Routerless Broadband ICS

Discussion in 'A+ Certification' started by Dave Hardenbrook, Oct 12, 2007.

  1. Is it possible to share a broadband Internet connection bewteen multiple
    PCs, without a hub/router, but in a manner analogous to sharing a dial-
    up connection, by replacing the dial-up modem with a second NIC in one
    system, something like this?:

    ....................../-First PC-\......./-2nd PC
    Cable/DSL modem --> [] [] --> []
    .................. 1st NIC....2nd NIC...NIC in 2nd PC


    Dave
    Dave Hardenbrook, Oct 12, 2007
    #1
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  2. Dave Hardenbrook wrote:
    > Is it possible to share a broadband Internet connection between multiple
    > PCs, without a hub/router, but in a manner analogous to sharing a dial-
    > up connection, by replacing the dial-up modem with a second NIC in one
    > system, something like this?:
    >
    > ...................../-First PC-\......./-2nd PC
    > Cable/DSL modem --> [] [] --> []
    > ................. 1st NIC....2nd NIC...NIC in 2nd PC


    What you are describing above is called Internet Connection Sharing by
    Microsoft. ICS has been is all MS O/S's since Windows 98 Second Edition.

    Depending on the kinds of NIC's you have facing each other (NIC2 of PC1
    to NIC in PC2) you may need an ethernet crossover cable.

    The advantage is that you don't need the $30.00 router.

    The disadvantage is that PC1 needs to be on all the time and anytime PC2
    wants to access the Internet. Also, PC1 is now exposed to the Internet
    and needs to be properly protected, Windows XP's built in Firewall is
    insufficient all by itself.

    While what you are proposing will work, my question is - WHY?

    Routers are so cheap and so darned reliable plus they provide that first
    line of defense against all the nasties out there on the Internet.

    John
    --
    John Dearing
    A+, Network+, Server+
    To Reply, just drop "yourpants" from my address! :cool:
    John P. Dearing, Oct 12, 2007
    #2
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  3. Dave Hardenbrook

    Mister Guest

    I could give an answer equivalent to what you would hear from the show
    "The Big Bang Theory", but I have to agree with Watzman and Dearing on
    this one.


    On Fri, 12 Oct 2007 22:08:08 -0400, Barry Watzman
    <> wrote:

    >Yes, but what you are really doing is running router software in the 1st
    >PC. Also, in most cases, all PCs connect to the 1st PC (hub like rather
    >than "daisy chain" like), although it could be done both ways.
    >
    >That said, first, you can get a hub or switch for $10. Second, what you
    >really want is a router, not so much for sharing but for security, and
    >you can get routers for about $20-$30.
    >
    >The trouble you would go to in avoiding a switch / hub / router not only
    >isn't worth it, it's going to give you a vastly inferior configuration,
    >although it is possible and it will work.
    >
    >
    >Dave Hardenbrook wrote:
    >> Is it possible to share a broadband Internet connection bewteen multiple
    >> PCs, without a hub/router, but in a manner analogous to sharing a dial-
    >> up connection, by replacing the dial-up modem with a second NIC in one
    >> system, something like this?:
    >>
    >> ...................../-First PC-\......./-2nd PC
    >> Cable/DSL modem --> [] [] --> []
    >> ................. 1st NIC....2nd NIC...NIC in 2nd PC
    >>
    >>
    >> Dave
    >>
    Mister, Oct 13, 2007
    #3
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