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From: Lindqvist, Johan (johan.lindqvistDRIFTBOLAGET.COM)
Date: Tue Feb 06 2001 - 10:48:45 CST

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    Hi.

    > Actually, sniffing isnt' that heard either. There are
    > several ways to do
    > it such as making the switch you are a trunk port and you need all the
    > traffic. In order words, don't put a switch and VLANs in
    > place and expect
    > that to be your security because they can be defeated.

    As for switching, I'm fully aware that it's not a security mechanism that
    cannot be defeated easily. However that VLANs have no security impact is
    news to me. Since VLANS are defined on physical switch port basis, how could
    they be used to receive or send traffic on other VLANs?

    /Johan 

    -- 
Johan Lindqvist
Security Specialist

    DRIFTBOLAGET AB, MÖLNDALSVÄGEN 81, 412 63 GÖTEBORG, SWEDEN
PHONE: +46 8-23 92 00 FAX: +46 709-73 46 70
DIRECT: +46 31-760 43 07 MOBILE: +46 709-73 87 07 
johan.lindqvistdriftbolaget.com http://www.driftbolaget.com