samba-mirror/docs-xml/smbdotconf/winbind/rejectmd5servers.xml

<samba:parameter name="reject md5 servers"
                 context="G"
                 type="boolean"
                 advanced="1"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
	<para>This option controls whether winbindd requires support
	for aes support for the netlogon secure channel.</para>

	<para>The following flags will be required NETLOGON_NEG_ARCFOUR,
	NETLOGON_NEG_SUPPORTS_AES, NETLOGON_NEG_PASSWORD_SET2 and NETLOGON_NEG_AUTHENTICATED_RPC.</para>

	<para>You can set this to yes if all domain controllers support aes.
	This will prevent downgrade attacks.</para>

	<para>The behavior can be controlled per netbios domain
	by using 'reject md5 servers:NETBIOSDOMAIN = yes' as option.</para>

	<para>This option takes precedence to the <smbconfoption name="require strong key"/> option.</para>
</description>

<value type="default">no</value>
</samba:parameter>