Re: testing for IP address space leakage in NAT systems

From: Thomas Reinke (reinke@e-softinc.com)
Date: Mon Jan 21 2002 - 13:50:53 PST

  • Next message: Gamble: "Re: testing for IP address space leakage in NAT systems"

    Not reliable, but if there are any accessible web servers
    behind the NAT device, check the Content-Location tag. It
    may yield non-routable address information.
    
    Statistically, not a good bet - but still, a better than
    1 in 20 chance, if the server is IIS, that you will get
    non-routable addressing information out of it, and that
    the server is giving this information to everyone who
    connects to it.
    (See
    http://www.securityspace.com/s_survey/data/man.200112/firewalled_cloc.html
    for stats breakdown)
    
    Thomas
    
    R P G wrote:
    > 
    > I was wondering if anyone knows of a method to test a NAT system for
    > address space leakage.
    > 
    > Thanks.
    > 
    > --Bob
    > 
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