All MIBs › SNMPv2-USEC-MIB › usecStatsUnknownUserNames
usecStatsUnknownUserNames
Module: SNMPv2-USEC-MIB
OID (symbolic): SNMPv2-USEC-MIB::usecStatsUnknownUserNames
OID (numeric): 1.3.6.1.6.3.6.1.2.3
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The total number of packets received by the SNMPv2 entity which were dropped because they referenced a user that was not known to the agent.
What is usecStatsUnknownUserNames?
This is a cumulative count of packets dropped because they referenced a USM username the agent doesn't recognize. An admin checks this to spot misconfigured SNMP credentials or unauthorized probing attempts using guessed usernames. For example, this counter climbing steadily could mean someone is scanning the agent with unknown SNMPv3 usernames.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.6.3.6.1.2.3 snmpwalk -v2c -c public <target> SNMPv2-USEC-MIB::usecStatsUnknownUserNames
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.6.3.6.1.2.3.1 snmpget -v2c -c public <target> SNMPv2-USEC-MIB::usecStatsUnknownUserNames.1
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.6 | snmpV2 | DASAN-DHCP-MIB |
| 1.3.6.1.6.3 | snmpModules | OSBRiDGE5XLi-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.6.3.6 | usecMIB | SNMPv2-USEC-MIB |
| 1.3.6.1.6.3.6.1 | usecMIBObjects | SNMPv2-USEC-MIB |
| 1.3.6.1.6.3.6.1.2 | usecStats | SNMPv2-USEC-MIB |
| 1.3.6.1.6.3.6.1.2.3 | usecStatsUnknownUserNames | SNMPv2-USEC-MIB |