RE: Questions about 192.168

From: Ethan (ethan_at_sliver.truthbi.com)
Date: 07/08/03

  • Next message: Chris Ess: "Re: Top 10 (secure) programs" 
    To: <security-basics@securityfocus.com>
Date: Tue, 8 Jul 2003 13:49:06 -0700

    >As mentioned above, the class "B" 192.168.xxx.yyy IPs and class "A"
    10.xxx.yyy.zzz IPs (as >well as a class "C" set of IP addresses) are not
    routeable.

    Just to clarify, 192.168 is the private class C address space. The
    class B address space is actually 172.16. From RFC1918:

    "The Internet Assigned Numbers Authority (IANA) has reserved the
    following three blocks of the IP address space for private internets:

         10.0.0.0 - 10.255.255.255 (10/8 prefix)
         172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
         192.168.0.0 - 192.168.255.255 (192.168/16 prefix) "

    -Ethan

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