in reply to Get Client IP Address

$ENV{REMOTE_ADDR} (IP address) and $ENV{REMOTE_HOST} (domain name or undefined), as documented in the CGI spec.

remote_host is CGI's interface to this data.

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Re^2: Get Client IP Address
by kanish (Sexton) on Feb 17, 2006 at 03:57 UTC

    Thanks for your answer.. its working..

    But It failed when client using through proxy.

    Please advice me.

[reply]
      Failed? You mean you got the proxy's address? Well, that's to be expected since the proxy IS the client of the server. There's no way of knowing more than that from HTTP. You might be able to do more using JavaScript since that will run in the browser, not on the server.
[reply]
        There's no way of knowing more than that from HTTP

        As a matter of fact there is at least one: it's X-Forwarded-For header which although is not a standard header, is very popular, and there are quite a lot of proxies giving away the client's IP this way.

        Dodge This!
[reply]

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