This is similar to the way SOCKS vpn's work - except if designed properly
can be used for very good extranets... This sort of encapsulation mechanism
has been around for many a year... ;-)

Cheers,
 - Derek.

> -----Original Message-----
> From: Brian Gibbons [mailto:brian@outersite.co.nz]
> Sent: Friday, June 29, 2001 9:21 PM
> To: Ben Milsom; ADSL
> Subject: Re: Http Tunneling
>
>
> >From: "Ben Milsom" <zk_bhm@hotmail.com>
> >I have seen these words "HTTP Tunnelling" around places, but I am not
> really
> >sure of what they do and how they can be used.
> >From the name I can pick out a vague idea, but If someone
> here knows about
> >this and would like to share concepts/usages of it
> >with me, then I would be most interested.
>
> This little hack is for (e.g.) corporate bods stuck behind
> the corporate
> firewall that want to log on to their favorite IRC chat room
> and pass the
> time of day. Unfortunately the corporate firewall only allows
> Web access and
> specifically denies access to the Internet on IRC TCP ports.
>
> Some bright spark decided to create a "VPN tunnel modem
> driver" that takes
> IP traffic, encapsulates into an HTPP Request and shoots it
> off (through the
> corporate firewall) to a Web/Tunnel server on the Internet.
> That Web server
> decapsulates the traffic, routes the payload to the Internet and
> encapsulates response data as an HTTP response and shoots it
> back to the
> tunnel driver.
>
> So you just carved a hole through the corporate firewall, you
> can now route
> to your IRC server.
>
> Not the most efficient L2 tunneling protocol, and I doubt it will ever
> appear in an RFC, but I doubt the users of the protocol care
> that much..
>
> Cheers
>
> BG.
>
>
>
>
>
> This message is part of the NZ ADSL mailing list.
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Received on Mon Jul 2 10:11:40 2001