/etc/freeradius/modules/ntlm_auth is in freeradius 2.2.8+dfsg-0.1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #
# For testing ntlm_auth authentication with PAP.
#
# If you have problems with authentication failing, even when the
# password is good, it may be a bug in Samba:
#
# https://bugzilla.samba.org/show_bug.cgi?id=6563
#
exec ntlm_auth {
wait = yes
program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
}
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