Home > Email Security Gateway
Choose a sub category:
Email Security Gateway 100 Appliance Email Security Gateway 100 Services
Email Security Gateway 200 Appliance Email Security Gateway 200 Services
Email Security Gateway 300 Appliance Email Security Gateway 300 Services
Email Security Gateway 400 Appliance Email Security Gateway 400 Services
Email Security Gateway 600 Appliance Email Security Gateway 600 Services
Email Security Gateway 800 Appliance Email Security Gateway 800 Services
Email Security Gateway 900 Appliance Email Security Gateway 900 Services
Email Security Gateway 1000 Appliance Email Security Gateway 1000 Services
Email Security Gateway Vx Virtual Appliance Email Security Gateway Vx Virtual Appliance Services
Email Security Gateway for Amazon Web Service Email Security Gateway for Windows Azure

Barracuda Spam & Virus Firewall Architecture

The Barracuda Spam & Virus Firewall provides a powerful, easy-to-use and affordable solution for complete protection of an organization’s email infrastructure. It eliminates spam and virus intrusions while safeguarding an organization’s reputation through content inspection based on policy for both inbound and outbound email. Outbound filtering also prevents confidential or sensitive information from being purposely or inadvertently leaked outside the organization.

  • Anti-spam
  • Anti-virus
  • Anti-spoofing
  • Anti-phishing
  • Anti-spyware (Attachments)
  • Denial of Service
  • Data Leak Prevention
  • Cloud Protection Layer

Powerful, Complete Solution
The Barracuda Spam & Virus Firewall is compatible with all email servers and can fit into nearly any corporate or small business environment. It is used by small organizations with as few as 10 employees and large organizations with as many as 200,000 employees. A single Barracuda Spam & Virus Firewall handles up to 100,000 active email users. Multiple units can be clustered together for even greater capacity and high availability.

The Barracuda Spam & Virus Firewall protects your email server with twelve defense layers:

  • Network Denial of Service Protection
  • Rate Control
  • IP Reputation Analysis
  • Sender Authentication
  • Recipient Verification
  • Virus Scanning
  • Policy (User-specified rules)
  • Spam Fingerprint Check
  • Intent Analysis
  • Image Analysis
  • Bayesian Analysis
  • Rule-Based Scoring

The Barracuda Spam & Virus Firewall architecture optimizes the processing of each email to maximize performance and process millions of messages per day. Unlike software solutions, the Barracuda Spam & Virus Firewall reduces the load placed on the email server by offloading both spam and virus filtering.

All Barracuda Spam & Virus Firewall models include comprehensive outbound filtering techniques including attachment scanning, virus filtering, rate controls and encryption. These features help organizations to ensure that all outgoing email is legitimate and virus-free.

In addition, Barracuda Spam & Virus Firewall includes email encryption using a cloud-based portal and Data Loss Prevention features like attachment content scanning.

Cloud Protection Layer

Barracuda Spam & Virus Firewall includes a Cloud Protection Layer to stop spam and viruses in the cloud. In this mode, inbound emails are first scanned by the cloud before delivery. The Cloud Protection Layer also features multiple delivery options. If the primary delivery destination is unavailable, then emails are delivered to a secondary destination. If both the primary and secondary destinations are unavailable, then undelivered email is stored for later delivery.


With no software to install or modifications required to existing email systems, installation of the Barracuda Spam & Virus Firewall is quick and easy. Once installed, the system administrator uses the intuitive Web interface for monitoring and maintenance. With Barracuda Energize Updates, the Barracuda Spam & Virus Firewall is continuously updated with the latest spam and virus definitions every hour keeping maintenance to the unit at a minimum and eliminating administrative overhead. Updates are provided by Barracuda Central, an advanced 24x7 security operations center that works to continuously monitor and block the latest Internet threats.


At Barracuda Networks, we design and build products not only for their power and ease-of-use, but also for their affordability. With no per user license fees, the Barracuda Spam & Virus Firewall is the most affordable enterprise-class spam and virus solution available.