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Episode 155: Dynamic ARP Inspection, DHCP Snooping, and Control Plane Policing
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Jason Edwards에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 Jason Edwards 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
Advanced network protection mechanisms focus on securing internal traffic and device behavior. This episode introduces three such features: Dynamic ARP Inspection (DAI), DHCP Snooping, and Control Plane Policing (CoPP). DAI helps detect and block ARP spoofing attempts by validating ARP packets against known trusted entries. This is especially important in VLAN-segmented environments where one compromised host can poison entire segments.
Next, we cover DHCP Snooping, which prevents rogue DHCP servers from assigning false IP configurations by limiting DHCP responses to trusted ports. Lastly, we explain CoPP—a method of rate-limiting traffic directed at the control plane to protect CPUs from overload during attacks. Together, these technologies form a powerful triad of internal protection. This episode helps you move beyond basic firewalling and into granular switch and router defenses.
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