You will need to create the SNMP V3 user. See: https://net-snmp.sourceforge.io/wiki/index.php/TUT:SNMPv3_Options for a tutoria on configuration setup.
You might also want to check your access control: https://net-snmp.sourceforge.io/wiki/index.php/Vacm On Tue, Aug 9, 2022 at 3:48 AM 김동휘 <andyki...@rocketibt.co.kr> wrote: > I am now implement a snmp agent based on the unbuntu/net-snmp[ver > 5.0.11.2]. > > > > - SNMP v3 > > - SNMP Manager IP : 192.168.10.171[for agent test], SNMP Agent IP > : 192.168.10.180 > > > > My snmpd.conf file is like the following > > ================================================================= > > com2sec andytest localhost public > > com2sec mynetwork 192.168.10.0/24 enseirb > > > > group MyRWGroup v1 andytest > > group MyRWGroup v2c andytest > > group MyRWGroup usm andytest > > group MyROGroup v1 mynetwork > > group MyROGroup v2c mynetwork > > group MyROGroup usm mynetwork > > > > #view systemview included .1.3.6.1.2.1.1 > > #view systemview included .1.3.6.1.2.1.25.1.1 > > view all included .1 > 80 > > > > access MyROGroup "" any noauth exact systemview none > none > > access MyRWGroup "" any noauth exact all all none > > ================================================================= > > > > The MIB file is simple for testing. > > ================================================================= > > ENSEIRB-MIB DEFINITIONS ::= BEGIN > > > > IMPORTS > > enterprises > > FROM SNMPv2-SMI, > > MODULE-IDENTITY > > FROM SNMPv2-SMI > > MODULE-COMPLIANCE, > > OBJECT-GROUP > > FROM SNMPv2-CONF; > > > > -- > > -- A brief description and update information about this mib. > > -- > > enseirb MODULE-IDENTITY > > LAST-UPDATED "0104010000Z" -- 01 Apr 2001, midnight > > ORGANIZATION "ENSEIRB" > > CONTACT-INFO " > > Author: Patrice Kadionik > > phone: +33-5-56-84-65-00 > > " > > DESCRIPTION "MIB for remote control by SNMP" > > ::= { enterprises 9362 } > > > > leds OBJECT IDENTIFIER::= { enseirb 1 } > > > > > > -- > > -- LED 0 connected to the PC parallel port > > -- > > led0 OBJECT-TYPE > > SYNTAX Integer32 (0..1) > > MAX-ACCESS read-write > > STATUS current > > DESCRIPTION > > "Led 0 connected to bit 0 of the PC parallel port." > > DEFVAL { 0 } > > ::= { leds 1 } > > > > > > END > > ================================================================= > > > > When I try to access the agent[192.168.10.180] using snmpwalk(snmpwalk -v > 3 -u andytest 192.168.10.180 system), > > “snmpwalk: Unknown user name” message is displayed. > > > > > > The agent log file is like the following > > ================================================================= > > **************************** Recv Part **************************** > > trace: snmp_parse_var_op(): snmp.c, 151 > > dumph_recv: Name > > dumpx_recv: 06 06 2B 06 01 02 01 01 > > dumpv_recv: ObjID: SNMPv2-MIB::system > > trace: snmp_pdu_parse(): snmp_api.c, 4241 > > dumph_recv: Value > > trace: _snmp_parse(): snmp_api.c, 3967 > > snmp_parse: Parsed SNMPv3 message (secName:andytest, > secLevel:noAuthNoPriv): USM unknown security name (no such user exists) > > > > **************************** Send Part **************************** > > trace: snmp_realloc_rbuild_var_op(): snmp.c, 427 > > dumph_send: Name > > dumpx_send: 06 0A 2B 06 01 06 03 0F 01 01 03 00 > > dumpv_send: ObjID: > SNMP-USER-BASED-SM-MIB::usmStatsUnknownUserNames.0 > > ================================================================= > > > > I have looked into the source code of the parsing the manager data. > > The usm_get_user_from_list() is called, but any valid data is not returned > because there is not a user information in the userList. > > > > Why there isn’t a valid data in the userList? > > I think that the usm_add_user() and usm_save_users() functions save the > information of user into the userList. > > But two function are never called when the snmpd(agent) is initialized. > > > > What could I clear this problem? > > > > > _______________________________________________ > Net-snmp-users mailing list > Net-snmp-users@lists.sourceforge.net > Please see the following page to unsubscribe or change other options: > https://lists.sourceforge.net/lists/listinfo/net-snmp-users >
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