Proxy Server

Adjusted points to 300

 Check the log settings for the proxy server; it may well allow you to specify an address or range of addresses, or even whole domains, that it shouldn't log.

 Also, you could schedule a simple script to run right after the log file is written, to use 'grep -v' to remove all references to your workstation.  You can get grep for Windows, freely, if that's your OS.

Are you using MS-Proxy??? or what?

Cox,

We are using MS-Proxy Server 2.0.

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Davidmwilliams,

I didn´t get grep for Windows yet, so I´m not able to test it.
Anyway, I think I´ll have some problems with file permission. Don´t you think so?

Thanks.

 It depends on how your NT server is configured - though, I'd expect the proxy server to run as a fairly unprivileged user, so if you have access to the server, you may well be able to write/modify the PROXY log file.  Certainly, if you are an administrator user then you should have no difficulty.  If the proxy log is on a special volume that has restricted access, you could possibly add yourself to one of the relevant groups using the Windows NT User Manager.

Hi All!

Maybe it´ll make the things clearer:
I just have the IP address and my proxy server machine has no shared drivers. So, I just have the IP address.

Thanks

 You just have the IP address of your proxy driver, and you can't get interactive access onto it?
  In that case, I think there's not much you can do ... because you need to be able to alter the proxy server's configuration, or at worst tamper with its log files.  You need access to it, and its files, to do this.

OK davidmwilliams.
What I want to know if it´s possible to access internet via a proxy server that is logging your actions and, do something so you can be an "invisible" user for the log file or even change/modify the log file.
It´s just a question about security and as you told me I can conclude it´s not possible if I have no permitions.

Thanks.

Ricardo

P.S.: I´ll leave this question more 3 or 4 days, if noone could give me a way to do it, I´ll accept your comment. So, after that put your comment as an answer.

 Thanks for the P.S.
  Unfortunately though, unless you have access to the server there is really nothing you can do.
  The only final thing I can think of is maybe try looking through some hacking type sites to see if there are any security holes in your particular proxy server that you can exploit !

Hi davidmwilliams!

Put your comment as an answer, so I can grade you OK?

Thanks

Ricardo

Thank you.