What is the proper ingress processing sequence for firewall filters on an EX Series switch?

The proper ingress processing sequence for firewall filters on an EX Series switch starts with the port filter, followed by the VLAN filter, and finally the router filter. This sequence reflects how traffic is processed through the layers of the switch.

Initially, incoming packets are examined at the port level. This means that the first set of rules applied is defined by the port filter, which allows or denies traffic based on the specific port the packet is entering the switch. This control mechanism is critical in managing access on a more granular, port-by-port basis.

Once the port filters have been processed, the remaining packets are subjected to VLAN filters. This filtering stage considers the VLAN (Virtual Local Area Network) associated with the incoming packets. It provides another layer of security and traffic management by applying rules that pertain specifically to traffic within a given VLAN.

Finally, the router filter applies to packets that are routed through the switch, ensuring that any IP-based filtering can occur after the traffic has been categorized and managed by the previous layers. This sequence allows for a highly organized method of traffic management, ensuring that each filter layer serves its purpose optimally, thus enhancing network security and efficiency.

This refined order of processing is essential for understanding how to effectively implement firewall filters on EX Series switches