SD-WAN Rule in FortiGate Firewall

In Fortigate firewalls, an SD-WAN rule is used to define the behavior of traffic that matches a particular set of criteria. 

SD-WAN rules are used to route traffic across multiple WAN links based on different criteria such as application type, source or destination address, and QoS requirements.

An SD-WAN rule consists of several components:

Source and destination - the IP address or subnet that the rule applies to.

Application - the type of traffic that the rule applies to. This could be a specific application or a group of applications.

Quality of Service (QoS) - the level of priority that the traffic is assigned. This could include bandwidth, latency, and packet loss requirements.

Link selection - the criteria for selecting the WAN link that the traffic should be routed through. This could include load balancing, link prioritization, and failover.

Policy sequence - the order in which the rule is evaluated relative to other rules.

SD-WAN rules can be used to implement complex traffic routing policies that take into account multiple factors such as network performance, QoS requirements, and application traffic patterns. They provide administrators with the flexibility to route traffic across different WAN links based on their specific needs and requirements.

Overall, SD-WAN rules in Fortigate firewalls provide an important feature that helps organizations to optimize their WAN connectivity, improve application performance, and enhance network security.