Firewall and VPN Device

jason.dowd at us.pwcglobal.com jason.dowd at us.pwcglobal.com
Mon Oct 25 10:43:35 EDT 1999


I agree that this configuration is the best from a security aspect.
However, many of our clients have not been that interested in this
configuration for one reason or another. For connections between different
sites of the same organization, for example, the additional security has
not be a requirement.

This makes great sense for third-party connections though!

Jason




lhebert at netesys.com (Laurent Hebert) on 10/22/99 03:03:41 PM
To:   David Mostardi <davidm at mdli.com>, "'vpn at listserv.secnetgroup.com'"
      <vpn at listserv.secnetgroup.com>
cc:
Subject:  Re: Firewall and VPN Device


-------------- next part --------------


I read somewhere that the solution you propose is the right one.  However,
instead of connecting the VPN box directly on the LAN (in the secure zone),
it was connected on the DMZ of the F/W.  This was to increase the access
control for the VPN traffic since it is decrypted at that point and that
traffic can be treated by the F/W.  In theory, that make sense but I do not
know if the routing capabilities of the VPN boxe will still be able to work
in that mode...


>                       |-----------------<firewall>----------------|
>    <ISP>---<router>                   |                      |---<LAN>
>                       |--<vpn device>---|

   Unsecure Zone                      DMZ                  Secure Zone

----------
> De : David Mostardi <davidm at mdli.com>
> A : 'vpn at listserv.secnetgroup.com'
> Objet : Re: Firewall and VPN Device
> Date?: 22 octobre, 1999 01:26
>
> On Oct 21,  7:12, S Ramakrishnan wrote:
>
> > Consider the two configurations:
> >
> >   <ISP>-<router>-<vpn device>-<firewall>-<LAN>
> >
> > and
> >
> >   <ISP>-<router>-<firewall>-<vpn device>-<LAN>
> >
> > Which of these is more commonly deployed?
>
>
> There is a 3rd configuration, where the firewall
> and VPN box sit side-by-side.  The firewall
> continues to monitor most Internet services,
> except it leaves incoming VPN connections to the
> VPN box.
>
>
>                       |--<firewall>-----|
>    <ISP>---<router>---|                 |---<LAN>
>                       |--<vpn device>---|
>
>
> ------------------------------------------------------------------------
> David Mostardi                                 Web: http://www.mdli.com
> Unix Systems Manager                         Email: davidm at mdli.com
> MDL Information Systems, Inc.                Voice: (510) 357-2222 x1420
> 14600 Catalina St., San Leandro CA 94577       Fax: (510) 352-2870
>
>       -- "When in danger or in doubt, run in circles, scream and shout"
>
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>
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