The Hauts-de-Seine Departmental Council, the 2nd most populous department in Île-de-France. It employs 5,300 agents and its existing MPLS network no longer met the needs created by the adoption of new tools. The new uses developed within the community (collaborative tools, image and video banks, videoconferencing) required the consequent increase in speeds and made the economic equation complicated with MPLS.
SD-WAN has therefore emerged as an alternative to respond to the increase in speeds and service levels while reducing the cost of inter-site links. “The simplicity of the solution and the value for money were decisive in choosing Fortinet,” explains the manufacturer of the security appliances. From a single platform, the Fortinet Secure SD-WAN solution offers robust security, efficient routing and WAN optimization features. “
The Hauts-de-Seine Department therefore carried out a Proof of Concept on four of its remote sites in order to validate the different technical architectures and the proper functioning of the solution. Due to the disparity of sites and their needs, the solution had to respond to various use cases. Some of the sites were small with reduced needs such as Maternal Child Protection, others like multi-service social hubs or central sites had large needs, both in terms of bandwidth and latency.
“The results were beyond our expectations, whether in terms of ease of deployment (with the Zero Touch Deployment), centralized management via the FortiManager or even filtering and flow management functions”, comments Bertrand Peugnet, Infrastructure Manager of the Information Systems Department within the Evaluation, Organization and Methods Pole of the Hauts-de-Seine Department.
In 2020, the Hauts-de-Seine Department will deploy the solution across all of its administrative sites, or around 120 sites. It decentralizes its network and allows the local FortiGate of the remote site to manage the allocation of IP addresses (DHCP) of devices and users connected locally. In addition, the establishment of Fortinet’s Secure SD-WAN allows it to consider local internet escape (from the remote site) with the activation of web filtering, replacing its end-of-life web proxy. The benefit will be a reduction in the volume of traffic on the backbone, thereby improving overall network performance.