📄 snmp-user-based-sm-mib.txt
字号:
DESCRIPTION "The total number of packets received by the SNMP
engine which were dropped because they didn't
contain the expected digest value.
"
::= { usmStats 5 }
usmStatsDecryptionErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The total number of packets received by the SNMP
engine which were dropped because they could not be
decrypted.
"
::= { usmStats 6 }
-- The usmUser Group ************************************************
usmUser OBJECT IDENTIFIER ::= { usmMIBObjects 2 }
usmUserSpinLock OBJECT-TYPE
SYNTAX TestAndIncr
MAX-ACCESS read-write
STATUS current
DESCRIPTION "An advisory lock used to allow several cooperating
Command Generator Applications to coordinate their
use of facilities to alter secrets in the
usmUserTable.
"
::= { usmUser 1 }
-- The table of valid users for the User-based Security Model ********
usmUserTable OBJECT-TYPE
SYNTAX SEQUENCE OF UsmUserEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "The table of users configured in the SNMP engine's
Local Configuration Datastore (LCD).
To create a new user (i.e., to instantiate a new
conceptual row in this table), it is recommended to
follow this procedure:
1) GET(usmUserSpinLock.0) and save in sValue.
2) SET(usmUserSpinLock.0=sValue,
usmUserCloneFrom=templateUser,
usmUserStatus=createAndWait)
You should use a template user to clone from
which has the proper auth/priv protocol defined.
If the new user is to use privacy:
3) generate the keyChange value based on the secret
privKey of the clone-from user and the secret key
to be used for the new user. Let us call this
pkcValue.
4) GET(usmUserSpinLock.0) and save in sValue.
5) SET(usmUserSpinLock.0=sValue,
usmUserPrivKeyChange=pkcValue
usmUserPublic=randomValue1)
6) GET(usmUserPulic) and check it has randomValue1.
If not, repeat steps 4-6.
If the new user will never use privacy:
7) SET(usmUserPrivProtocol=usmNoPrivProtocol)
If the new user is to use authentication:
8) generate the keyChange value based on the secret
authKey of the clone-from user and the secret key
to be used for the new user. Let us call this
akcValue.
9) GET(usmUserSpinLock.0) and save in sValue.
10) SET(usmUserSpinLock.0=sValue,
usmUserAuthKeyChange=akcValue
usmUserPublic=randomValue2)
11) GET(usmUserPulic) and check it has randomValue2.
If not, repeat steps 9-11.
If the new user will never use authentication:
12) SET(usmUserAuthProtocol=usmNoAuthProtocol)
Finally, activate the new user:
13) SET(usmUserStatus=active)
The new user should now be available and ready to be
used for SNMPv3 communication. Note however that access
to MIB data must be provided via configuration of the
SNMP-VIEW-BASED-ACM-MIB.
The use of usmUserSpinlock is to avoid conflicts with
another SNMP command responder application which may
also be acting on the usmUserTable.
"
::= { usmUser 2 }
usmUserEntry OBJECT-TYPE
SYNTAX UsmUserEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "A user configured in the SNMP engine's Local
Configuration Datastore (LCD) for the User-based
Security Model.
"
INDEX { usmUserEngineID,
usmUserName
}
::= { usmUserTable 1 }
UsmUserEntry ::= SEQUENCE
{
usmUserEngineID SnmpEngineID,
usmUserName SnmpAdminString,
usmUserSecurityName SnmpAdminString,
usmUserCloneFrom RowPointer,
usmUserAuthProtocol AutonomousType,
usmUserAuthKeyChange KeyChange,
usmUserOwnAuthKeyChange KeyChange,
usmUserPrivProtocol AutonomousType,
usmUserPrivKeyChange KeyChange,
usmUserOwnPrivKeyChange KeyChange,
usmUserPublic OCTET STRING,
usmUserStorageType StorageType,
usmUserStatus RowStatus
}
usmUserEngineID OBJECT-TYPE
SYNTAX SnmpEngineID
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "An SNMP engine's administratively-unique identifier.
In a simple agent, this value is always that agent's
own snmpEngineID value.
The value can also take the value of the snmpEngineID
of a remote SNMP engine with which this user can
communicate.
"
::= { usmUserEntry 1 }
usmUserName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(1..32))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "A human readable string representing the name of
the user.
