Cisco Cisco Firepower Management Center 4000

Version 5.3

Sourcefire 3D System Release Notes

21

Updating Your Appliances

14. If the rule update available on the Support site is newer than the rules on your 

Defense Center, import the newer rules.
For information on rule updates, see the Sourcefire 3D System User Guide.

15. If the VDB available on the Support Site is newer than the VDB on your 

Defense Center, install the latest VDB.
Installing a VDB update causes 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.

16. Reapply device configurations to all managed devices.

To reactivate a grayed-out Apply button, edit any interface in the device 

configuration, then click Save without making changes.

17. Reapply access control policies to all managed devices.

Do not reapply your intrusion policies individually; you must 

reapply all access control policies completely.

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.

18. If a patch for Version 5.3 is available on the Support site, apply the latest patch 

as described in the Sourcefire 3D System Release Notes for that version.

Updating Managed Devices

After you update your Defense Centers to Version 5.3, use them to update the 

devices they manage.
Updating managed devices is a two-step process. First, download the update 

from the Support Site and upload it to the managing Defense Center. Next, install 

the software. You can update multiple devices at once, but only if they use the 

same update file.
For the Version 5.3 update, all devices reboot. Managed devices do not perform 

traffic inspection, switching, routing, NAT, VPN, or related functions during the 

update. Depending on how your devices are configured and deployed, the update 

process may also affect traffic flow and link state. For more information, see