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Signed-off-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org> Autobuild-User(master): Andrew Bartlett <abartlet@samba.org> Autobuild-Date(master): Tue Mar 29 03:32:57 UTC 2022 on sn-devel-184
56 lines
2.5 KiB
XML
56 lines
2.5 KiB
XML
<samba:parameter name="lanman auth"
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context="G"
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type="boolean"
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function="_lanman_auth"
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deprecated="1"
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xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
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<description>
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<para>This parameter has been deprecated since Samba 4.11 and
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support for LanMan (as distinct from NTLM, NTLMv2 or
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Kerberos authentication)
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will be removed in a future Samba release.</para>
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<para>That is, in the future, the current default of
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<command>lanman auth = no</command>
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will be the enforced behaviour.</para>
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<para>This parameter determines whether or not <citerefentry><refentrytitle>smbd</refentrytitle>
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<manvolnum>8</manvolnum></citerefentry> will attempt to
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authenticate users or permit password changes
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using the LANMAN password hash. If disabled, only clients which support NT
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password hashes (e.g. Windows NT/2000 clients, smbclient, but not
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Windows 95/98 or the MS DOS network client) will be able to
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connect to the Samba host.</para>
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<para>The LANMAN encrypted response is easily broken, due to its
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case-insensitive nature, and the choice of algorithm. Servers
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without Windows 95/98/ME or MS DOS clients are advised to disable
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this option. </para>
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<para>When this parameter is set to <value>no</value> this
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will also result in sambaLMPassword in Samba's passdb being
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blanked after the next password change. As a result of that
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lanman clients won't be able to authenticate, even if lanman
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auth is re-enabled later on.
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</para>
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<para>Unlike the <parameter moreinfo="none">encrypt
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passwords</parameter> option, this parameter cannot alter client
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behaviour, and the LANMAN response will still be sent over the
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network. See the <command moreinfo="none">client lanman
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auth</command> to disable this for Samba's clients (such as smbclient)</para>
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<para>This parameter is overridden by <parameter moreinfo="none">ntlm
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auth</parameter>, so unless that it is also set to
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<constant>ntlmv1-permitted</constant> or <constant>yes</constant>,
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then only NTLMv2 logins will be permitted and no LM hash will be
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stored. All modern clients support NTLMv2, and but some older
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clients require special configuration to use it.</para>
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<para><emphasis>This parameter has no impact on the Samba AD DC,
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LM authentication is always disabled and no LM password is ever
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stored.</emphasis></para>
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</description>
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<value type="default">no</value>
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</samba:parameter>
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