On Jan 24, 2011, at 1:09 PM, jam...@mail.milton.k12.wi.us wrote:

> Hello Folks,
> 
> 
> 
> We're currently using squid + DG as a content filtering system and it's
> fantastic. The problem lies with a combination of Squid + Safari and the
> site facebook.com. Students can currently get around our blocks by
> changing the protocol from http to https. The logs show that squid sees
> the "CONNECT" function and tries to block it but it still passes through.
> All other browsers it's fine and all other sites + safari it appears to
> also be fine. Anyone have any ideas? We've tried blocking using DG and
> then directly through squid by blocking the CONNECT function to facebook.
> 
> Squid version 3.0.STABLE24
> 

Hi James,

I ran into the same problem using squidguard. I used a pretty harsh denial in 
my firewall. My squid SG works in " intercept " mode so I wrote an IPFW 
statement to deny https for facebook.

deny ip from any to 66.220.144.0/20 dst-port 443
deny ip from any to 69.63.176.0/20 dst-port 443

hope this helps

-j

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