full-disclosure - client

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <42234469.3030002@csuohio.edu>
From: michael.holstein at csuohio.edu (Michael Holstein)
Subject: client - server

> 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
> 
> 
> 
> 
> ____________________________________________________________
> 6X velocizzare la tua navigazione a 56k? 6X Web Accelerator di Libero!
> Scaricalo su INTERNET GRATIS 6X http://www.libero.it
> 
> 
> 
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html
>