I would suggest you talk your organization to drop the conservative view of Facebook and rip the positive benefits 
of Facebook. Trying to block Facebook from the users is just the same thing as Mbarak blocking Egypt from accessing 
Facebook and the likes of Twitter.  According to Facebook and other Social networks blocking their users access drives them to 
invest in research of how their clients (your Facebook users) can by pass the measures put to clamp down their access to Facebook.
Your request is a fight against common forces.

Atudo Ayodo
Systems Analyst 
+254 721 912151, +254 737 587726





Date: Tue, 15 Feb 2011 16:08:20 +0400
From: lmwangi@gmail.com
To: skunkworks@lists.my.co.ke
Subject: Re: [Skunkworks] How to block https://facebook.com

As someone said, Null route all the prefixes advertised by facebook with Iptables. That's free. That, won't prevent your users from using tor, tunnels or third party proxies... For that, you'll need to look at the packets and drop anything with the facebook specific content.. Look at the netfilter patch-o-matic... That's free too. Though, that won't help you if they use encryption.

On Tue, Feb 15, 2011 at 4:02 PM, Rocky Mbithi <rockymbithi@gmail.com> wrote:
Is there no simple and cost free method?



On Tue, Feb 15, 2011 at 2:53 PM, [Brainiac] <arebacollins@gmail.com> wrote:
i would suggest you invest in a good firewall (read old linux box) and configure it (read IPtables rules) to block facebook at domain level, DNSes and Ip addresses. 


oh, and while youre at it block all public and private proxies.... 


On Tue, Feb 15, 2011 at 2:51 PM, [Brainiac] <arebacollins@gmail.com> wrote:
i hope you realize blocking that port basically incapacitates any secure transmissions to the web, for instance, gmail..... 

On Tue, Feb 15, 2011 at 2:49 PM, Rocky Mbithi <rockymbithi@gmail.com> wrote:
Good day Skunks,

I blocked http://www.facebook.com but some witty guys where still able

to facebook on https://facebook.com. Apparently https://facebook.com uses

port 443, when I blocked the port, using a port blocker I got from http://www.e-systems.ro/

I was still able to FB on https://facebook.com. Any suggestions or solutions will be highly

welcome.

Thanks.


Kind regards
Rocky Mbithi
Cell       : +254721708325
Skype name: rockymbithi

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--
“The twentieth century has been characterized by three developments of great political importance: the growth of democracy, the growth of corporate power, and the growth of corporate propaganda as a means of protecting corporate power against democracy”

~  Alex Carey ~

Tel No: 0x2af23696



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