On Wednesday 30 July 2003 12.57, ads squid wrote:

> Some users are changing IP addresses purposly. This
> give IP conflict error. Then I tried to put limits by
> using MAC address of those particular addresses. But
> It seems one change MAC address too. Therefore problem
> could not be solved.

The MAC address is almost as easy to change as the IP address.

> Is there any way with which (other than
> physical control) I can keep control on each and every
> user with some mechanism with which can not be changed
> by user under any circumstances.

Authentication, and limiting each authenticated user to a single IP 
address at a time (prevents sharing of passwords).

Regards
Henrik

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