SNMP_VACM(3)						   BSD Library Functions Manual 					      SNMP_VACM(3)

NAME

     snmp_vacm -- View-based Access Control module for bsnmpd(1)

LIBRARY

     (begemotSnmpdModulePath."vacm" = /usr/lib/snmp_vacm.so)

DESCRIPTION

     The 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
     bsnmpd and the modules loaded in the daemon.  The module must be loaded for bsnmpd to implement proper view-based access control. If the mod-
     ule is not loaded, access is granted to all configured SNMPv1 & SNMPv2c communities and SNMPv3 USM users.

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 bsnmpd 's config file, otherwise entries created via SNMP are lost after reboot.  A short description of the objects in the MIB
     follows.

     vacmContextTable
		A read-only table that consists of a list of SNMP contexts available in bsnmpd.

     vacmSecurityToGroupTable
		The table contains a list of SNMPv1, v2c and v3 user names and the groups they belong to.

     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.

     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.

FILES

     /usr/share/snmp/defs/vacm_tree.def
		The description of the MIB tree implemented by snmp_vacm.

SEE ALSO

     bsnmpd(1), gensnmptree(1), snmpmod(3)

STANDARDS

     IETF RFC 3415

AUTHORS

     Shteryana Shopova <syrinx@FreeBSD.org>

BSD
								  October 7, 2010							       BSD