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L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers Vulnerability Note VU#855201 Original Release Date: 2022-09-27 | Last Revised: 2023-06-14 Overview Layer-2 (L2) network security controls provided by various devices, such as switches, routers, and operating systems, can be bypassed by stacking Ethernet protocol headers. An attacker can send crafted packets thr
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