Terminology And Acronyms; Snmp Managers And Agents - 3Com 3C10402B Administrator's Manual

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HAPTER ETWORK
Terminology and
Acronyms
SNMP Managers
and Agents
M
ANAGEMENT
Make sure you are familiar with the following terminology and acronyms,
which are commonly used when discussing SNMP operations.
Table 67 SNMP Terminology and Acronyms
Item
Authentication
CBC
HMAC
Inform
Key
MD5
Notification
Privacy
SHA
Trap
USM
VACM
MIB
An agent using network elements stores network information about itself
in a Management Information Base (MIB). MIBs specify the variables that
network elements maintain. For example, a variable can contain the data
that records when you last booted the system.
SNMP managers are network hosts that use SNMP software to poll the
network devices and receive the information stored in them.
Managers use UDP port 161 by default to send requests to the agent
■
Agents use UDP port 162 by default to send replies or messages to the
■
manager.
Detail
Process of ensuring data origin authenticity, specifically that
the identity of the user is genuine. Also incorporates data
integrity checks, to ensure data has not been altered or
destroyed in an unauthorized manner.
Cipher-Block-Chaining (a method of encoding data
encryptions in a message).
Keyed-Hash Message Authentication Code. Provides message
authentication through the use of cryptographic hash
functions.
Reliable notification of an SNMPv3 event.
A value that is used to ensure authenticity or privacy, without
which it is almost impossible to masquerade or eavesdrop.
Message Digest type 5 (a type of hashing function).
SNMPv3 event.
The hiding of data from eavesdroppers.
Secure Hashing Function (a type of hashing function).
SNMPv1 message notifying the manager of a system event.
User-based Security Model.
View-based Access Control Model.
Management Information Base.