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snmp_vacm.3
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vacm_snmp.c
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vacm_tree.def
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Editing: snmp_vacm.3
.\"- .\" Copyright (C) 2010 The FreeBSD Foundation .\" All rights reserved. .\" .\" This documentation was written by Shteryana Sotirova Shopova under .\" sponsorship from the FreeBSD Foundation. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" $FreeBSD$ .\" .Dd October 7, 2010 .Dt SNMP_VACM 3 .Os .Sh NAME .Nm snmp_vacm .Nd "View-based Access Control module for" .Xr bsnmpd 1 .Sh LIBRARY .Pq begemotSnmpdModulePath."vacm" = "/usr/lib/snmp_vacm.so" .Sh DESCRIPTION The .Nm snmp_vacm module implements SNMPv3 View-based Access Control Model MIB as defined in RFC 3415. The module is used to manage the internal lists of SNMPv1, v2c and v3 user names and groups and their access rights to fetch or modify the values of the MIB objects maintained by .Nm bsnmpd and the modules loaded in the daemon. The module must be loaded for .Nm bsnmpd to implement proper view-based access control. If the module is not loaded, access is granted to all configured SNMPv1 & SNMPv2c communities and SNMPv3 USM users. .Sh IMPLEMENTATION NOTES An entry in any table implemented by this MIB may be created by setting the relevant RowStatus column to createAndGo (4) - in fact, any other value for those columns in a SET operation will cause an error. When an entry is created, any of its columns that is not used as index, is set to the default value as specified in the SNMP-VIEW-BASED-ACM-MIB. All entries maintained by the module are persistent after reboot if created via .Nm bsnmpd 's config file, otherwise entries created via SNMP are lost after reboot. A short description of the objects in the MIB follows. .Bl -tag -width "XXXXXXXXX" .It Va vacmContextTable A read-only table that consists of a list of SNMP contexts available in .Nm bsnmpd . .It Va vacmSecurityToGroupTable The table contains a list of SNMPv1, v2c and v3 user names and the groups they belong to. .It Va vacmAccessTable The table contains a list of SNMP contexts to groups mappings and respectively the names of the SNMP views under those contexts, to which users in the group are granted read-only, read-write access or receive notifications for the objects under the subtree in the relevant view. .It Va vacmViewTreeFamilyTable The table contains a list of SNMP views, i.e. entries specifying the OID of a MIB subtree and whether access to the objects under this subtree is to be allowed or forbidden. .El .Sh FILES .Bl -tag -width "XXXXXXXXX" .It Pa /usr/share/snmp/defs/vacm_tree.def The description of the MIB tree implemented by .Nm . .El .Sh SEE ALSO .Xr bsnmpd 1 , .Xr gensnmptree 1 , .Xr snmpmod 3 .Sh STANDARDS IETF RFC 3415 .Sh AUTHORS .An Shteryana Shopova Aq syrinx@FreeBSD.org
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