This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 44 versions of rasmans.dll in the wild, the latest version being 6.3.9600.16384 (winblue_rtm.130821-1623). The average file size is about 225.24 KB. The executable is a .NET framework assembly utilizing the CLR.
(Note, the behaviors below are for all versions of rasmans.dll, select a unique version for details.)
United States installs about 28.52% of Remote Access Connection Manager.