Full Disclosure: Re: client - server

[Michael Holstein <michael.holstein () csuohio edu>]

> which informations can a server get about a client running M$ windows XP ?
> I cannot access a website because i have been "banned" and I'd like to
> understand how they recognize me for sure.
All sorts of stuff. Visit browserspy (http://gemal.dk/browserspy/) for a 
bunch of tests. Java is one excellent way to steal the goods (and many 
browserspy tests use that).
The 'short' answer is, however, probably a simple IP check.
> I mean:
> - a simple ip check doesn't work with dynamic addresses...
> - cookies can be deleted
> - computer name can be changed
> - mac address can be changed (even I wasn't able to, because I have a usb dsl
> modem and I cannot change its MAC working with regedit or using tools like smac )
MAC address? That's not visible past the DSLAM. As for dynamic 
addresses, have you kept track? I have (supposed) dynamic addresses at 
home and it's not changed in over a year.
You should dump the DSL modem and get a conventional ethernet one. Then 
change the MAC on your ethernet card at will (this will get you new 
addresses). There probably is a way to access the innerds of the USB one 
but you'd probably have to take it apart and locate the serial port.
~Mike.
> Anything else ?
> How the hell do they recognize me ?
>
> Matteo Giannone
>
>
>
>
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