Maybe you should take a look at ClearOS[1]. It is a RHEL based distribution from a company that, now, develops layer7-filter. In a simple way I was able to block all FLV videos (even if the users are still able to reach youtube.com, they can not see any videos).
[1] - http://www.clearfoundation.com/Software/overview.html -- Henrique "LonelySpooky" Junior http://about.me/henriquejunior >________________________________ > From: Konstantin Olchanski <[email protected]> >To: vivek chalotra <[email protected]> >Cc: [email protected] >Sent: Thursday, October 4, 2012 3:10 PM >Subject: Re: Iptable rule required to block youtube > >On Thu, Oct 04, 2012 at 12:57:00PM +0530, vivek chalotra wrote: >> >> And now i want to block youtube on my network. kindly suggest iptable rules >> to do that. >> > >"block youtube on my network" is not a very well defined wish. > >If you want to merely block the well known youtube IP and DNS addresses, >you can use iptables, etc. Be prepared to update these lists frequently >to keep up with things like youtu.be & co. > >If you want to prevent users of the network from watching all youtube videos >always, >give up now. > >First of all, you will have to be able to handle legitimate exceptions: >"how do I watch training videos for Altera Quartus software that >happen to be hosted on youtube?!?". > >Second, you will have to handle all the possible 3rd party redirectors, >proxies, and other kludges specifically designed to circumvent >youtube blockers such as you are try to build. > >-- >Konstantin Olchanski >Data Acquisition Systems: The Bytes Must Flow! >Email: olchansk-at-triumf-dot-ca >Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada > > >
