On Monday 10 March 2003 08.28, NetSnake wrote:
> I want to deny all of who use a proxy
> access to me. For example, user 192.168.0.5 can access to internet,
> 192.168.0.10 can not, then 192.168.0.5 running a proxy server,
> 192.168.0.10 connecting to 192.168.0.5's proxy and he can access to
> internet, they all access to internet via my proxy at last. can I
> indentify the request which come from 192.168.0.5, and which come
> from 192.168.0.5 (via 192.168.0.10's proxy) ? Thanks a lot

Not entirely trivial but by using user authentication you get very 
far. By using authentication you can identify the user who initiated 
the request no matter from where or via what proxies.

You also need a policy of use which denies sharing of the users proxy 
account.

Regards
Henrik

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