You are planning to implement uRPF as the first line of defense on a Cisco IOS router that connects your company to the internet. Which type of uRPF validates the existence of the source network of the packet in the routing table while providing a method to drop packets from unknown and therefore invalid networks?strict uRPFloose uRPFinvalid uRPFnetwork uRPF
Question
You are planning to implement uRPF as the first line of defense on a Cisco IOS router that connects your company to the internet. Which type of uRPF validates the existence of the source network of the packet in the routing table while providing a method to drop packets from unknown and therefore invalid networks?strict uRPFloose uRPFinvalid uRPFnetwork uRPF
Solution
The type of uRPF that validates the existence of the source network of the packet in the routing table while providing a method to drop packets from unknown and therefore invalid networks is loose uRPF. Loose uRPF checks if any route in the routing table matches the source IP address of the packet. If there is a match, the packet is forwarded. If there is no match, the packet is dropped. This helps to prevent IP spoofing attacks.
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