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Date:      Mon, 09 Oct 2000 18:16:10 -0700
From:      Mike Thompson <mpthompson@home.net>
To:        freebsd-security@freebsd.org
Subject:   Re: Encrypted IP tunneling solution
Message-ID:  <4.3.2.7.2.20001009180629.00cda790@mail.smateo1.sfba.home.com>
In-Reply-To: <4.3.2.7.2.20001009101945.04999df0@localhost>
References:  <4.3.2.7.2.20001008220611.085d2f00@mail.atomz.com>

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Unfortunately, the work involved on the Windows side is not nearly as easy 
as on the FreeBSD side.  It would most likely mean creating a virtual NDIS 
MAC-layer VxD that essentially serves the same function that /dev/tunXX 
does on FreeBSD and then writing a Windows userland application would tie 
the virtual NDIS driver to an encrypted SSH connection.  Not impossible, 
not trivial either.  I have come across a Windows version of BPF work-alike 
driver (it is even under a Berkeley style license) that would help in 
implementing such a solution.

Mike

At 10:22 AM 10/9/00 -0600, you wrote:
>At 11:56 PM 10/8/2000, Mike Thompson wrote:
>
>>BTW, my ultimate goal behind this little application is to get it working 
>>with Windows clients running SSH protocols where it can serve as a very 
>>simple, but secure VPN solution.
>
>This would be the real value. It would be VERY useful to tunnel Windows 
>clients with minimal effort. It'd be even nicer if it were stand-alone; 
>that is, if it did not require a separate SSH implementation to be 
>installed on the Windows machine. Many of the users who one wants to 
>tunnel into a LAN remotely do not have shell accounts, and giving them 
>such accounts can compromise security and/or be confusing to them. Using 
>SSH 2 (which doesn't require a shell account for port redirection) would 
>be a good way to do this.
>
>--Brett Glass



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