Cisco Cisco Firepower Management Center 4000

Version 5.3

Sourcefire 3D System Release Notes

18

Updating Your Appliances

After the Installation

After you perform the update on either the Defense Center or managed devices, 

you must reapply device configuration and access control policies. Applying an 

access control policy may cause a short pause in traffic flow and processing, and 

may also cause a few packets to pass uninspected. For more information, see the 

Sourcefire 3D System User Guide.
There are several additional post-update steps you should take to ensure that 

your deployment is performing properly. These include:

verifying that the update succeeded

making sure that all appliances in your deployment are communicating 

successfully

checking the Support site to see if a patch is available for Version 5.3

updating your intrusion rules and vulnerability database (VDB), if necessary

After you complete the system software update, install VDB 

build 156 or later to your Defense Center and reapply your access control 

policies.

making any required configuration changes based on the information in 

The next sections include detailed instructions not only on performing the update, 

but also on completing any post-update steps. Make sure you complete all of the 

listed tasks.