full-disclosure - Victory day - Sasser surrenders

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From: mducharme at cybergeneration.com (Maxime Ducharme)
Subject: Victory day - Sasser surrenders

Hi

193/8 is not internal (see IANA :
http://www.iana.org/assignments/ipv4-address-space )

This usually happens with NAT'ed hosts, which advertise
themselves with their current IP (which is local), but the
when the SMTP server isnt in the same range, it sees the
NAT'ed IP which isnt the same.

By 'advertise' I mean the HELO part of a SMTP transaction.

The server then adds the IP it really sees in parenthesis after
the advertised IP from the host, thats why we can see both
of them.

Some prefer not to make it public, some other just dont bother ;)

Have a nice day

Maxime Ducharme
Programmeur / Sp?cialiste en s?curit? r?seau

----- Original Message ----- 
From: "Rob Clark" <rob@...er-worx.co.uk>
To: <full-disclosure@...ts.netsys.com>
Sent: Tuesday, May 11, 2004 10:34 AM
Subject: Re: [Full-Disclosure] Victory day - Sasser surrenders


>
> 193.x.x.x isnt internal,,, is it?
> >
> >
> > --On Monday, May 10, 2004 12:16 PM +0200 fd <fulldis@...7.dyndns.org>
wrote:
> >
> > > I'd remove something from the mailer:
> > >   Received: from [192.168.195.2] ([193.7.145.26])
> >
> > Why? Not all of us care about disclosing "internal" IP addresses. :)
> >
> > -J
> >
> >
> > --
> > Jeff Workman | http://www.pimpworks.org/nigritude-ultramarine.html
> >
> > _______________________________________________
> > Full-Disclosure - We believe in it.
> > Charter: http://lists.netsys.com/full-disclosure-charter.html
> >
> >
>
>
> -- 
> This email may contain confidential and privileged information for the
> sole use of the intended recipient. Any review or distribution by others
> is strictly prohibited. If you are not the intended recipient, please
> contact the sender and delete all copies of this email message.
>
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html
>