[Winpcap-users] Installation question
gianluca.varenni at cacetech.com
Thu Jun 28 15:39:28 GMT 2007
I'm not familiar with the Jetico Personal Firewall, so my answer is based
on how I think this firewall software works. Most of these personal
firewalls use an NDIS intermediate driver (NDIS IM driver) to filter
packets. These filters sit between your network card driver and the protocol
drivers like tcp/ip, the WinPcap capture driver (npf) and netmon (another
protocol driver from Microsoft that we use to capture from dialup and vpn
When a new protocol driver gets installed, several times the OS recomputes
the bindings between network card drivers, IM drivers and protocol drivers,
causing (in your case) the rebinding of the "Jetico Personal Firewall
Network Monitor" on top of some the network card drivers and the usual
"driver not signed" warning from XP. In practice, WinPcap is not directly
responsible for the warning, and it's not actually a
reinstallation/overwriting of the Jetico Personal Firewall drivers, it's a
rebinding process taking place.
I hope this explains what happened during the WinPcap installation.
BTW, if you happen to install another network card on your machine, you will
probably see the "unsigned driver" dialog popping up again, as part of the
Have a nice day
----- Original Message -----
From: "Dedalus" <ulysse at email.it>
To: <winpcap-users at winpcap.org>
Sent: Wednesday, June 27, 2007 11:46 PM
Subject: [Winpcap-users] Installation question
> Hi at All.
> I use Jetico Personal Firewall (now it is release 184.108.40.206) and as OS
> Windows Xp sp2 Professional. Today I try to install WinPCap 4.0 and during
> the installation process I have received two messages that warning me for
> "Jetico Personal Firewall Network Monitor" unsigned drivers (Windows Xp
> I have cancel the installation of the two "Jetico" drivers.
> The installation process should be to recognize that Jetico it is already
> installed and not overwrite my "Jetico Personal Firewall Network Monitor"
> Email.it, the professional e-mail, gratis per te: http://www.email.it/f
> Che regalo scegli? un idropulitrice? un aspirapolvere? o preferisci una
> motoscopa? Prova qui
> Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=6756&d=28-6
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