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Barracuda Link BalancerLink Reliability and Bandwidth Optimization
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Introduction• Provides Internet WAN and link load balancing
– Easily distribute traffic among multiple links to the Internet
– Connect DSL, Cable, T1/T3s to the same or different ISPs
– Plugs into existing network infrastructure
– Supports up to 6 Internet links
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Challenges• Single Internet link (Leased T1/T3)
• Bandwidth is expensive• If ISP link is down, Internet is down• Low service reliability• User productivity loss• Adding Bandwidth without intelligent management is ineffective
corporate network • Requirement
• Aggregate Internet links (cable, xDSL) • Not bound to a single Internet connection• Maximize link throughput• Increase service reliability • Maximize user productivity• Optimize Bandwidth utilization
ISP ISP ISP
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Barracuda Link Balancer FeaturesDeployment
• Web based configuration
• Deployed stand-alone or with existing Firewall
Link balancing• Internet connection balancing
• Internet link health checking and failover
• Link speed assignment/dynamic link speed support
• Inbound Link Balancing and failover through Authoritative DNS
Security• DDOS protection
• Traditional Firewall capabilities like ACL, 1:1 NAT, Port Forwarding
Bandwidth management• Bandwidth Monitoring
• Quality of Service (QoS) control to prioritize application bandwidth
Network services• Site-to-site VPN
• DHCP, DNS caching services
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Barracuda Link Balancer Benefits
AGGREGATESMULTIPLE INTERNET LINKS
IMPLEMENTSPERIMETER SECURITY
ENABLESTRANSPARENTINTERNET LINKFAILOVER
MANAGESBANDWIDTH
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Barracuda Link Balancer Benefits
AGGREGATESMULTIPLE INTERNET LINKS
IMPLEMENTSPERIMETER SECURITY
ENABLESTRANSPARENTINTERNET LINKFAILOVER
MANAGESBANDWIDTH
AGGREGATES MULTIPLE INTERNET LINKS
• Use multiple cable / xDSL in place of T1 / T3
• Link Balancing
• Decrease network down-time
• Save money
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Barracuda Link Balancer Benefits
AGGREGATESMULTIPLE INTERNET LINKS
IMPLEMENTSPERIMETER SECURITY
ENABLESTRANSPARENTINTERNET LINKFAILOVER
MANAGESBANDWIDTH
IMPLEMENTS PERIMETER SECURITY
• Protect against DDOS attacks
• Traditional firewall capabilities
• Site-to-site VPN
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Barracuda Link Balancer Benefits
AGGREGATESMULTIPLE INTERNET LINKS
IMPLEMENTSPERIMETER SECURITY
ENABLESTRANSPARENTINTERNET LINKFAILOVER
MANAGESBANDWIDTH
ENABLES TRANSPARENT INTERNET LINK FAILOVER
• Use multiple service providers
• 100% Internet uptime
• High customer / user satisfaction
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Barracuda Link Balancer Benefits
AGGREGATESMULTIPLE INTERNET LINKS
IMPLEMENTSPERIMETER SECURITY
ENABLESTRANSPARENTINTERNET LINKFAILOVER
MANAGESBANDWIDTH
MANAGES BANDWIDTH
• Prioritize bandwidth usage
• Block or limit bandwidth for specific applications
• Assign links for applications
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• Ethernet Bypass and High Availability options avoid single point of failure
Deployment modes• Replace existing Firewall
– Provide default gateway– Simple firewall, port
forwarding and NAT rules– Local network services,
such as DHCP and DNS
• Transparently with existing firewall
– Pass through VPN tunnels– No need to modify existing
firewall rules– Turns existing edge
network device’s WAN link to High Availability
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Model ComparisonFeature 230 330 430
Internet Link Connections 2 3 7
Link Balancing
Link Health Checking
Link Failover
Traffic Aggregation
Network Traffic Firewall
Local DHCP and DNS
Traffic Monitoring
SNMP
Site-to-Site VPN
Bandwidth Management and QoS
Ethernet Bypass
Clustering/High Availability
Customizable Branding
API
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Immediate Return on InvestmentMonthly prices of DSL vs. Leased lines
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