[squid-users] squid, forwarding some specific requests to another proxy

From: Shahriar Mokhtari <mokhtari@dont-contact.us>
Date: Thu, 12 Feb 2004 00:20:25 -0500 (EST)

Hi there,

 FAQ and google search did not help me much for the following problem. I am encountering a scenario where 10-15 dial up users are using an internet connection through the cache server which does transparent web caching. Caching is done by Squid-2.4. The ISP which provides the connection filters out some websites I believe using IP. when I telnet to say one of the filtered sites this is the output: ( i have changed what you see inside [...])
telnet [the-filtered-site] 80
Trying [the-ip-of-the-site]...
Connected to [the-filtered-site].
Escape character is '^]'.
"GET http://[the-filtered-site] HTTP/1.1\r\n"

HTTP/1.1 403 Forbidden
Date: Tue, 10 Feb 2004 06:53:39 GMT
Content-Length: 628
Content-Type: text/html
Server: NetCache appliance (NetApp/5.5)


<meta http-equiv="Content-Type" content="text/html; charset=windows-1256">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">


[ The message here, saying the website cannot be viewed, blah blah blah]

The output is generated by my ISP. Costumers have learned that they can pick some proxy (on port !80) and get to the websites that are being filtered by my ISP. I wonder if I can do it automatically for them. I do not want to use a fixed proxy server, say it being the parent of my cache server. what I want is to use a proxy server to somehow bypass my isp filtering for the sites it is doing the filtering. Squid log produced TCP_MISS 403 for these pages. I want customers access the websites which are not being filter, via my cache server. Can squid be used, say using acl or so, to work out my plan?

S. Mokhtari
Received on Wed Feb 11 2004 - 22:39:53 MST

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