Situation: The client created a VPN server on workgroup Windows 2008 server.
After establishing the VPN connecting and mapping a shared folder, the
user can't save a file to the Windows 2008.
Troubleshooting: For a test, we try to save the same file to Public folder.
It works. Comparing both Public and shared folder, we found the Public
folder has been assigned everyone group to the Security tab and the shared
folder was assigned the permissions to users. Adding Everyone group to the
shared folder, the user can save the file.