Spam Firewalls


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Barracuda Spam Firewall Overview:

 

Benefits:

Protect Against Email-Borne ThreatsProtect Against Email-Borne Threats

Secure inbound email traffic against email-borne threats. With the Barracuda Spam Firewall, protecting against inbound malware, spam, phishing, and Denial of Service attacks ensures that business productivity isn’t impacted by attacks through the email system. Powerful and customizable policies enable further enforcement of detailed requirements that govern inbound email messages.

Key Features: Spam Protection, Virus Protection, Denial of Service (DoS) Attack Protection

Stop Threats Before They Hit the NetworkStop Threats Before They Hit the Network

Offload CPU-intensive tasks to the cloud, like antivirus and DDoS filtering, to reduce processing load on the appliance and ensure threats never reach the network perimeter. The Barracuda Spam Firewall is integrated with a cloud-based service that pre-filters email before delivery to the onsite Barracuda Spam Firewall, which performs further inbound security checks and outbound filtering.

Key Features: Spam and Virus Pre-Filtering

Ensure Continuous Email Availability
Ensure Continuous Email Availability

Ensure that email is available even when mail servers fail. Because email is a critical vehicle by which today’s businesses operate, a failure of the email server can significantly limit business operations. With the Cloud Protection Layer, bundled free of charge with the Barracuda Spam Firewall, email is spooled for up to 96 hours, with an option to re-direct traffic to a secondary server.

Key Features: Email Spooling

Protect Sensitive Data

Protect Sensitive Data

Leverage powerful encryption technology to ensure sensitive data cannot be viewed by outside parties. Outbound filtering and quarantine capabilities ensure that every outbound email complies with corporate DLP policies.

Key Features: Encryption, Outbound Filtering

Simplify Email SecuritySimplify Email Security

Configurations on the Barracuda Spam Firewall are simple and easy to deploy, ensuring customized email protection is in place in a matter of minutes. Day-to-day management is enhanced through cloud-based centralized management that is included without additional fees.

The affordable, all-inclusive pricing model requires no per-user fees, minimizing the investment in securing your email infrastructure.

Key Features: Cloud-Based Central Management, Simple Pricing

Features:

Spam Protection

With a long-standing heritage in spam protection, Barracuda Networks remains the leader in identifying and blocking spam. A comprehensive set of security layers ensures that organizations remain productive in the face of evolving threats.

The Barracuda Spam Firewall leverages Barracuda Central to identify email from known spammers and determine whether domains embedded in email lead to known spam or malware domains. It leverages many of the same industry-leading techniques found in the Barracuda Spam Firewall that protect against attempts to embed text inside images with the intent of hiding content from traditional spam filters.

Virus Protection

As virus attacks become more sophisticated and complex, email infrastructure requires advanced virus protection. The potential for the destruction and release of information, or the disruption of a network severely impacts productivity and can lead to financial loss.

The Barracuda Spam Firewall scans email and incoming files using three powerful layers of virus scanning technology. It also decompresses archives for complete protection. Powerful virus definitions are automatically updated via Energize Updates to maintain the most up-to-date protection against email-borne viruses.

To provide protection from tainted internal email, a Microsoft Exchange Plug-In allows organizations to protect against the spread of viruses that don’t access the email gateway. The virus definitions are also regularly updated to ensure the latest protection.

Barracuda Central

All Barracuda products are supported by Barracuda Central, a 24×7 advanced security operations center that works continuously to monitor and block the latest Internet threats. Barracuda Central collects data from more than 150,000 collection points worldwide and analyzes it to develop defenses, rules, and signatures. As new threats emerge, Barracuda Central is quick to respond to early outbreaks and delivers the latest definitions through Barracuda Energize Updates. These updates require zero administration and ensure that the Barracuda Spam Firewall provides comprehensive and accurate protection against the latest Internet threats.

Denial of Service (DoS) Attack Protection

Not every attack is focused on getting users to send their credit card number, getting users to click on a malicious link, or to plant a virus. Often, the objective of the attack is focused on disabling a network or mitigating its effectiveness. As a cloud-based service, the Barracuda Spam Firewall is positioned to stop spammers before they overload an email server.

