Q-Balancer Mesh
Q-Balancer 150
Q-Balancer 300D
Q-Balancer 300
Q-Balancer 500
Q-Balancer 2000

Ensuring Incoming Requests to Internal Servers
Each host connected to the Internet has a unique IP address, with which the other devices can therefore find it. In reality, users access online information through human-readable domain names, like google.com or yahoo.com rather than IP address. The Domain Name Systems (DNS) helps convert domain names into IP addresses. It is like the phonebook of the Internet. When a DNS request is received by a DNS server, the DNS server then returns with the IP address of the domain name requested. DNS translates domain names to IP addresses, while web browsers interact with web servers through the IP addresses.

However, incoming requests would possibly not be able to access the hosted servers in case of link failure as DNS is not able to detect WAN outages or congestion.

>  Inbound Failover & Load Balancing

Inbound Failover & Load Balancing

Connecting multiple WAN links and taking turn to reply DNS queries with IP addresses from different WAN links can possibly mitigate the issue. By doing so, the hosted servers then appear as a different IP address to each of the incoming DNS queries. However, there are still possibility to reply DNS queries with IP addresses from the faulty or congested WAN link.

Q-Balancer constantly checks the link status, and dynamically removes bad link(s) from its DNS table. It avoids the IP addresses from faulty or congested link(s) when replying DNS queries. Therefore, incoming requests are always directed to best-performing path or efficiently distributed across the highly available paths. This highly improves the availability and response of hosted services to incoming requests. 

Q-Balancer is the best-in-class inbound load balancing solutions, and has been successfully deployed by lots of heavy-traffic enterprises in the world. 

Top Benefits
>  Avoiding service downtime caused by network outages and even during regular network maintenance.

>  Maximizing uplink utilization without complex configuration.
>  Improved response times and availability for incoming requests.
>  Flexibility to control WAN access for hosted applications.