[PATCH] Update 'restrict anonymous' in smb.conf.5 manpage

Andreas Schneider asn at samba.org
Wed Feb 6 15:39:09 UTC 2019


I had some questions about this options so I've looked at the code and updated 
the manpage accordingly.

Review is much appreciated.



Andreas Schneider                      asn at samba.org
Samba Team                             www.samba.org
GPG-ID:     8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D
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>From a5006a21f689a2b7524617e6930ef1db82131532 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn at samba.org>
Date: Tue, 5 Feb 2019 16:08:46 +0100
Subject: [PATCH] docs-xml: Update documentation for 'restrict anonymous'

Signed-off-by: Andreas Schneider <asn at samba.org>
 .../smbdotconf/security/restrictanonymous.xml | 45 ++++++++++---------
 1 file changed, 23 insertions(+), 22 deletions(-)

diff --git a/docs-xml/smbdotconf/security/restrictanonymous.xml b/docs-xml/smbdotconf/security/restrictanonymous.xml
index 78cafd21d55..593bff330c6 100644
--- a/docs-xml/smbdotconf/security/restrictanonymous.xml
+++ b/docs-xml/smbdotconf/security/restrictanonymous.xml
@@ -3,34 +3,35 @@
-    <para>The setting of this parameter determines whether user and
-    group list information is returned for an anonymous connection.
-    and mirrors the effects of the
-           Control\LSA\RestrictAnonymous
-	registry key in Windows 2000 and Windows NT.  When set to 0, user
-	and group list information is returned to anyone who asks.  When set
-    to 1, only an authenticated user can retrieve user and
-    group list information.  For the value 2, supported by
-    Windows 2000/XP and Samba, no anonymous connections are allowed at
-    all.  This can break third party and Microsoft
-    applications which expect to be allowed to perform
-	operations anonymously.</para>
+	<para>
+		The setting of this parameter determines whether SAMR and LSA
+		DCERPC services can be accessed anonymously. This corresponds
+		to the following Windows Server registry options:
+	</para>
+	<programlisting>
+		HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\RestrictAnonymous
+	</programlisting>
+	<para>
+		The option also affects the browse option which is required by
+		legacy clients which rely on Netbios browsing. While modern
+		Windows version should be fine with restricting the access
+		there could still be applications relying on anonymous access.
+	</para>
-    The security advantage of using restrict anonymous = 1 is dubious,
-    as user and group list information can be obtained using other
-	means.
+		Setting <smbconfoption name="restrict anonymous">1</smbconfoption>
+		will disable anonymous SAMR access.
-	<note>
-    The security advantage of using restrict anonymous = 2 is removed
-    by setting <smbconfoption name="guest ok">yes</smbconfoption> on any share.
+		Setting <smbconfoption name="restrict anonymous">2</smbconfoption>
+		will in addition to restrict SAMR access disallow anonymous connections
+		to the IPC$ share in general.
+		Setting <smbconfoption name="guest ok">yes</smbconfoption> on any share
+		will will remove the security advantage.
-	</note>
 <value type="default">0</value>

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