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Hello, I'm a surf-addict. Recently I came across a site: http://www.chami.com/tips/internet/041498I.html It showed the IP address alright, but also some additional info: IP Address: 202.63.165.254 Browser Signature: Mozilla/5.0 (X11; U; ...
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  1. #1
    Just Joined!
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    India
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    Information Leak!


    Hello,
    I'm a surf-addict. Recently I came across a site:
    http://www.chami.com/tips/internet/041498I.html

    It showed the IP address alright, but also some additional info:
    IP Address:
    202.63.165.254
    Browser Signature:
    Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

    I know abt the IP part and the browser, but how do i stop my browser from sending that extra data?? Also, i wanna put such a feature on my site. How do i do it??

    One more thing. I can spoof addresses while sending mails. But still my frendz can find out its me(my composition is perfect. Its not social engg). I think it must be thru IP. How do i spoof my IP address in outgoing mails? I'm on cablenet.

  2. #2
    Linux Engineer
    Join Date
    Nov 2004
    Location
    Montreal, Canada
    Posts
    1,267
    You cannot block this information from been sent, as it is part of the core of any browser.

    Here's a script that will work
    Code:
    <script>
    if &#40;document.all&#41;
    var version=/MSIE \d+.\d+/
    
    if &#40;!document.all&#41;
    document.write&#40;"You are using "+navigator.appName+" "+navigator.userAgent&#41;
    else
    document.write&#40;"You are using "+navigator.appName+" "+navigator.appVersion.match&#40;version&#41;&#41;
    </script>
    I think it must be thru IP. How do i spoof my IP address in outgoing mails? I'm on cablenet.
    Not quite sure what you meen?
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  3. #3
    Linux Enthusiast
    Join Date
    Feb 2005
    Location
    SE, Stockholm
    Posts
    512

    Re: Information Leak!

    Quote Originally Posted by neomax
    One more thing. I can spoof addresses while sending mails. But still my frendz can find out its me(my composition is perfect. Its not social engg). I think it must be thru IP. How do i spoof my IP address in outgoing mails? I'm on cablenet.
    I would make a wild guess that your "frendz" would see it is you through the mail header, or that they will see your IP in the mail header.
    So if you wish to remove all absence of your internal network, you have to "clean" out everything that has to do with your information from the emails before you send them out. Do you have your own SMTP server at your internal network to send out the mails?

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  5. #4
    Linux Engineer
    Join Date
    Mar 2005
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    1,431
    You cannot block this information from been sent, as it is part of the core of any browser.
    This depends on the browser. I know in konqueror you can edit how much info sent by your browser, or even fake the info. When I used KDE I could make it sound like I was using IE 6.0 on win2k...

  6. #5
    Linux Engineer
    Join Date
    Mar 2005
    Posts
    1,431
    You cannot block this information from been sent, as it is part of the core of any browser.
    This depends on the browser. I know in konqueror you can edit how much info sent by your browser, or even fake the info. When I used KDE I could make it sound like I was using IE 6.0 on win2k...

    If you guys know about any other browser which have this capability, please tell...

  7. #6
    Linux Enthusiast
    Join Date
    Feb 2005
    Location
    SE, Stockholm
    Posts
    512
    Quote Originally Posted by jaboua
    If you guys know about any other browser which have this capability, please tell...
    Opera has this abillity as well. I can imagine that Firefox would be quite easy to tweak for this as well. If it is not possible by configuration, then just download the source and try to find the output from there and change to what ever you wish and re-compile.

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