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Barracuda Load Balancer ADC

Release Notes Version

  • Last updated on

Before installing any firmware version, back up your configuration and read all release notes that apply to versions more recent than the one currently running on your system.

Do not manually reboot your system at any time during an update unless otherwise instructed by Barracuda Networks Technical Support. Depending on your current firmware version and other system factors, updating can take up to 10 minutes. If the process takes longer, contact Barracuda Networks Technical Support for further assistance.


  • Support has been added for the HTTP/2 protocol over HTTPS. [BNADC-7208]


  • High Availability now supports automatic failover in case a critical process fails on an active device. [BNADC-1485]
  • Server health checks now support HTTP/1.0 and HTTP/1.1. [BNADC-5632]
  • The internal platform utilities and kernel have been upgraded. [BNADC-6461]
  • LDAP nested groups across different domains are now supported. [BNADC-7595]
  • The FTP access log can now be exported instantly. [BNADC-8408]


  • Global Server Load Balancing (GSLB) can now process traffic without interruption. [BNADC-7021]
  • The serial number of the clustered peer Barracuda Load Balancer ADC is now displayed on the ADVANCED > High Availability page in the Clustered System section. [BNADC-7101]
  • Both units in a high availability cluster are in the active state. This has been addressed. [BNADC-7134]    
  • You can now specify the maximum number of times a user can attempt to authenticate. [BNADC-7392]
  • When starting Instant SSL with an existing HTTP service, there are duplicate database variables. This has been addressed. [BNADC-7471]
  • A report is now sent when an SMTP server is configured with a username and password. [BNADC-7866]
  • A character is being removed while completing a SharePoint rewrite. This has been addressed. [BNADC-7933]
  • Dual Authentication is now supported with LDAP as the primary authentication service and Radius as the secondary authentication service. [BNADC-8022]
  • The initial characters of a certificate name can now include numbers. [BNADC-8137]
  • If you set Enable High Availability to Yes, the default value for Failback Mode is now set to Manual. [BNADC-8155]
  • Changing the service type from INSTANT SSL to HTTP/HTTPS and then back to INSTANT SSL now correctly creates the Redirect service. [BNADC-8422]
  • After upgrading the firmware, the system failed to reboot due to a networking issue. This has been addressed. [BNADC-8449]
  • If the LDAP authentication service's default role is changed by the administrator in the ADVANCED > Admin Access Control page, the role of LDAP mapped users is not changed. [BNADC-8453]
  • The domain name can now be sent along with the username to the Radius server for user authentication. [BNADC-8598]