Email Spooling

The Barracuda Spam Firewall ensures that email can still be delivered even during email server failures or loss of connectivity. In the event of on-premises disruptions, email can be spooled in the Cloud Protection Layer for up to 96 hours. An alternate destination can also be specified for delivery, if delivery to the primary destination fails.

During email server outages, the email for all mail servers is visible through the Cloud Protection Layer. From the message log, you can see the status of all spooled emails, and whether mail has been re-delivered.

Spam and Virus Pre-Filtering

The Barracuda Spam Firewall is integrated with a cloud-based service that pre-filters email before delivery to the on-site Barracuda Spam Firewall. The Cloud Protection Layer is continuously updated with definitions in real time with updates from Barracuda Central. The elasticity of Barracuda’s global cloud infrastructure provides the flexibility to handle email surges during specific periods of the day and during Denial of Service attacks.

The Cloud Protection Layer ensures that an organization’s email security infrastructure scales with the increasing growth in email volume and attachment sizes; as well as the growth of companies. By leveraging the bandwidth and computing power of the CPL, organizations can easily scale their email security solution.

Encryption

The Barracuda Spam Firewall offers a number of encryption features. It is fully integrated with a cloud-based email encryption service for outbound email. Email that matches policy or are marked for encryption via the Barracuda Outlook Add-in are securely sent via TLS to the Barracuda Message Center.

The Barracuda Message Center uses AES with 256-bit keys to encrypt email. To encrypt email traffic between sites over the Internet, the Barracuda Spam Firewall Message Transport Agent supports SMTP over TLS. This can be used between Barracuda Spam Firewalls or other email servers that support SMTP over TLS.

Outbound Filtering

Outbound filtering prevents organizations from being put on spam block lists and prevents sensitive data in email from leaving the organization. Employees can inadvertently cause internal systems to become a source for botnet spam. Using a subset of its defense layers, the Barracuda Spam Firewall’s outbound filtering stops outbound spam and viruses. It also lets administrators enforce content polices for data loss prevention (DLP) and to meet other content standards in outgoing email. Predefined filters and custom policies can be used to detect sensitive data and block or encrypt email.

Cloud-Based Central Management

The Barracuda Spam Firewall is integrated with the Barracuda Cloud Control (BCC) web-based management portal, which leverages Barracuda’s global cloud infrastructure to enable organizations to centrally manage all their devices through a “single pane of glass” interface. Administrators gain a global view of all their devices or services as well as centrally manage policies and configuration. The simple interface makes it easy for small and medium-sized organizations to implement and manage the service with minimal IT overhead.

Simple Pricing

The Barracuda Email Spam Firewall is delivered with all features and capabilities fully enabled. Inbound and outbound email filtering, encryption, and email continuity are all offered as a simple, all-inclusive subscription without any per-user fees. The Barracuda Cloud Control management portal is included free of charge.

Model Comparison:

There are eight models of the Barracuda Spam Firewall. A single Barracuda Spam Firewall can handle up to 100,000 active email users. Multiple units can be clustered together for even greater capacity and high availability. These specifications are not limits of the system, but are the recommended capacity.

