Re: Identifying whether 2 IPs are from the same server

From: Terry Vernon (tvernon24_at_comcast.net)
Date: 11/25/05

  • Next message: Richard Zaluski: "Password cracking / recovery Lotus Notes R6" 
    Date: Thu, 24 Nov 2005 23:49:34 -0600
To: BSK <bishan4u@yahoo.co.uk>

    Try flooding one while watching the turnaround time on a ping to the
    other one. If it is the same machine, the flood might occupy the network
    stack and cause latency in the ping time from it's second IP. There are
    situations where this might give you a false positive such as two
    identical machines on an unswitched ethernet where the flood would
    naturally slow the response of the second machine. It's not a perfect
    plan but right off the top of my head that's an option. You can also use
    nmap to scan it and hope the machines reveal their uptimes, if the
    uptimes are identical then it could be the same machine or the admin
    gets off on synchronizing the power on his servers lol.

    If you were more explicit about which sockets were in use then you can
    enumerate the two by looking at static files on the machines (web, anon
    ftp, etc). If you can find two identical folders on each IP through
    apache that doesn't have an index.html file you can compare the
    timestamps on the contents of both folders. There's a bunch of little
    things you can do.

    I'm willing to bet 'nmap -O -p 0-1024 hostname' will tell you what you
    need to know

    -Terry

    BSK wrote:

    >Hello,
    >
    >I am doing a Penetration Testing for 2 IP addresses.
    >My findings till now for both the servers are exactly
    >same. I strongly feel that both the IPs belong to the
    >same machine. May be a scenario where two NICs are on
    >the same machine with two Public IPs. I ran HPING to
    >match their IP IDs but it shows different series for
    >both of them.
    >
    >Is there any other technique that we can use to
    >ascertain such a situation?
    >
    >thank you
    >
    >
    >
    >
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    Hackers are concentrating their efforts on attacking applications on your
    website. Up to 75% of cyber attacks are launched on shopping carts, forms,
    login pages, dynamic content etc. Firewalls, SSL and locked-down servers are
    futile against web application hacking. Check your website for vulnerabilities
    to SQL injection, Cross site scripting and other web attacks before hackers do!
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  • Next message: Richard Zaluski: "Password cracking / recovery Lotus Notes R6"

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