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How can they detect my internal IP?

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Name: Positron
Date: November 10, 2005 at 22:05:14 Pacific
OS: XP home
CPU/Ram: N/R
Comment:

Goto Audit my PC and scroll down the page to see the ‘We have found private information’ title. Can they retrieve your internal IP too?
Apparently they can retrieve my internal IP even though I'm behind a firewall router.
I have performed different security tests (such as Shields UP) on my firewall & the results say I have no leaks through my firewall. So how can they do this?
I thought the whole point of having a firewall router is to have your computer's IP hidden from outside!!
Any ideas?

PS. I am updated with all the latest security patches so the problem is not there.



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Response Number 1
Name: jboy
Date: November 10, 2005 at 22:16:15 Pacific
Reply:

They do explain:


Internal IP

This does not necessarily mean your firewall is malfunctioning or improperly configured. The method we used will sneak past most firewalls. Why? Because we use Java to grab the information and then pass it on to the server

Resist the temptation to close your request for help with semantically-null questions like “Can anyone help me?”


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Response Number 2
Name: Positron
Date: November 10, 2005 at 23:27:23 Pacific
Reply:

Well, thanks a bunch jboy!!
I know what they say.
But I am looking for more information and ways to prevent this.


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Response Number 3
Name: jboy
Date: November 11, 2005 at 01:32:21 Pacific
Reply:

"I know what they say."

Didn't (& doesn't) seem like it from what you've posted - then surely you read the rest:

You may find that you have all the necessary patches and are still giving away information. In that case, the only way to prevent this that we are aware of, is to disable active scripting in the browser.

Resist the temptation to close your request for help with semantically-null questions like “Can anyone help me?”


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Response Number 4
Name: stu77
Date: November 11, 2005 at 04:25:49 Pacific
Reply:

I got prompted to update Java which i did, ive also got a worm on my p.c WORM_WOOTBOT.HE, is this bad news, with the java update i mean? Is all my info going to a server. I aint got a clue. Should I disable active scripting in the browsers i use?


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Response Number 5
Name: Derek
Date: November 11, 2005 at 18:06:42 Pacific
Reply:

stu77
Is this tied up with going to "Audit my PC"?
If not you would be better to start a new post in Security & Virus forum top left of page. That way you'll get more focussed attention (particularly to the worm you mentioned).

Positron
That's life if you have active scripting enabled. Push your security up to Max and it will probably be OK if you run it again. Unfortunately you will have to set it down to default on many websites or they won't work.

In my (warped?) view scripting shouldn't be necessary on websites but I don't seem to have many supporters. On my W98SE I put a links button in my IE to the security tab to make switching Max-Default easier. This is the command I used:

C:\WINDOWS\control.exe inetcpl.cpl,@0,1

No idea if it would work on XP but it would do no harm to try if you want to (you can test it in the Run box).

DerekW


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Response Number 6
Name: Positron
Date: November 15, 2005 at 02:13:00 Pacific
Reply:


Thank you for your feedback Derek.
Actually jumping to the security pane of internet options is much easier under Xp & IE6: double click on the globe in the bottom right corner.

For the time being I just prop the security up whenever I want to do safe surfing until I find a better solution.



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Response Number 7
Name: Derek
Date: November 15, 2005 at 04:20:16 Pacific
Reply:

Hey, thx for info. This is one of those times like I've just discovered the mouse has two buttons. You can do exactly the same on W98SE & IE6 - no globe but hit Unknown Zone box. I completely missed out on that facility.

I will continue to use my Links button though because this allows you to get to Privacy (cookies) as well. It just goes to Internet Options as normal but with the Security tab open. You can still access the other tabs.

DerekW


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