This isn't very apparent for some reason, but probably should be. The Security
Services 2.0.1 download (which is for servers) includes a new set of NMAS
methods, including a new NMAS Challenge Response method for
clients(chalresp_setup.exe). This one is dated 2/3/2006, version is;
the one in 4.91sp2 is dated 12/5/2005, version 2.07.0001.