1. Barracuda Web Application Firewall
Web Application Protection Against Hackers and Security Vulnerabilities 1

2. Introduction Application-layer security for Web traffic
Fully application aware
Application Delivery and Acceleration
Web User Access Control
Full-featured, scalable WAF
Familiar Barracuda Networks interface / ease of use
Economical – no per user fees

3. Data Center Assets Increasingly Vulnerable
Identity theft
Data theft
Worms
Denial of Service
SQL Injection
Parameter tampering
Business Implications
Lost revenue
Brand erosion
Regulatory compliance:
SOX, GLBA, HIPAA
74 percent of all Web application vulnerabilities disclosed in 2008 had no available patch to fix them by the end of 2008.
Source: IBM X-Force

4. Challenges with Legacy Security Solutions
Network Firewalls
Blindly allow HTTP/S Web traffic
IPS/IDS
Signature matching only, not application aware
Cannot protect from zero-day attacks
No protection for encrypted traffic
Non deterministic protection
Cannot “normalize” traffic to detect obfuscated attacks
None
Well known signatures only
IPS / Network Firewalls
Data Theft
Application DoS
Google Hacks
Forceful Browsing
Identity Theft
Buffer overflow
Parameter Tampering
Stealth Commanding
Injection Attacks
Cross Site scripting
Hidden field manipulation
Cookie poisoning
Application Firewall
Application Threat
THIS is the reason so many leading Fortune 500 companies and industry experts have concluded that application firewalls are now mandatory.
When you step back and consider the facts, the conclusion is pretty straightforward. They know that (summarize points from this section):
- Apps provide access to sensitive data…
- Firewalls don’t protect…
- IPS and patching…
- Just fixing code is difficult, expensive and slow (leaves holes open for far too long while you’re figuring out what to do)
CONCLUSION – Solution must be:
“Firewall” – Needs to be something at the perimeter that blocks attacks BEFORE they get to the app – extension of defense-in-depth
“Proactive” – Must block attacks before they are known, not reactively chase hackers by waiting for signatures, etc.
“Signature-Based” products will never be able to solve this problem. What’s needed is a
What is Missing?
More insight and control into application structure:
URLs, cookies, headers, FORMs, Session, SOAP actions, XML elements …

5. The solution: Layer 7 security
Firewall blocks only network attacks
Web Applications
Port 80/443 traffic goes through
Barracuda Web Application Firewall
The solution: Barracuda Web Application Firewall
Understands web traffic
Layer 4 and Layer 7 load balancing for Web servers
Accelerates application delivery
Protects against common web attacks
Mitigates broken access control

6. Comprehensive Application Layer Protection
Full inspection of application data input
Complete knowledge of expected values
Real-time policy creation and enforcement
INSPECTS FOR:
Malicious Commands
Illegal Keywords
Hidden Field Tampering
Parameter Tampering
Altered HTTP Methods
Max Length Exceptions
Illegitimate URLs
WSI Profile Validation
XML Schema Validation
Virus/Malware Injection
Distribute DoS
ENFORCES:
Intended application logic
Web site cloaking
Legitimate crawling
Valid parameter values
Non-disclosure of sensitive data
Appropriate session state
SSL and Session security
Valid URLs
Rate Control
Web Applications/Services
Users

7. Barracuda Web Application Firewall Benefits
SECURE
WEB
APPLICATIONS
SCALE UP
AND
SPEED UP
GAIN VISIBIILITY
VIA LOGS
AND REPORTS
ACHIEVE
COMPLIANCE

8. Barracuda Web Application Firewall Benefits
SECURE WEB APPLICATIONS
• Cloak server information
• Protect against Layer 7 attacks
• Data theft protection
• Integrated XML protection
SECURE
WEB
APPLICATIONS
SCALE UP
AND
SPEED UP
GAIN VISIBIILITY
VIA LOGS
AND REPORTS
ACHIEVE
COMPLIANCE

9. Barracuda Web Application Firewall Benefits
SCALE AND SPEED UP APPLICATION DELIVERY
• Load balancing
• Caching
• Compression
• Integrated access control
- LDAP / RADIUS
- Client certificates
SECURE
WEB
APPLICATIONS
SCALE UP
AND
SPEED UP
GAIN VISIBIILITY
VIA LOGS
AND REPORTS
ACHIEVE
COMPLIANCE

10. Barracuda Web Application Firewall Benefits
GAIN VISIBILITY VIA LOGS AND REPORTS
• Web firewall logs
• Audit logs
• Access logs
• Traffic / attack reports
SECURE
WEB
APPLICATIONS
SCALE UP
AND
SPEED UP
GAIN VISIBIILITY
VIA LOGS
AND REPORTS
ACHIEVE
COMPLIANCE

11. Barracuda Web Application Firewall Benefits
ACHIEVE COMPLIANCE
• Role based access
• LDAP authentication
• PCI reports
• Audit reports
SECURE
WEB
APPLICATIONS
SCALE UP
AND
SPEED UP
GAIN VISIBIILITY
VIA LOGS
AND REPORTS
ACHIEVE
COMPLIANCE

12. Out of line as a one armed proxy
Typical Deployment
Inline between the network firewall and the servers in Proxy or Bridge mode
Both these deployments can be put in High Availability set up with two units in a pair
Out of line as a one armed proxy

13. Summary Comprehensive Web application protection
Application delivery and acceleration
Authentication and Authorization
Logging, monitoring and reporting
Achieve compliance: PCI, HIPAA, GLBA 13