Site-to-site VPN

Business use leased lines to connect the headquarters (HQ) and branch offices together as an Intranet to share data, and to use VoIP and Video conferencing.

Due to the high cost of leased lines, site-to-site VPN is widely used as replacement to connect HQ and branch offices over Wide Area Network (WAN). This spans large geographic areas, and allows branch users to access resources at HQ as if they were at HQ. Although Site-to-site VPN offers same connectivity as leased line without compromising much quality, it has a few challenges to meet in the business world.


The Multi-Path VPN (MPV) of Q-Balancer is its unique technology to handle VPN traffic for site-to-site network. MPV is terminated on Q-Balancer at both ends. With the technology of MPV, there is no need to change VPN configuration when Q-Balancer is installed in Site-to-site VPN network. In the event of link failure Q-Balancer is able to instantly detect it and seamlessly failover VPN traffic to remaining active MPV links.


Q-Balancer aggregates VPN traffic by fragmenting connection into packets, distributing them across multiple WAN links, and then sending them to its counterpart. Speed and also network security are enhanced because the entire connections are chopped into multiple packets and distributed onto multiple ISP links.

Dynamic IP

VPN Resilience and Bonding can be achieved even though Q-Balancer is on dynamic or private IP. As long as the Q-Balancer at HQ is on public IP, the MPV tunnel can be established to failover and load balance Site-to-site VPN traffic.

Complex configuration

There is no change on legacy VPN network in terms of Q-Balancer installation. Once Q-Balancer is in place, users can then transparently and incrementally add more WAN links to the site-to-site VPN network as demand grows.