Dear Hani,
The document you have shared is really amazing. Is the system aware of the 
advanced applications or random ports-based applications?
Is there a list of applications also?

Thank you,

Maher El Zein
CCIE No. 21032 | CCDE
Lead Architect, Networks and Security
Beirut, Lebanon

Mobile:     +96176903142
Email:       [email protected]                           
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> On 22 Oct 2013, at 14:46, "Hani Abuelkhair" <[email protected]> wrote:
> 
> If any one is interesting to find a solution for caching http, and P2P with 
> filtering and blocking (all in one) don't hesitate to contact me any time    
> 
> --------------------------
> Hani Abuelkhair
> Sent from my iPhone
> 
>> On Oct 22, 2013, at 10:51, Samah Mukhtar Amin Abdelrahman 
>> <[email protected]> wrote:
>> 
>> Hi Hany,
>>                 I found your Blog is very interested and useful as we are 
>> here in Sudan facing same issues regarding the web-filtering solutions and 
>> using the bluecoat as well.
>> I will contact you in the next days to know more about the WireFilter.
>>  
>> Regards,
>> Samah
>>  
>> From: [email protected] [mailto:[email protected]] 
>> On Behalf Of Hany Almansour
>> Sent: Monday, October 21, 2013 11:33 PM
>> To: Richard Barnes; [email protected]
>> Cc: [email protected]; Alissa Cooper
>> Subject: Re: [menog] Internet Service Blocking and Filtering
>>  
>> Hi Richard,
>>  
>> thanks for sharing the document, my comment is only on the "network based 
>> blocking" :
>> 1. In some cases the intermediary is totally transparent in the network but 
>> it needs to give a message to the end-point that the resource is blocked 
>> which complicate the protocol. however it is possible and was done on large 
>> scale
>> 2. there is  symmetric  and  asymmetric  filtering techniques. up to my 
>> knowledge the asymmetric filtering technique is less complex and can be used 
>> on large scale ISP. please see my blog about "Internet filtering in Saudi 
>> Arabia" : http://www.hany.org/?p=517
>>  
>> I will read the remaining and feed you back if i have any comment
>>  
>> Best Regards,
>>  
>> Hany
>>  
>>  
>>  
>> 
>> On Mon, Oct 21, 2013 at 9:39 PM, Richard Barnes <[email protected]> wrote:
>> Dear colleagues,
>>  
>> I've been working with the Internet Architecture Board on a document that 
>> describes technical considerations regarding the blocking and filtering 
>> Internet services.  Since I know there are several experts on the topic in 
>> this community, I thought I would forward it in case anyone had comments.
>>  
>> The document can be found at: 
>> http://tools.ietf.org/html/draft-iab-filtering-considerations-04
>>  
>> Abstract:
>>  
>>    The Internet is structured to be an open communications medium.  This
>>    openness is one of the key underpinnings of Internet innovation, but
>>    it can also allow communications that may be viewed as undesirable by
>>    certain parties.  Thus, as the Internet has grown, so have mechanisms
>>    to limit the extent and impact of abusive or objectionable
>>    communications.  Recently, there has been an increasing emphasis on
>>    "blocking" and "filtering," the active prevention of such
>>    communications.  This document examines several technical approaches
>>    to Internet blocking and filtering in terms of their alignment with
>>    the overall Internet architecture.  In general, the approach to
>>    blocking and filtering that is most coherent with the Internet
>>    architecture is to inform endpoints about potentially undesirable
>>    services, so that the communicants can avoid engaging in abusive or
>>    objectionable communications.
>>  
>> Please send feedback to me, the co-editors (on the CC), or the IAB 
>> ([email protected], who will be ultimately responsible for publication or not).
>>  
>> Thank you very much,
>>  
>> --Richard
>>  
>> 
>> 
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