What Is It With 192.168 And Private Networks?

Discussion in 'Wireless Networks' started by (PeteCresswell), Jan 24, 2011.

  1. Is there a reason why I can't make my private network addresses
    10.0.0.x?

    I note that Apple's "AirPort" defaults to a "10" series address.

    After reading http://en.wikipedia.org/wiki/Private_network I come
    away thinking that 10.x is a "Single Class A" network... but I
    can't figure out what the implications are.
     
    (PeteCresswell), Jan 24, 2011
    #1
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  2. (PeteCresswell)

    Brian Cryer Guest

    Yes, you can use 10.0.0.x for your private network.

    You can use anything in the range:
    10.x.x.x
    172.16.x.x-172.31.x.x
    192.168.x.x

    I've worked in both the 19 and 192 range for private networks. Never
    seen the 172 one use, but I'm sure its used somewhere.

    Most domestic routers come pre-configured assuming 192.168.x.x, but
    there is no reason you can't use 10.0.0.x if you want to. This shouldn't
    cause you any problems because its a range defined for the use of
    private networks.

    As for the 10.x.x.x being a class A network, that simply refers to the
    address range - in this case 10.x.x.x. If you want to use 10.0.0.x you
    are simply using part of that address range. No problem there.

    Hope this helps.
     
    Brian Cryer, Jan 25, 2011
    #2
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  3. Per Brian Cryer:
    Thanks. Did the deed last nite.

    Even smoked out a couple of devices with self-set IP addrs in the
    process.

    I was just a little leery of the "Class A" qualification....
     
    (PeteCresswell), Jan 25, 2011
    #3
  4. I would be reluctant to apply a netmask of 255.0.0.0 to my home 10.x.x.x
    network; after all, I don't expect to need 16,777,216 nodes on my
    network. Instead, I use 10.0.0.x with a netmask of 255.255.255.0.

    Using the Class A network 10.x.x.x may also introduce routing problems
    where ISPs use that range for their internal routing, a practice common
    with 3G cellular internet providers.
     
    Michael Bednarek, Jan 27, 2011
    #4
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