Business Analysis : Barracuda Network

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BARRACUDA NETWORKS specialize in the balancing of traffic across multiple ISP links to ensure Internet continuity and availability, even during ISP outages. It balances both outbound and inbound traffic intelligently, so users have Internet access whenever they need it. The company has in place Application prioritization and granular quality-of-service (QoS) policies assure priority to business-critical application traffic – and the applications remain available even when links fail. This deploys quickly and transparently into existing networks without changes to configuration or topology. Secure and affordable, the Barracuda Link Balancer streamlines bandwidth management while providing maximum Internet access. Efficiency…show more content…
Link Any topic (writer 's choice)3 Failover and Failback Link availability and performance is continuously monitored using multiple protocols and metrics like DNS, Ping, HTTP, and performance. When link failure or saturation is detected, the Barracuda Link Balancer instantly reroutes traffic through the available links. It automatically fails back when the ISP restores service. During link failover/failback, the Barracuda Link Balancer maintains application traffic and VPN priorities. Inbound Link Balancing Using DNS Inbound link balancing distributes incoming traffic from Internet-facing services across multiple ISP links by using built-in Authoritative DNS services. It assigns link-specific IP addresses to each domain and then balances DNS queries to that domain across the available links. Failed links are removed from the DNS tables and are added back only when they have been restored. Transparent Deployment Under the preferred transparent mode of deployment, the Barracuda Link Balancer plugs into an existing network to perform link load balancing transparently, without requiring any changes on network firewalls, routers, VPNs, or hosts. Site-to-Site IPsec VPN For secure site-to-site connectivity, the Barracuda Link Balancer comes with a built-in IPsec VPN gateway. In case of link failover and failback, VPNs fail over to available links and maintain traffic priorities to ensure uptime for critical organizational services across the WAN. MPLS links

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