Cisco
100-160 · Question #56
100-160 Question #56: Real Exam Question with Answer & Explanation
The correct answer is B. An ACL. ACLs can prevent spoofing by dropping traffic from external sources that claim to have an internal source address. Configuring ACLs on the perimeter firewall or router is a common countermeasure for IP spoofing.
Question
What should you create to prevent spoofing of the internal network?
Options
- AA NAT rule
- BAn ACL
- CA record in the host file
- DA DNS record
Explanation
ACLs can prevent spoofing by dropping traffic from external sources that claim to have an internal source address. Configuring ACLs on the perimeter firewall or router is a common countermeasure for IP spoofing.
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