1 <samba:parameter name="lanman auth"
4 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
6 <para>This parameter determines whether or not <citerefentry><refentrytitle>smbd</refentrytitle>
7 <manvolnum>8</manvolnum></citerefentry> will attempt to
8 authenticate users or permit password changes
9 using the LANMAN password hash. If disabled, only clients which support NT
10 password hashes (e.g. Windows NT/2000 clients, smbclient, but not
11 Windows 95/98 or the MS DOS network client) will be able to
12 connect to the Samba host.</para>
14 <para>The LANMAN encrypted response is easily broken, due to its
15 case-insensitive nature, and the choice of algorithm. Servers
16 without Windows 95/98/ME or MS DOS clients are advised to disable
19 <para>When this parameter is set to <value>no</value> this
20 will also result in sambaLMPassword in Samba's passdb being
21 blanked after the next password change. As a result of that
22 lanman clients won't be able to authenticate, even if lanman
23 auth is re-enabled later on.
26 <para>Unlike the <command moreinfo="none">encrypt
27 passwords</command> option, this parameter cannot alter client
28 behaviour, and the LANMAN response will still be sent over the
29 network. See the <command moreinfo="none">client lanman
30 auth</command> to disable this for Samba's clients (such as smbclient)</para>
32 <para>If this option, and <command moreinfo="none">ntlm
33 auth</command> are both disabled, then only NTLMv2 logins will be
34 permited. Not all clients support NTLMv2, and most will require
35 special configuration to use it.</para>
38 <value type="default">no</value>