Barracuda Networks recommends the following steps for choosing the best deployment for your network, installing, and configuring the Barracuda Web Application Firewall.
Integration with External Systems and Services - Security Considerations
The Barracuda Web Application Firewall integrates with other systems and services in your environment, such as your authorization server and email system. Barracuda Networks recommends creating separate service accounts for these integration points, rather than personal accounts, and then using the principle of least privilege. This integration strategy is part of an overall security policy. For more information, see Security for Integrating with Other Systems - Best Practices.