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Episode 149: VLAN Hopping and Layer 2 Exploits
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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.
VLANs offer segmentation—but they’re not invulnerable. In this episode, we look at how attackers can bypass VLAN boundaries using VLAN hopping techniques like double-tagging and switch spoofing. You’ll learn how misconfigured trunk ports, native VLANs, and default switch behaviors create opportunities for unauthorized access between VLANs.
We also explore other Layer 2 vulnerabilities, including MAC flooding and CAM table exhaustion, which can disrupt switch behavior or enable packet sniffing. The episode includes hardening tips like disabling unused ports, setting the native VLAN to an unused ID, and restricting VLAN access to known interfaces. This is essential material for defending against internal threats and securing your switch infrastructure.
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