3-4
User Guide for Cisco Security MARS Local Controller
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Chapter 3 Configuring Router and Switch Devices
Cisco Router Devices
Password: <password>
Router#
Step 2
Enter the
configure terminal
command to enter configuration mode:
Router#
configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Step 3
Set the SNMP read community string as follows:
Router(config)#
snmp-server community
<read community>
RO
<ACL name if required>
Note
This information is required to retrieve the MAC addresses and associated L2 information.
Step 4
Set the SNMP write community string as follows:
Router(config)#
snmp-server community
<write community> RW
The
Add and Configure a Cisco Router in MARS
procedure provides instructions for configuring the
MARS Appliance to discover configuration and settings using these strings
Enable NAC-specific Messages
Cisco routers and switches that are running Cisco IOS Software release 12.2 or CatOS can enable
network Admission Control (NAC) specific data. This data includes:
•
Client logs.
These logs relate the activities of the client software.
•
RADIUS server logs.
These logs relate the authorization communications between clients and the
posture validation servers.
•
Network access device logs.
These logs relate connection attempts by clients and final
authorizations provided by the AAA server enforcing the NAC policies.
For more information on the events that are logged as part of NAC, see the
Monitoring and Reporting
Tool Integration into Network Admission Control
white paper at the following URL:
http://www.cisco.com/en/US/netsol/ns617/networking_solutions_white_paper0900aecd801dee49.
shtml
This section contains the following two topics, which address the NAC configuration settings specific
to each device type:
•
Cisco Routers, page 3-4
•
Cisco Switches, page 3-5
Cisco Routers
This command ensures that the IOS device sends the IP address of the host that is being NAC’d in its
calling-station-id attribute in all RADIUS requests to the ACS.
To configure the NAC Phase I data on a Cisco router to work with MARS, you must allow EAP over
UDP and allow an IP address in the AAA station-id field of the packets. (Cisco Secure ACS includes this
detail in its logs. MARS presents this data in reports and queries that dispay the host IP addresses.) In
addition, you must enable logging of these events, which are published as syslog messages.