Re: [squid-users] Strange issues with accessing facebook and other php driven sites via proxy

Kelly, Jack wrote:
>
> Hi everyone,
> At my office I've implemented a Squid server which uses LDAP credentials
> to give certain users access to certain websites. Basically, everyone
> belongs to a base 'Filtered' group, and individual users can be added to
> a 'FacebookAccess' group for access to facebook. This is mainly because
> some departments (read: marketing) need access to facebook while others
> do not.
>
> I've only been working on in Squid for about a month and although I've
> gotten pretty proficient at getting it to do what I want, I've
> encountered what's seeming to be a higher-level problem.
>
> Here's the relevant section of my conf file:
>
> acl Unfiltered external InetGroup Unfiltered
> acl FacebookAccess external InetGroup FacebookAccess
> acl Filtered external InetGroup Filtered
>
> acl blocksites url_regex "/etc/squid3/block.acl"
> acl whitelist url_regex "/etc/squid3/whitelist.acl"
> acl facebook url_regex .facebook.
> acl fbcdn url_regex .fbcdn.
>
> #Note: these two lines were added to troubleshoot
> always_direct allow fbcdn
> always_direct allow facebook
>
> http_access allow Unfiltered
> http_access allow Filtered whitelist
> http_access allow FacebookAccess facebook
> http_access allow FacebookAccess whitelist
> http_access deny Filtered blocksites
> http_access deny FacebookAccess blocksites
> http_access allow FacebookAccess
> http_access allow Filtered
>
> And here's the problem:
> Users in the FacebookAccess group can get to www.facebook.com
> <http://www.facebook.com/> without a problem, and users who are only in
> the Filtered group cannot. So that's great. However, when they log in
> and reach www.facebook.com/home.php?, they just get a white screen -
> sometimes. Occasionally it works and occasionally it doesnt; there
> appears to be no rhyme or reason to it. I've added ".fbcdn." to my
> whitelist.acl file, because I saw that content from that domain was
> getting denied when facebook loads... but even after that, no go.
>
> When I visit the site and log in, the access.log just shows:
>
> jackk 08/Oct/2009 11:54:30 TCP_MISS/200 GET http://www.facebook.com/
> jackk 08/Oct/2009 11:54:36 TCP_MISS/200 CONNECT login.facebook.com:443
> jackk 08/Oct/2009 11:54:36 TCP_MISS/200 GET
> http://www.facebook.com/home.php?
>
> And to troubleshoot I tried accessing facebook from a member of the
> 'Unfiltered' group, to which no restrictive acl policies apply. Same
> problem. Meanwhile obviously a direct, proxy-free connection to facebook
> from my office works just fine.
>
> I'm very, very stuck. Any advice on what to try next would be hugely
> appreciated.
>
> Thanks!
>
> Jack Kelly
> Network Services Administrator
> W/S Development Associates, LLC
> Chestnut Hill, MA
>
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Hi there,

Change this...
http_access allow FacebookAccess facebook

To This...
http_access allow FacebookAccess facebook fbcdn_url

Thanks
Tookers

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