Which MAC-IP Anti-Spoof network setting prevents spoofing of egress packets?

The correct answer emphasizes the role of ARP Lock in enhancing security within a network by preventing the spoofing of egress packets. When ARP Lock is enabled, it binds IP addresses to specific MAC addresses, ensuring that any outgoing packets that do not match the allowed MAC address for a given IP address are dropped. This effectively mitigates the risk of attackers attempting to send packets from a different MAC address to impersonate legitimate devices on the network.

By enforcing strict adherence to the specified pairs of MAC and IP addresses, ARP Lock preserves the integrity of the egress communication. This is particularly important in environments where secure data transmission is critical, as it stops malicious users from hijacking sessions or redirecting traffic intended for different devices.

In contrast, ARP Filtering focuses on controlling which ARP packets are allowed through the firewall but does not specifically lock down MAC-IP relationships in the same way ARP Lock does. Packet Inspection is more focused on analyzing the contents of packets for unauthorized or harmful data, rather than enforcing MAC-IP binding rules. Traffic Shaping, on the other hand, is concerned with regulating bandwidth and network performance rather than security against packet spoofing. By understanding these distinctions, it's clear why ARP Lock is the most effective option for preventing