Cisco Cisco NAC Appliance 4.9.5 Release Notes

You can download the NAC OpenSSL vulnerability patch from Cisco Software Download Site 
(

).

You can download the NAC OpenSSL vulnerability patch from Cisco Software Download Site 
(

).

The following steps summarize how to perform new CD software installation of Release 4.9(5) on 
supported Cisco NAC Appliance hardware platforms (see 

 for additional support details).

To upgrade on an existing Cisco NAC Appliance, refer to the instructions in 

. 

The click in the NAC is configured with default settings like default priority, CPU usage etc. The driver 
loop of the click thread uses the full CPU whenever other processes are idle. The CPU usage of click can 
reach 99%. As the thread runs with default priority, other processes like tomcat can take over whenever 
requests come for them. The high CPU usage of click will not lead to any performance issues.

With Release 4.9(5), installation occurs in two phases: 

The software is installed from the CD, and when complete, the CD is ejected from the appliance.

The admin logs in and performs the initial configuration.

CSCus42840 

Yes

January 2015 OpenSSL vulnerabilities

CSCus42836 

Yes

January 2015 OpenSSL vulnerabilities

CSCuu82725 

Yes

Evaluation of Clean Access Server for OpenSSL June 2015 

CSCuu83378 

Yes

Evaluation of Clean Access Manager for OpenSSL June 2015