security based on IP address

[Amit Sharma <amit.sharma () linuxwaves com>]

Hi there,

My ISP provides internet access based on IP address. As in, he gives static IP addresses to its customers and 
allows/disallow internet access based on the same.


1. What am wondering at is, what if my ip address is blocked but I take over somebody else's ip address and try to 
connect to the internet? Will the ISP's proxy detect this?

This leads to the second question..
2. Can I take over the ip address of a system that is already up?


Gracias,
Amit

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