Proxy settings not working

I have set SQUID proxy server on my one of the machine '192.168.1.69'.

I ass开发者_如何学Cigned other machines GATEWAY to '192.168.1.69'.

I have set proxy for both windows (Start -> Control Panel -> Internet Options -> Lan Settings ) and linux (System -> Preferences -> Network proxy),but though I had to set proxy address on my browser.

I want to know is there any way to automatically set proxy address without any settings on browser.

Thanks !

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Well the proxy may not be the gateway. If you want the proxy config to be automatic, this is called transparent proxy.

One way to do it, is using iptables on the gateway machine:

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128

You can find more information about this on wikipedia, or cyberciti.biz

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There's a difference between a network proxy and an application (HTTP/HTTPS) proxy. Squid is the latter, which is why you had to set the proxy address in your browser.

Check out this link to set up a proxy config file that your browsers should read automatically:

http://technet.microsoft.com/en-us/library/dd361918.aspx