Model Comparison 100* 200 300* 400* 600* 800 900 1000
Capacity
Active Email Users 1-50 51-500 300-1,000 1,000-5,000 3,000-10,000 8,000-22,000 15,000-30,000 25,000-100,000
Domains 10 50 250 500 5,000 5,000 5,000 5,000
Message Log Storage 8 GB 10 GB 12 GB 24 GB 72 GB 120 GB 240 GB 512 GB
Quarantine Storage n/a n/a 20 GB 60 GB 180 GB 360 GB 1 TB 2 TB
Hardware
Rackmount Chassis 1U Mini 1U Mini 1U Mini 1U Mini 1U Fullsize 2U Fullsize 2U Fullsize 2U Fullsize
Dimensions (in.) 16.8 x 1.7 x 9 16.8 x 1.7 x 9 16.8 x 1.8 x 16 16.8 x 1.8 x 16 16.8 x 1.7 x 22.6 17.4 x 3.5 x 25.5 17.4 x 3.5 x 25.5 17.2 x 3.5 x 27.3
Weight (lbs.) 8 8 11 12.1 26 46 52 52
Ethernet 1 x 10/100 1 x Gigabit 1 x Gigabit 1 x Gigabit 2 x 10/100 2 x Gigabit 2 x Gigabit 2 x Gigabit
AC Input Current (Amps) 1.0 1.0 1.2 1.4 1.8 4.1 5.4 7.2
Redundant Disk Array (RAID)  checked Hot Swap Hot Swap Hot Swap Hot Swap
ECC Memory  checked checked checked checked
Redundant Power Supply N/A Hot Swap Hot Swap Hot Swap
Features
Outbound Email Filtering checked checked checked checked checked checked checked checked
Email Encryption  checked checked checked checked checked checked checked checked
Large File Transfer  checked  checked  checked  checked  checked  checked  checked  checked
Cloud Protection Layer  checked  checked  checked  checked  checked  checked  checked  checked
MS Exchange/LDAP Accelerator  checked  checked  checked  checked  checked  checked
Per-User Settings and Quarantine  checked  checked  checked  checked  checked  checked
Delegated Help Desk Role  checked  checked  checked  checked  checked  checked
Syslog Support  checked  checked  checked  checked  checked  checked
Clustering & Remote Clustering  checked  checked  checked  checked  checked
Per Domain Settings  checked  checked  checked  checked  checked
Single Sign-On  checked  checked  checked  checked  checked
SNMP/API  checked  checked  checked  checked  checked
Customizable Branding  checked  checked  checked  checked
Per User Score Settings  checked  checked  checked  checked
Delegated Domain Administration  checked  checked  checked  checked

*Also available in Vx (Virtual Edition)

Technical Specs

Comprehensive Protection
Comprehensive Protection

  • Spam and virus filtering
  • Cloud Protection Layer
  • Prevents spoofing, phishing, and malware
  • Denial of Service (DoS/DDoS) protection
  • Directory harvest protection
  • Outbound email filtering

DLP & Reputation Loss
DLP & Reputation Loss

  • Maintain compliance
  • Prevents reputation loss and blacklisting
  • Pre-defined filters (e.g., HIPAA, credit card,
    and U.S. Social Security Numbers)
Advanced Policy Control
Advanced Policy Control

  • IP and content-based filtering
  • Content encryption
  • Sender/recipient filtering
  • RBL and DNSBL support
  • Keyword blocking
  • Character-set blocking
  • Reverse DNS blocking
  • URL pattern and category blocking
  • TLS encryption policy
  • Secondary authentication

Sender Authentication
Sender Authentication

  • SPF and DomainKeys
  • Emailreg.org
  • Invalid bounce suppression
Spam Filter
Spam Filter

  • Rate control
  • IP reputation analysis
  • Fingerprint and image analysis
  • Rules-based scoring algorithms
  • Barracuda Anti-Fraud Intelligence

Virus Filter
Virus Filter

  • Triple-layer virus blocking
  • Integrated Exchange AV Agent
  • Decompression of archives
  • File type blocking
  • Barracuda Antivirus Supercomputing Grid

System Features

Support Options

Hardware Features

Administrators
Administrators

  • Web-based interface
  • User account administration
  • Reports, graphs, and statistics
  • LDAP interface
  • Multiple domain support
  • Secure remote administration
  • Delegated domain administration
  • Delegated help desk role
  • Email spooling
  • Configure backup to cloud

End Users
End Users

  • User-based filtering
  • Individual spam scoring
  • Personal allow and block lists
  • End-user quarantine and digest emails
  • Outlook/Lotus Notes integration
  • Bayesian analysis
Barracuda Energize Updates
Barracuda Energize Updates

  • Standard technical support
  • Hourly spam definition updates
  • Barracuda Reputation Databases
  • Fingerprint and intent analysis definitions
  • Hourly virus definition updates

Instant Replacement Service
Instant Replacement Service

  • Replacement unit shipped next business day
  • 24×7 technical support
  • Hardware refresh every four years
Connectors
Connectors

  • Standard VGA
  • PS/2 keyboard/mouse
  • Ethernet (see chart)

Virtual Appliance
Virtual Appliance

  • Hardened OS
  • Four models to choose from
  • Common hypervisor support, including
    VMware ESX and VMware ESXi

Deployments:

The Barracuda Spam Firewall is a comprehensive email security solution that manages all inbound and outbound email traffic to protect organizations from email-borne threats and data leaks. Flexible deployment options include hardware and virtual appliances, cloud services and hybrid configurations — making this solution ideal for safeguarding any size organization. In addition to protecting traffic to and from the Internet, the solution also includes a Microsoft Exchange Anti-virus Agent to protect internal emails. Widely used by over 75,000 organizations, the award-winning Barracuda Spam Firewall has no per-user, per-agent or per-server fees.

