A Virtual Private Network (VPN) does this. It will allow you to print in a remote office or access a database there. Once you have set up a VPN you can use it to back up your critical data or even run your surveillance system over it.
Basically, a VPN is a private network that uses a public network (usually the Internet) to connect remote sites or users together. A VPN can work over your broadband and create, what will appear to be a dedicated connection between your offices or employees.
If you are interested in adding this capability to your network, give CompuGuide a call for a site survey and quote.