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Date: Sun, 13 Apr 1997 18:04:48 +1000 (EST)
From: "Daniel O'Callaghan" <danny@panda.hilink.com.au>
To: Ernie Elu <ernie@spooky.eis.net.au>
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Subject: Re: VPN with encrypted data stream
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On Sat, 12 Apr 1997, Ernie Elu wrote:

> Does anyone have any suggestions how I might construct a Virtual Private
> Network with an encrypted data stream?
> 
> The scenario is two FreeBSD systems that are Internet gateways for a company
> that has offices in several states. And they want to transfer files, email,
> fileserver traffic etc. via the Internet but keep it secure.

There is a program called ipip, which is IP over IP.  It is not 
encrypted, but DES encrypting the data before encapsulation could not be 
too hard.  It's on my to-do list, but a long way down.

See ftp.hilink.com.au:/pub/Net/ipip.tar.gz

Danny