Barracuda Spam Firewall’s comprehensive features and functionality yield a phenomenal 95 percent spam catch rate out of the box with one of the lowest false positive rates in the industry. Although affordable and easy to use, the Barracuda Spam Firewall provides the most effective and complete email security in the industry.

Comprehensive Approach to Email Security

The Barracuda Spam Firewall’s multilayered approach to email security provides the most comprehensive protection available. It also optimizes email performance several ways to affordably process millions of messages per day. Its internal filtering technology employs time-tested defense layers while the Cloud Protection Layer adds advanced cloud-based technologies: the Barracuda Anti- Fraud Intelligence Engine detects and blocks fraudulent emails and the Barracuda Anti-Virus Supercomputing Grid detects and blocks polymorphic viruses that try to evade detection by changing their signatures.

Barracuda Spam Firewall Architecture

Barracuda Central

All Barracuda Networks products are backed by Barracuda Central, a 24×7 advanced technology center consisting of highly trained engineers who continuously monitor and block the latest Internet threats. Barracuda Central collects emails, URLs and other data from tens of thousands of collection points located in more than 80 countries. In addition, Barracuda Central collects data contributions from more than 50,000 Barracuda products in use by customers. Barracuda Central analyzes the data collected and develops defenses, rules and signatures to defend your network.

As new threats emerge, Barracuda Central is quick to respond to early outbreaks and delivers the latest definitions through Barracuda Energize Updates. These updates require zero administration and ensure that the Barracuda Spam Firewalls provide comprehensive and accurate protection against the latest threats.

Barracuda Central
Barracuda Central monitors data 24×7 from tens of thousands of collection points located in over 80 countries and more than 40,000 Barracuda Spam Firewalls in use by customers. As new threats emerge, Barracuda Central is quick to respond to early outbreaks and delivers the latest definitions automatically through Barracuda Energize Updates.P address.

Anti-Spam Protection

Barracuda Reputation:
Barracuda Central collects IP addresses used in spam attacks and legitimate email campaigns for reputation analysis. Reputation analysis lets the Barracuda Spam Firewall filter look up senders’ IP addresses on Barracuda Networks’ block or allow lists. “Grey area” addresses are analyzed through nine other defense layers. Reputation and other upfront checks let the Barracuda Spam Firewall block over half of emails in the connection-management layers before emails are received.

With Barracuda Reputation analysis, the Barracuda Spam Firewall can quickly and efficiently make decisions to block or accept email messages based on the sender's IP address.
With Barracuda Reputation analysis, the Barracuda Spam Firewall can quickly and efficiently make decisions to block or accept email messages based on the sender’s IP address.

Antivirus Protection

Triple-Layer Virus Protection:
The Barracuda Spam Firewall scans emails and incoming files using three powerful layers of virus scanning technology. It also decompresses archives for complete protection. This triple-layer antivirus protection uses powerful open source and propriety virus definitions, which automatically update via Energize Updates and Real Time Protection. Virus scanning takes precedence over other email scans. Barracuda Spam Firewalls worldwide collectively block more than one million virus attempts on a typical day.

Barracuda Networks triple-layer virus protection includes powerful open source and proprietary virus definitions and Barracuda Real-Time Protection for the most comprehensive email-borne virus and malware protection in the industry.
Barracuda Networks triple-layer virus protection includes powerful open source and proprietary virus definitions and Barracuda Real-Time Protection for the most comprehensive email-borne virus and malware protection in the industry.

Internal Email Protection:
With its antivirus agent for Microsoft Exchange, the Barracuda Spam Firewall protects internal emails. Viruses can easily enter an internal email system through the use of Outlook Web Access or POP/IMAP on systems not under the organization’s control. The agent runs as a Windows service on the Exchange server letting the server scan internal emails for viruses. It uses the same virus definitions as the Barracuda Spam Firewall. Configuring and monitoring the agent are also done via the Barracuda Spam Firewall’s intuitive web interface. The Barracuda Spam Firewall provides a single place for managing inbound, outbound and internal email virus protection.

