HTTP - IP restriction bypass

Dear colleagues, We’re now managing connections to the intranet using private IP addresses, so it’s no longer necessary to login with a username / password when you are already connected to the internal company network. Regards, The network admin

Let's intercept this request in Burpsuite.

Next, we can send this request to the Repeater.

X-Forwarded-For

It is a de-facto standard header for identifying the originating IP address of a client connecting to a web server through a proxy server.

We can add this header and set it's value to 192.168.0.1 as the origin should be connected to the internal company network.

HTTP Request

For the final step we have to send this request to the server.

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