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PowerConnect B-Series FCX Configuration Guide 1369
53-1002266-01
Using the user-based security model
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NOTE
If display of the strings is encrypted, the strings are not displayed. Encryption is enabled by default.
Using the user-based security model
SNMP version 3 (RFC 2570 through 2575) introduces a User-Based Security model (RFC 2574) for
authentication and privacy services.
SNMP version 1 and version 2 use community strings to authenticate SNMP access to
management modules. This method can still be used for authentication. In SNMP version 3, the
User-Based Security model of SNMP can be used to secure against the following threats:
• Modification of information
• Masquerading the identity of an authorized entity
• Message stream modification
• Disclosure of information
SNMP version 3 also supports View-Based Access Control Mechanism (RFC 2575) to control
access at the PDU level. It defines mechanisms for determining whether or not access to a
managed object in a local MIB by a remote principal should be allowed. (refer to “SNMP v3
Configuration examples” on page 1379.)
Configuring your NMS
In order to use the SNMP version 3 features.
1. Make sure that your Network Manager System (NMS) supports SNMP version 3.
2. Configure your NMS agent with the necessary users.
3. Configure the SNMP version 3 features in Dell PowerConnect devices.
Configuring SNMP version 3 on Dell PowerConnect devices
Follow the steps given below to configure SNMP version 3 on Dell PowerConnect devices.
1. Enter an engine ID for the management module using the snmp-server engineid command if
you will not use the default engine ID.Refer to “Defining the engine id” on page 1370.
2. Create views that will be assigned to SNMP user groups using the snmp-server view command.
refer to “SNMP v3 Configuration examples” on page 1379 for details.
3. Create ACL groups that will be assigned to SNMP user groups using the access-list command.
4. Create user groups using the snmp-server group command.Refer to “Defining an SNMP group”
on page 1370.
5. Create user accounts and associate these accounts to user groups using the snmp-server user
command.Refer to “Defining an SNMP user account” on page 1371.
If SNMP version 3 is not configured, then community strings by default are used to authenticate
access.