Re: cups relaying remote broadcasts to a local subnet

On Wednesday 24 May 2006 09:35, Gregory P. Ennis wrote:
snip <<<<<

This sounds like an application that could use a vpn (virtual private
network) over the internet. I haven't done this yet but have seen it
used at one company. You should be able to get information from the LPD
howto's on vpn or try googling for vpn.

HTH,
Tom

--
Tom Taylor
Linux user #263467
Federal Way, WA

Tom,

I have not set up a VPN yet either and had wondered the same thing.
Does this mean you believe that cups is not designed to perform in the
way I the network designed?

I thought cups was a little more robust than that!!!

Greg

To the best of my knowledge, cups has no way of communicating with a remote
network without using a vpn.

The 10.x.x.x series of IP addresses is set aside as private address space.
Probably millions of people use it in their internal networks. How is cups
to know which 10.x.x.x to communicate with over the internet? It can
communicate with any allowed private address including subnets within as long
as their is a direct physical or wireless connection. It can't go out over
the internet to find a private address space without a "tunnel" through the
internet (between two internet portals)

If this doesn't make sense, think about how you would control a "remote"
computer. You would need to send a control signal (hopefully encoded)
through your portal (your gateway to your ISP). That signal would have to
know how to find the portal for the remote you wanted to control. Then you
would have to connect to the internal network on the remote whose IP you can
supply to cups. What cups doesn't know is how to make a connection between
the portals. That's where the vpn (the tunnel) comes in. It makes a
connection between the internal network at one site and the internal network
at another remote site and carries the communication over it.

I suspect that if you ask about how to set up the vpn like this on the list,
you will get some better responses than I have given.

Tom

--
Tom Taylor
Linux user #263467
Federal Way, WA







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