The antivirus agent for Microsoft Exchange protects internal emails.
The antivirus agent for Microsoft Exchange protects internal emails.

Barracuda Real-Time Protection:
Barracuda Real-Time Protection is a set of advanced technologies that lets the Barracuda Spam Firewalls instantly block the latest viruses and other malware as they emerge. It draws from the largest and most diverse installed base in the industry to detect early trends in email threats. Immediately upon virus or malware classification, Barracuda Real-Time Protection sends a response via Barracuda Central to any Barracuda Spam Firewall that has submitted the malware fingerprints to block the message. This, plus a third layer of antivirus protection, enables the fastest response to email-borne virus threats in the industry.

Barracuda Real-Time Protection draws from the largest and most diverse installed base in the industry to detect early trends in email-borne threats.
Barracuda Real-Time Protection draws from the largest and most diverse installed base in the industry to detect early trends in email-borne threats. Immediately upon virus or malware classification, Barracuda Central responds to any Barracuda Spam Firewalls submitting the corresponding fingerprints with an instruction to immediately block the message.

Cloud Protection Layer

Cloud Protection Layer:
The Barracuda Spam Firewall is integrated with a cloud-based service that prefilters emails before delivery to the on-site Barracuda Spam Firewall, which performs further security checks and is needed for outbound filtering. The Cloud Protection Layer uses technologies that have been time tested with the Barracuda Spam Firewall along with advanced cloud-based technologies including:

  • Barracuda Anti-Fraud Intelligence Engine, which detects and blocks fraudulent emails
  • Barracuda Anti-Virus Supercomputing Grid, which detects and blocks polymorphic viruses that try to evade detection by changing their signatures

The Cloud Protection Layer stops spam and malware in the cloud. It also provides email continuity.
The Cloud Protection Layer stops spam and malware in the cloud. It also provides email continuity.

Policy and Compliance

Outbound Filtering:
The Barracuda Spam Firewall also filters outbound emails. Outbound filtering prevents organizations from being put on spam block lists and prevents sensitive data in emails from leaving the organization. Employees can inadvertently cause internal systems to become a source for botnet spam. Using a subset of its defense layers, the Barracuda Spam Firewall’s outbound filtering stops outbound spam and viruses. It also lets administrators enforce content polices for data loss prevention and to meet other content standards in outgoing emails. Predefined filters and custom policies can be used to detect sensitive data and block or encrypt emails.

Outbound filtering protects organizations from being placed on spam block lists and leaking sensitive data in emails.
Outbound filtering protects organizations from being placed on spam block lists and leaking sensitive data in emails.

Encryption:
The Barracuda Spam Firewall offers a number of encryption features. It is fully integrated with a cloud-based email encryption service for outbound emails. Emails that match policy or are marked for encryption via the Barracuda Outlook Add-in are securely sent via TLS to the Barracuda Message Center. The Barracuda Message Center uses AES with 256 bit keys to encrypt emails. To encrypt email traffic between sites over the Internet, the Barracuda Spam Firewall Message Transport Agent supports SMTP over TLS. This can be used between Barracuda Spam Firewalls or other email servers that support SMTP over TLS.

Outbound email encryption protects sensitive data in emails. It provides secure transit and storage for emails.
Outbound email encryption protects sensitive data in emails. It provides secure transit and storage for emails.

Barracuda Spam Firewall offers per-user, domain and global policy management.
Barracuda Spam Firewall offers per-user, domain and global policy management.

Policy Management:
Built for the diverse needs of small and medium businesses, enterprises, educational institutions, government institutions and ISPs, the Barracuda Spam Firewall offers global, domain-level, and individual user policy control. Depending on the model, policies can be combined and customized for maximum flexibility. Several spam-scanning features can be customized for each email user including block lists, allow lists, quarantining, scoring thresholds and Bayesian analysis. Domain-level features for policy management include: inbound and outbound quarantines, outbound encryption, block and allow lists based on IP address or sender/ recipient email address or domain, reporting, and recipient validation via LDAP.

 

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