I have 5 sites connected together with me and single VPN concentrator which is used by my remote users to gain inside access.

I want to have a setup such that even if my one user from site 1 goes to another site2 he should be able to access my network devices only through vpn tunnel...

One way is that he can cum through the internet ?

My question is?in what way he will be able to access the resources without using internet link..

It should be like an internal vpn client ?is it possible using vpn concentrator

Kindly suggest?

Thanks in advance