Can you create a VPN through a public (but private IP range) network?

[Mark Mattix]

So a business has a guest network that restricts access to the internet. Assuming this business okies it, is it possible for me to plug my 5505 ASA into this port and create a VPN back to my headquarters? Then when this VPN is functional I will deploy my own AP for my employees to use. 

My main concern is, can this be done when I don't control the IP scheme of this business. It seems like I would need to use something like Anyconnect but with my 5505 as the client. Thanks for any advice!

[Mark Mattix]

Diagram of what I'm trying to accomplish

[Richard Burts]

There are probably some things about this environment that we do not understand and which might impact our advice. But based on what you have told us so far I would think it was quite possible to set up your ASA5505 in their network and to establish a site to site VPN back to your headquarters. Your headquarters would treat this as a VPN to peer with a variable address. The VPN tunnel could be activated only from the remote site (not activated from headquarters).

HTH

Rick