Build Squid transparent proxy gateway

I. working mechanism of WEB Proxy

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       1 2 , 3 , 4 Route

       if the data requested by the client is not yet in the cache, go 1 , 2 , 5 , 6 , 3 , 4 Route

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                                               Benefits of using proxies

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second, the bottom through an experimental case to understand its actual work process :

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Build Squid transparent proxy gateway