host on my network, should I
get accurate results? Previously I was scanning from the same host
behind my network, but the IP was a trusted host on my gateway,
therefore, I saw the ports. I hope I am putting this in the right
context.



On Mon, 2002-10-07 at 09:42, Tom Woody wrote:
> Unauthorized access to or prevention of access to a machine would be
> considered illegal.  All you have to do is run any logging on an
> internet connected host and you will see that scanning is the number one
> pasttime of a lot of people.
> 
> Port Scanning is like the Wardialing that Telemarketers do - with the
> exception my internet host doesn't ring every time one of the a##%@(!$
> makes the call.  If it did I would be a lot less jovial person!
> 
> 
> On Mon, 7 Oct 2002 19:35:33 +0530
> "Vaidya, Harshal (Cognizant)" <HarshalV at pun.COGNIZANT.COM> wrote:
> 
> > I thought that scanning like this was banned and deemed to be
> > illegal... 
> > 
> > -----Original Message-----
> > From: Jay Urish [mailto:j at yourlinuxguru.com]
> > Sent: Saturday, October 05, 2002 1:04 AM
> > To: discuss at ntlug.org
> > Subject: Re: [NTLUG:Discuss] Scanning networks
> > 
> > 
> > Why don't you post your eth0 ip and I can scan it from my box...
> > 
> > 
> > 
> > At 02:30 PM 10/4/2002 -0500, you wrote:
> > >I am in the process of securing my network, and have a few questions.
> > >I have DSL, and have a RH box set up with 2 nics, 1 to local net and
> > >one to DSL. When I scan the DSL IP from inside my network, am I
> > >actually going through the net or am I seeing it from inside my
> > >network? The machine I am using to scan it with is also a trusted
> > >host on the gateway box, so should  I use ip aliasing and assign a
> > >different ip to my nic in the machine I am using to scan and try
> > >scanning that way to see what really is open? Thanks
> > >
> > >Patrick Parks
> > >--
> > >
> > >_______________________________________________
> > >https://ntlug.org/mailman/listinfo/discuss
> > 
> > 
> > _______________________________________________
> > https://ntlug.org/mailman/listinfo/discuss
> > 
> 
> 
> -- 
> Tom Woody
> Systems Administrator
> NationWide Flood Research, Inc.
> phone: 214-631-0400 x209
>   fax: 214-631-0800
> 
> Don't throw your computer out the window, 
> throw the Windows out of your computer! 
> 
> 
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> 
> 
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