Access network shares from SharePoint

I have a number of forms and documents that my branch offices use on a regular basis.  I'm building an new file server on my network and instead of just adding the files to a SharePoint list I wanted to just link to the directories on my network?   That way I only have to maintain the files in one place and everyone can access them whether they are in the office or at a customers facility.  Anywhere they have internet access so they can access SharePoint.