[squid-users] how can i provide outgoing ip address of a client public ip address for every client ?

[Yavuz Maşlak]

Hi

I have some clients that have their own public ip addresses.  They will use
a Proxy server. 
When a client reach to internet, I want squid to provide that client should
reach internet with  own ip address instead of squid 's ip address.

How can i do that ?