Layer 2 Security - Cisco

2006 Cisco Systems, Inc. All rights PublicLayer 2 SecurityEric VynckeDistinguished Consulting Engineer 2006 Cisco Systems, Inc. All rights PublicSEC-2062 Caveats All attacks and mitigation techniques assume a switched Ethernetnetwork running IPv4 All testing was done on Cisco Ethernet SwitchesEthernet switching attack resilience varies widely from vendor to vendor This is not a comprehensive talk on configuring Ethernet switches for Security or NAC or IEEE : the focus is mostly access L2 attacks and their mitigation 2006 Cisco Systems, Inc. All rights PublicSEC-2063 Agenda Layer 2 Attack Landscape Attacks and Counter MeasuresMAC AttacksDHCP AttacksARP AttacksSpoofing AttacksGeneral Attacks Summary 2006 Cisco Systems, Inc. All rights PublicSEC-2064 OSI Was Built to Allow Different Layers to Work Without the Knowledge of Each OtherWhy Worry About Layer 2 Security ?

Unfortunately this means if one layer is hacked, communications are compromised without the other layers being aware of the problem Security is only as strong as the weakest link When it comes to networking, layer 2 can be a very weak link MAC Addresses Application Stream Application Presentation Session Transport Network Data Link Physical ...

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  Security, Cisco, Physical, Early, Layer 2 security

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