Which three statements are correct about the processing order of firewall filters on a Junos device?

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Multiple Choice

Which three statements are correct about the processing order of firewall filters on a Junos device?

The choice stating that the egress processing order is router, VLAN, port is accurate because it reflects how traffic is handled as it leaves an interface on a Junos device. Specifically, when packets exit the device, they are first evaluated against any router-based firewall filters that might be applied. After passing through these filters, the packets are then subjected to VLAN filters, followed lastly by any port filters that may apply. This sequential approach ensures that the most general filtering (router-based) occurs before the more specific filtering (port-based), allowing for a structured and hierarchical processing of packets. This order is essential for administrators to understand when configuring firewall filters, as it affects which filters will be applied and in what sequence when traffic is processed. Recognizing this order improves their ability to troubleshoot and optimize packet filtering effectively in their network setups.

The choice stating that the egress processing order is router, VLAN, port is accurate because it reflects how traffic is handled as it leaves an interface on a Junos device. Specifically, when packets exit the device, they are first evaluated against any router-based firewall filters that might be applied. After passing through these filters, the packets are then subjected to VLAN filters, followed lastly by any port filters that may apply. This sequential approach ensures that the most general filtering (router-based) occurs before the more specific filtering (port-based), allowing for a structured and hierarchical processing of packets.

This order is essential for administrators to understand when configuring firewall filters, as it affects which filters will be applied and in what sequence when traffic is processed. Recognizing this order improves their ability to troubleshoot and optimize packet filtering effectively in their network setups.

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