Determine IP address without using ENV vars

[S]

Hi-

Years ago I used to visit an ENV test page that could display my
IP address using JavaScript alone if I was using an ANON proxy.

I'm trying to find that code to use as part of a 'privacy test'
web page I'm building. If someone could post some sample code
I'd appreciate it.

Since I'm a raw newbee at JS, if anyone has a URL of a page that
already does this it would even be better since I could, sort of,
'study it in the wild.'

Thanks,

S

[S]

Re: Determine IP address without using ENV vars

Philip Ronan wrote:
[color=blue]
> On 03.8.7 11:40 PM, S wrote:
>[color=green]
> > Hi-
> >
> > Years ago I used to visit an ENV test page that could display my
> > IP address using JavaScript alone if I was using an ANON proxy.
> >
> > I'm trying to find that code to use as part of a 'privacy test'
> > web page I'm building. If someone could post some sample code
> > I'd appreciate it.
> >
> > Since I'm a raw newbee at JS, if anyone has a URL of a page that
> > already does this it would even be better since I could, sort of,
> > 'study it in the wild.'
> >
> > Thanks,
> >
> > S
> >[/color]
>
> Try this: http://www.gemal.dk/browserspy/
>
> Phil
>[/color]

I looked around there and I went to 'IP Information'

http://www.gemal.dk/browserspy/ip.cgi

and while there was lots of JS on the page, I think that they
were just using ENV vars because they could only see the IP
of my proxy, not mine. When I switched to another proxy, they
bought that one, too.

Thanks,

S

[Jim Ley]

Re: Determine IP address without using ENV vars

On Thu, 7 Aug 2003 18:40:20 -0400 (EDT), "S" <sleeping@sunse t.net>
wrote:
[color=blue]
>Years ago I used to visit an ENV test page that could display my
>IP address using JavaScript alone if I was using an ANON proxy.[/color]

client side JS has no access to the ip address of the machine, and it
would often be completely useless in any case getting a private IP
range won't help you in the slightest (or say anything about the
number of proxies it went out in between.)

Jim.
--
comp.lang.javas cript FAQ - http://jibbering.com/faq/

[S]

Re: Determine IP address without using ENV vars

Jim Ley wrote:
[color=blue]
> On Thu, 7 Aug 2003 18:40:20 -0400 (EDT), "S" <sleeping@sunse t.net>
> wrote:
>[color=green]
> >Years ago I used to visit an ENV test page that could display my
> >IP address using JavaScript alone if I was using an ANON proxy.[/color]
>
> client side JS has no access to the ip address of the machine, and it
> would often be completely useless in any case getting a private IP
> range won't help you in the slightest (or say anything about the
> number of proxies it went out in between.)
>
> Jim.
>[/color]

Hi-

I'm not sure I understand. Are you saying that while JS may be used
to put my IP on a web page that I can see -- that it won't be revealed
to the site generating the page?

Thanks,

S

[Jim Ley]

Re: Determine IP address without using ENV vars

On Thu, 7 Aug 2003 23:45:32 -0400 (EDT), "S" <sleeping@sunse t.net>
wrote:
[color=blue]
>I'm not sure I understand. Are you saying that while JS may be used
>to put my IP on a web page that I can see[/color]

Client-side javascript has no access to the IP address in a default
security environment, the page you saw used server side techniques, or
exploited a security flaw in your browser, or you gave it the higher
permissions.

Jim.
--
comp.lang.javas cript FAQ - http://jibbering.com/faq/

[S]

Re: Determine IP address without using ENV vars

Jim Ley wrote:
[color=blue]
> On Thu, 7 Aug 2003 23:45:32 -0400 (EDT), "S" <sleeping@sunse t.net>
> wrote:
>[color=green]
> >I'm not sure I understand. Are you saying that while JS may be used
> >to put my IP on a web page that I can see[/color]
>
> Client-side javascript has no access to the IP address in a default
> security environment, the page you saw used server side techniques, or
> exploited a security flaw in your browser, or you gave it the higher
> permissions.
>
> Jim.
>[/color]

Wow! Thanks for the input.

S