This is the (User-based Security) Model dependent
security ID.
"
::= { usmUserEntry 2 }
usmUserSecurityName OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION "A human readable string representing the user in
Security Model independent format.
The default transformation of the User-based Security
Model dependent security ID to the securityName and
vice versa is the identity function so that the
securityName is the same as the userName.
"
::= { usmUserEntry 3 }
usmUserCloneFrom OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION "A pointer to another conceptual row in this
usmUserTable. The user in this other conceptual
row is called the clone-from user.
When a new user is created (i.e., a new conceptual
row is instantiated in this table), the privacy and
authentication parameters of the new user must be
cloned from its clone-from user. These parameters are:
- authentication protocol (usmUserAuthProtocol)
- privacy protocol (usmUserPrivProtocol)
They will be copied regardless of what the current
value is.
Cloning also causes the initial values of the secret
authentication key (authKey) and the secret encryption
key (privKey) of the new user to be set to the same
value as the corresponding secret of the clone-from
user.
The first time an instance of this object is set by
a management operation (either at or after its
instantiation), the cloning process is invoked.
Subsequent writes are successful but invoke no
action to be taken by the receiver.
The cloning process fails with an 'inconsistentName'
error if the conceptual row representing the
clone-from user does not exist or is not in an active
state when the cloning process is invoked.
When this object is read, the ZeroDotZero OID
is returned.
"
::= { usmUserEntry 4 }
usmUserAuthProtocol OBJECT-TYPE
SYNTAX AutonomousType
MAX-ACCESS read-create
STATUS current
DESCRIPTION "An indication of whether messages sent on behalf of
this user to/from the SNMP engine identified by
usmUserEngineID, can be authenticated, and if so,
the type of authentication protocol which is used.
An instance of this object is created concurrently
with the creation of any other object instance for
the same user (i.e., as part of the processing of
the set operation which creates the first object
instance in the same conceptual row).
If an initial set operation (i.e. at row creation time)
tries to set a value for an unknown or unsupported
protocol, then a 'wrongValue' error must be returned.
The value will be overwritten/set when a set operation
is performed on the corresponding instance of
usmUserCloneFrom.
Once instantiated, the value of such an instance of
this object can only be changed via a set operation to
the value of the usmNoAuthProtocol.
If a set operation tries to change the value of an
existing instance of this object to any value other
than usmNoAuthProtocol, then an 'inconsistentValue'
error must be returned.
If a set operation tries to set the value to the
usmNoAuthProtocol while the usmUserPrivProtocol value
in the same row is not equal to usmNoPrivProtocol,
then an 'inconsistentValue' error must be returned.
That means that an SNMP command generator application
must first ensure that the usmUserPrivProtocol is set
to the usmNoPrivProtocol value before it can set
the usmUserAuthProtocol value to usmNoAuthProtocol.
"
DEFVAL { usmNoAuthProtocol }
::= { usmUserEntry 5 }
usmUserAuthKeyChange OBJECT-TYPE
SYNTAX KeyChange -- typically (SIZE (0 | 32)) for HMACMD5
-- typically (SIZE (0 | 40)) for HMACSHA
MAX-ACCESS read-create
STATUS current
DESCRIPTION "An object, which when modified, causes the secret
authentication key used for messages sent on behalf
of this user to/from the SNMP engine identified by
usmUserEngineID, to be modified via a one-way
function.
The associated protocol is the usmUserAuthProtocol.
The associated secret key is the user's secret
authentication key (authKey). The associated hash
algorithm is the algorithm used by the user's
usmUserAuthProtocol.
When creating a new user, it is an 'inconsistentName'
error for a set operation to refer to this object
unless it is previously or concurrently initialized
through a set operation on the corresponding instance
of usmUserCloneFrom.
When the value of the corresponding usmUserAuthProtocol
is usmNoAuthProtocol, then a set is successful, but
effectively is a no-op.
When this object is read, the zero-length (empty)
string is returned.
The recommended way to do a key change is as follows:
1) GET(usmUserSpinLock.0) and save in sValue.
2) generate the keyChange value based on the old
(existing) secret key and the new secret key,
let us call this kcValue.
If you do the key change on behalf of another user:
3) SET(usmUserSpinLock.0=sValue,
usmUserAuthKeyChange=kcValue
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -