CIDR Explanation

From: ka55ad (ka55ad_at_gmail.com)
Date: 09/20/04

  • Next message: GuidoZ: "Re: learning ethical hacking" 
    Date: Mon, 20 Sep 2004 09:39:29 -0400
To: security-basics@securityfocus.com

    Hi List,

         I am hoping that somebody might be able to help me out or point
    me in the right direction. For the life of me I can't seem to get a
    good grasp on CIDR notation. I see a lot of CIDR addresses every day,
    but I have trouble figuring out the IP addresses on the fly. I am not
    a complete newbie - I am quite familiar with the OSI model, TCP
    handshakes, etc but this one area stumps me.

         I am particularly interested in it because I am going to be
    setting up a snort box soon as well as an IP chains firewall to
    segregate parts of the network. I would much rather use CIDR since it
    can be much quicker at times, but I don't want to use it right now due
    to my lack of knowledge which can cause security issues. Can anybody
    offer advice/help? Thanks.

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