lmhosts - The Samba NetBIOS hosts file . lmhosts is the Samba NetBIOS name to IP address mapping file. This file is part of the Samba suite. lmhosts is the Samba NetBIOS name to IP address mapping file. It is very similar to the /etc/hosts file format, except that the hostname component must correspond to the NetBIOS naming format. It is an ASCII file containing one line for NetBIOS name. ... Each line in the lmhosts file contains the following information : . ...