[Gllug] how to check for a transparent proxy

Formi formi at blueyonder.co.uk
Sun Dec 8 18:17:45 UTC 2002




 Hi Pete,

 I've just tried to access your server, and I'm getting 500 server error.

 Just thought I'd tell you.

 Formi.



On Sun, 1 Dec 2002, Pete Ryland wrote:

> On Sun, Dec 01, 2002 at 01:33:39PM +0000, rich at annexia.org
> wrote:
> > On Sun, Dec 01, 2002 at 03:52:07AM +0000, Pete Ryland wrote:
> > > On Sun, Dec 01, 2002 at 03:42:12AM +0000, Xander D
> Harkness wrote:
> > > > Does anyone know how to test for a transparent proxy?
> > >
> > > Go to http://pdr.me.uk/t.php and find the bit that says
> "REMOTE_ADDR"
> > > and if that is your IP then there is no proxying,
> otherwise the external
> > > IP of your proxy will be there.
> >
> > A decent transparent proxy will rewrite source addresses, so
> > this will NOT tell you if there's a transparent proxy in the
> > way.
>
> This is contradictory.  If it is rewriting source addresses
> then the
> REMOTE_ADDR according to the web server WILL be the proxy's.
>
> Pete
>
>

-- 

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