Barracuda Link Balancer Cost-Effective Network Performance and Availability Version 2.5 | July 2014

Features ISP Link Management Services Inbound and outbound link balancing Intelligent link failover and failback QoS/bandwidth shaping Services Site-to-site VPN Authoritative DNS DHCP

Common Internet Link/ISP Challenges Increase Internet bandwidth cost effectively Avoid link saturation or overflow during flash traffic Protect against ISP outages and link failures For outbound traffic to Internet For inbound traffic to Services like Web and Email Avoid traffic bottlenecks Critical applications should respond quickly De-prioritize bulk/non-critical traffic ISP

ISP Outages: 30% of downtime Threats Storms Fires Power Outages Hacktivists DDoS Cable damage Router Failure Backbone Failure Business Disputes Human Error

Traditional Solutions: Costly and Ineffective Pitfalls Add bandwidth to existing line Expensive No Redundancy Bandwidth oversubscription Add backup line to firewall / router Limited failover and health checking No inbound redundancy Inefficient link utilization Zero RoI unless backup links are used BGP multi-homing with 2 ISPs Expensive and complex routing No Intelligent link routing Long, unpredictable failover times Needs special ASNs ($$) from ISPs Lacking: Automatic link monitoring Intelligent traffic distribution Application prioritization They want to increase bandwidth as well as reliability without having to pay for expensive backup T1 lines and complex technology like BGP multi-homing. Solution should intelligently balance the traffic on the links to avoid saturation of a single link, something they might have tried and failed to do by adding ISP links to their routers.

Solution: Barracuda Link Balancer Provides Internet WAN and link balancing Easily distribute traffic among multiple links to the Internet Supports any combination of DSL, Cable, T1/T3, PPPoE and MPLS Networks Plugs easily into existing network infrastructure Supports up to 7 Internet links 6

Outbound Link Balancing DNS Corporate LAN Barracuda Link Balancer Internet ERP, VOIP, Web, Email

Barracuda Link Balancer Main Features Link Load Balancing Intelligent load distribution across links from one or more ISPs Multiple link load balancing algorithms to distribute traffic based on policies Intelligent Link Monitoring and Failover/Failback Continuously monitors link availability and performance using multiple criteria Maintain traffic priorities by instantly rerouting traffic on link failure/saturation High Availability Ethernet Bypass and High Availability options Traditional Firewall Functions NAT, PAT, IP Access Lists, Port Forwarding, DHCP service

Differentiating Features Inbound link load balancing using authoritative DNS Domain services are served from multiple WAN links with link-specific IP Failed links automatically removed from DNS tables Application-aware bandwidth management across multiple links Prevent abuse, optimize bandwidth QoS policies by multiple categories VPN failover and failback VPNs fail over to available links and maintain traffic priorities Automatic MPLS to VPN failback Transparent “Drop-in” deployment mode “Plug and Play” without changes to firewalls, VPNs, hosts and gateways For example, VoIP and ERP traffic can be reserved for fast MPLS lines, while email is shunted to slower T1 links

Inbound Link Balancing using ADNS Comcast WAN1 IP1 Verizon WAN2 IP3 AT&T WAN3 IP2 IP2 DNS IP1 IP1 IP3 IP2 Barracuda Link Balancer ERP, VOIP, Web, Email Services IP3 Internet Note to presenter: Just click the slide once for the animation to play out. Then talk through how the link balancer uses DNS to achieve inbound link balancing for all your services – Email, Web, VOIP, etc Built-in Authoritative DNS module splits incoming load across links. Achieves inbound link load balancing as well as failover. Ensures 24x7 services uptime

ROI: Replacing T1 with 2 x DSL Original – 2 x T1 Cost 2 x $500 = $1000/mo Bandwidth = 3 Mbps Replace 1 x T1 with 2 x DSL (6 Mbps each) DSL Cost = $75/mo for 6Mb Total Cost = $500 + 2 x $75 = $650/mo Retain 1 x T1 for website & site-to-site Save ~$350 per-month! $$ Payback Period: 6 – 12 months Barracuda Link Balancer DSL T1 T1 Approx 200 users in Branch office Pair of bonded T1’s (3Mb/sec) Links regularly saturated No redundancy to Internet / HQ

Immediate Return on Investment

Barracuda Link Balancer Models Feature / Model 230 330 430 Internet Link Connections 2 x GbE 3 x GbE 7 x GbE Throughput 150 Mbps 300 Mbps 550 Mbps Link Balancing  Link Health Checking Link Failover Network Traffic Firewall Local DHCP and DNS SNMP Site-to-Site VPN Bandwidth Management and QoS Ethernet Bypass / HA Live and Historical Reporting https://www.barracuda.com/products/linkbalancer Product Page: https://www.barracuda.com/products/linkbalancer

Why Barracuda? Mature link load balancer Easy-to-use, comprehensive feature set Flexible deployment options Customer support Excellence Award (SC Magazine, 2013 and 2014) Thousand of satisfied customers worldwide

Benefits Summary No need to replace/reconfigure existing firewall No longer hostage to an ISP Guaranteed availability without delays or misrouting Aggregate inexpensive links Granular control for link optimization Support for DSL, Cable, T1/T3 and MPLS High availability of services across multiple WANs

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