Sonicwall NSA 2400 + Squid Transparent Proxy

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Hey,

I have a Sonicwall NSA 2400 Firewall device operating as my DHCP. It works great no real complaints all firewalls can be a pain. I recently configured Squid successfully on a Linux (Centos) PC and that's working great as well, however there is one thing missing. To have the Proxy server to be transparent.

The Sonicwall device has the option to forward all http requests to an IP address, however when that is selected the proxy no longer operates properly the exceptions are not allowed. The LAN IPs in the proxied subnet cannot browse whatsoever. I would like the firewall to forward all http requests to the proxy server that way no user can remove the proxy settings from their browser.

Any ideas, solutions, I'd be grateful

Thanks

 

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No assistance in setting up a transparent proxy via Sonicwall NSA 2400?

 

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Ok hopefuly someone takes a peak at this and gives me a hand.

I have the Firewall picking up the proxy server using the Web Proxy option in the Network settings. However now I have an issue trying to get the proxy server to partition the DHCP clients from the static clients. I want all DHCP clients to be proxied, however when the proxy ser ver gets a HTTP request it comes from the Sonicwall's private IP and not the device requesting the wepage.
Is it possible to forward the private IP of the dhcp devices to to the the proxy server, or would this problem be best solved with having two subnets? I have tried to create routes straight to the proxy server and NAT policies to send the private ips to the proxy server when an HTTP request is made to no avail, everything goes through the Sonicwall since its the default gateway. How do I tell the Sonicwall to allow the proxy to be the default gateway for HTTP requests?