Penetration Testing
an anternative to port-knoking using the OpenBSD pf only Jan 23 2006 09:44PM
poplix (poplix papuasia org) (2 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Feb 17 2006 08:52AM
gimeshell web de (1 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Feb 20 2006 09:58PM
poplix (poplix papuasia org) (1 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Feb 22 2006 10:00AM
Pete Herzog (lists isecom org) (1 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Feb 27 2006 11:09PM
poplix (poplix papuasia org) (1 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Jan 24 2006 09:56AM
Joachim Schipper (j schipper math uu nl) (1 replies)
Re: an anternative to port-knoking using the OpenBSD pf only Feb 17 2006 08:12AM
gimeshell web de
On Tue, 24 Jan 2006 10:56:34 +0100
Joachim Schipper <j.schipper (at) math.uu (dot) nl [email concealed]> wrote:

> On Mon, Jan 23, 2006 at 10:44:52PM +0100, poplix wrote:
> > Hi there,
> >
> > I wish to propose an alternative to port knoking that uses the
> > native OpenBSD's pf code only. The idea is to use the pf's passive
> > os fingerprinter to authenticate initial SYN packets.
> > With a tool (or kernel patch) able to rewrite packets header is
> > possible to use a specific sequence of header fields as a key to
> > validate packets.
>
> This is an interesting - albeit not exactly new - idea, but it has the
> very real disadvantage over port knocking that it requires priviliges
> (typically root) on the connecting host.
>

I'm fairly new to network security so i'm
wondering what's the problem using root priviliges to connect to server?
Do you mean, this is a general security problem or simply a client-side
disadvantage?
Do you think, running such a packet rewriter on client-side opens new
doors for attackers and reduces client-side security thus?

regards

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