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Buffered Ethernet Tee

Discussion in 'Beginner Electronics' started by Nick Name, Jan 14, 2010.

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  1. Nick Name

    Nick Name Guest

    Is anyone aware of a project/diy brew to build an active, buffered
    Ethernet Tap that would only require a single NIC in the sniffing PC?

    I'm currently using a couple of NIC's and a passive tap listening to the
    xmit lines in both directions, but I'm thinking there must be some kind
    of way to do a 'cheap' home brew 'mirror' of some kind?

    Any pointers welcome. Thanks. Nick
  2. Jasen Betts

    Jasen Betts Guest

    use a hub (if you can still find one)

    (assuming you are only interested in IP traffic) you don't need two
    interfaces to route packets between subnets.
    how do you plan to handle full duplex mode when listening with a
    single NIC.

    --- news:// - complaints: ---
  3. Jasen Betts

    Jasen Betts Guest

    if both ends are sending at the same time you need to either hardware
    that can 'store and forward' packets, force the system to use half
    duplex mode (eg, by using a hub instead of a switch), or run two ethernet
    interfaces to listen.

    --- news:// - complaints: ---
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