There is already a question similiar: Samba (smb) alternative which allows outside LAN connections.
My requirements differ, I simply need to be able to mount a drive which is located in my linux server's filesystem - from my windows box - in my lan.
It should be as fast as possible (I think FTP is too slow, overhead + timeouts) and requires basic up and download with public and private shares.
I want to get away from the default smb/samba package because I never get it to work persistently or is not compatible with Win 8.1.