Re: [squid-users] youtube safety mode

On 03/21/2011 08:16 PM, Amos Jeffries wrote:
> On 22/03/11 16:16, Jon wrote:
>> On 03/21/2011 04:31 PM, Amos Jeffries wrote:
>>> On Mon, 21 Mar 2011 16:06:31 -0800, Jon R. wrote:
>>>> On Friday, March 18, 2011 15:48 AKDT, Amos Jeffries wrote:
>>>>
>>>>> On 19/03/11 07:14, Test User wrote:
>>>>> > I had been asked if this is possible and doing a search through
>>>>> the mailing list and google, I could only find a howto for
>>>>> SafeSquid. Is it possible to do this in transparent mode using
>>>>> squid? If so, can someone point me to a doc on how to accomplish
>>>>> this?
>>>>>
>>>>> What is this "youtube safety mode" you speak of?
>>>>>
>>>>> NP: "SafeSquid" is a system which is not related to Squid, just
>>>>> taking
>>>>> the brand name to boost their product.
>>>>>
>>>>> Amos
>>>>
>>>> Hello Amos,
>>>>
>>>> I understand about SafeSquid after spending a couple minutes on their
>>>> site.
>>>>
>>>> The youtube safety mode is a mode that blocks objectionable content
>>>> from appearing as a result in a search. From what I have read it
>>>> appears to only work on a browser by browser basis, so I figured I
>>>> would ask the gurus' if they knew of a way to turn it on using a
>>>> transparent proxy.
>>>>
>>>> Here is a link to YouTubes explanation of what it is:
>>>>
>>>> http://www.google.com/support/youtube/bin/answer.py?answer=174084
>>>>
>>>
>>> That is one truely useless explanation for anyone with technical
>>> interest.
>>>
>>> Do you have any info or knowledge about how it operates in HTTP? or if
>>> it even does so?
>>>
>>> Squid has some capability to alter HTTP headers. But that requires
>>> knowing what is going on in the background and what to change from/to.
>>>
>>> Amos
>>>
>>
>> The best information I have found for it is from the safesquid website
>> that explains how they enforce it.
>>
>> Taken from: http://www.safesquid.com/html/portal.php?page=165
>>
>>
>> "The first rule in Profiles section identifies requests made for
>> youtube.com, and adds them a profile 'UNSAFE_YOUTUBE'.
>>
>> The second rule analyzes the Request Header Pattern of the client, to
>> check if a string - 'PREF=f28000000' exists in cookie being sent to the
>> host. This string will be found, only if the client has opted for Safety
>> Mode. If the string is found, this rule removes the profile
>> 'UNSAFE_YOUTUBE' from the request, and adds a profile 'SAFE_YOUTUBE' to
>> it, and the request is forwarded to the host.
>>
>> If the string is not found, the request still carries the
>> 'UNSAFE_YOUTUBE' profile. The rule under Rewrite document section acts
>> upon such requests, and inserts the string in the cookie section of the
>> client request headers, and forwards the request to the host.
>>
>> So effectively, all requests that are sent to the host, i.e.
>> youtube.com, carry the 'Safety Mode Enabled' preference string. This
>> makes youtube serve only filtered results to the client."
>>
>>
>>
>> I think almost the same thing could be done with squid but I am not a
>> squid master, so I am asking here. I am sorry if I am not giving you
>> good information to work with.
>>
>>
>> Jon
>>
>
> Thanks Jon. That does seemmore useful than the YouTube docs.
>
> It paints a sad picture though. There is one possible way to turn it
> OFF. But not for turning it on without screwing the clients cookies up.
>
> "Test User": you will have to used ICAP/eCAP or other HTTP content
> adaptation fiddling. Squid will not do this itself.
>
> Amos

Thanks Amos! I very much appreciate you taking the time to look into it.

Jon
Received on Tue Mar 22 2011 - 04:22:58 MDT