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  1. Junior Member Registered Member
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    Jan 2012
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    #1

    Default l2 switch operation - security ACL

    hi dears,

    right now I am preparing for switch exam and concrete I don't know how is possible that L2 switch may to performed some checking (security ACLs) on layer3 and layer4? How is this possible omg, that's L2 switch...


    from switch book:
    security ACLs—Access control lists (ACL) can be used to identify frames according to their MAC addresses, protocol types (for non-IP frames), IP addresses, protocols, and Layer 4 port numbers. The ternary content-addressable memory (TCAM) contains ACLs in a compiled form so that a decision can be made on whether to for-ward a frame in a single table lookup.

    Can someone explain me how it's possible.

    IMPORTANT:I am not talking about MLS I am talking about pure L2 switch.

    THANKS for replies.

    pepso
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  3. Registered Member Darril's Avatar
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    #2
    It sounds like you're talking about a Cisco switch exam. You may get a better response if you post your question in one of the Cisco forums.

    Darril Gibson
    Security+ blog
    Security+ Tip Of Day
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  4. Junior Member Registered Member
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    Jan 2012
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    #3
    can you pls be so kind and provide me with concrete URL ?

    I am trying to find some good CCNP/CCIE "live" forum...

    thanks.
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