>
> Good day to all.
>
> I was looking into Firewall-1 as I am in need of configuring it to use
> an external HTTP Proxy. Here is my topology:
>
> 1) FW1 NG with several HTTP rules
> 2) Clients are NOT configured to use FW1 as proxy (as matter of fact
> they are not configured to use anyone as proxy)
>
> I need to "redirect" all traffic, sent out via HTTP, through FW1 to a
> proxy server. I've seen that this is possible using the
> option HTTP Next
> Proxy. However, the following questions came to mind:
>
> 1) Is it possible to put this Proxy server in my DMZ?
> (traffic will have
> to go back through FW1 without creating a loop)
> 2) Is there any other way (other than HTTP Next Proxy) that
> might allow
> me to configure the proxy server in the individual rules without using
> CVP or UFP? I need to mantain a few other rules letting HTTP
> out without
> passing through the proxy.
>


Create under services a new service "

http_redirect, with protocol 6 -> then under [advanced]
you have to enter in the "match" field
SRV_REDIRECT(80,192.168.1.1,8080) which means redirect
from port 80 to host 192.168.1.1 port 8080 and no
protocol type.

Assuming the Proxy parameters are :

   IP   : 192.168.1.1
   Port : 8080

Using this setup I redirected web traffic to our Squid Cache 
(www.squid-cache.org)
on the DMZ for specific internal networks.

The redirection is applied for rules looking like  :

  Source           Destination  Service        Action
---------         -----------   -------       ---------
 Host/Network       Outside    http_redirect     accept


 Intercepting proxies may need extra config. setting to handle http
 requests from proxy unaware clients.

 M.

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