JavaScript Address Info

The following technique was pointed to me by DanBUK. Dan managed to find the internal IP address of the visiting client by establishing a socket between local host and the remote web server. Upon success the socket populates its structure with all kinds of useful stuff among some of which are the internal NATed IP address and the hostname.

The source code can be downloaded from here. [...]

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JavaScript Port Scanner

SPI Dynamics released a paper on how to port scan and do other cool stuff with JavaScript. I found the paper interesting and as a result I decided to make my own port scanner in JavaScript. My aim was to build a small, fast and reusable javascript portscanning object. After a couple of hours fiddling around with IMG tags and other DOM elements I came up with the following solution.

The code depends on your connection speed and might not be very accurate. [...]

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