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  1. #1
    Linux User
    Join Date
    May 2003

    2 network cards or one?

    i hv a general simulate a NAT kind of a network on a linux box, do I need 2 physical ethernet cards or can I just configure 2 virtual ip's on one card and redirect traffic on them depending upon the routes?
    Fixing Unix is better than working with Windows.

  2. #2
    Linux Guru
    Join Date
    Oct 2001
    Täby, Sweden
    That's certainly possible. While it is possible to do it with one NIC, it's certainly not recommendable, since it makes a lot of things a bit complicated, and is also a bottleneck.

    As for actually configuring it, check the docs on, or one of the countless HOWTOs on the subject on

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