What is the recommended action for incoming ARP requests in a firewall policy?

Allowing incoming ARP requests in a firewall policy is recommended because ARP (Address Resolution Protocol) is a fundamental protocol used for resolving IP addresses into MAC addresses within a local network. Proper functioning of an IP-based network relies on ARP for communication between devices. Blocking or denying ARP requests could prevent devices from communicating effectively, leading to network failures or disruption of services.

While logging incoming ARP requests may provide visibility into ARP traffic, it does not actively ensure that devices can communicate as needed. Similarly, dropping ARP requests would create connectivity issues, and denying them would hinder the normal operations of the network. Allowing these requests enables the necessary resolution processes for network communications to occur seamlessly. This is crucial for maintaining the efficiency and functionality of the network infrastructure.