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Security Overview
Precedence of Security Options
configured or RADIUS-assigned) is re-applied unless there have been other
configuration changes to the parameter. In this way, NIM allows you to
minimize network problems without manual intervention.
NIM also allows you to configure and apply client-specific profiles on ports
that are not configured to authenticate clients (unauthorized clients), provided
that a client’s MAC address is known in the switch’s forwarding database.
The profile of attributes applied for each client (MAC address) session is
stored in the hpicfUsrProfile MIB, which serves as the configuration interface
for Network Immunity Manager. A client profile consists of NIM-configured,
RADIUS-assigned, and statically configured parameters. Using show
commands for 802.1X, web or MAC authentication, you can verify which
RADIUS -assigned and statically configured parameters are supported and if
they are supported on a per-port or per-client basis.
A NIM policy accesses the hpicfUsrProfileMIB through SNMP to perform the
following actions:
â– Bind (or unbind) a profile of configured attributes to the MAC address of
a client device on an authenticated or unauthenticated port.
â– Configure or unconfigure an untagged VLAN for use in an authenticated
or unauthenticated client session.
Note that the attribute profile assigned to a client is often a combination of
NIM-configured, RADIUS-assigned, and statically configured settings.
Precedence is always given to the temporarily applied NIM-configured
parameters over RADIUS-assigned and locally configured parameters.
For information on HP E-Network Immunity Manager, go to the HP
Networking web site at www.hp.com/solutions, click on Security, and then click
on Security Products.
Arbitrating Client-Specific Attributes
In previous releases, client-specific authentication parameters for 802.1X
Web, and MAC authentication are assigned to a port using different criteria.
A RADIUS-assigned parameter is always given highest priority and overrides
statically configured local passwords. 802.1X authentication parameters
override Web or MAC authentication parameters.
Starting in release K.13.xx, DCA stores three levels of client-specific
authentication parameters and prioritizes them according to the following
hierarchy of precedence:
1. NIM access policy (applied through SNMP)
2. RADIUS-assigned
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