You are configuring an infrastructure antispoofing ACL on the branch router that connects the branch office to the central location in your company. Which type of filtering should permit the valid IP addresses from the branch office as the source and deny everything else?ingress filteringegress filteringingress and egress filteringrouting protocols filtering
Question
You are configuring an infrastructure antispoofing ACL on the branch router that connects the branch office to the central location in your company. Which type of filtering should permit the valid IP addresses from the branch office as the source and deny everything else?ingress filteringegress filteringingress and egress filteringrouting protocols filtering
Solution
In this scenario, you should use ingress filtering. Ingress filtering is a method used to ensure that incoming packets are actually from the networks that they claim to be from. This is done by checking the source IP of the packet and verifying that it is valid for the network from which it was received. If the packet is from the branch office network, it is allowed in. If it is not from the branch office network, it is denied. This helps to prevent IP spoofing attacks.
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