Re: Youtube error message

["Scholz, Greg" <gscholz () KEENE EDU>]

But the IP the world sees for each end user doesn't change unless you
nat them. In a nat scenario each packet leaving the network would be
nated appropriately for the ISP link it is destined to exit. Correct?

We have 2 ISP links that are load balanced but no nat so user IP x.x.x.x
stays x.x.x.x not matter which link it goes out or what YouTube server
the user hits.


_________________________
Thank you,
Gregory R. Scholz
Director of Telecommunications
Information Technology Group
Keene State College
(603)358-2070

--Lead, follow, or get out of the way. 
       (author unknown)




-----Original Message-----
From: The EDUCAUSE Security Constituent Group Listserv
[mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Brawner, David
Sent: Tuesday, October 14, 2008 12:04 PM
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: Re: [SECURITY] Youtube error message

For everyone who is considering load balancing their Internet connection
and use YouTube, please note that there are technical issues with
YouTube, multiple ISPs, and a load balancing device.  The heart of the
issue are the distinct IP address ranges you receive from your different
ISPs.

YouTube uses cookies and 303 redirects to access their videos, and your
client IP address must be the same during the entire IP session or
YouTube will reply with a "Video Not Available" error.  The crux of the
problem is that YouTube pulls it's HTML content from separate servers
than its video content, but they cross-check the source IP of your
client packets to see if they match.

YouTube is apparently staying "mum" on the issue and all I can find out
on the web is conjecture and conversation about this problem.  Here are
a couple of links to blogs about the issue that may give a little more
detail, but everyone is just as frustrated as we are (even the
manufacturers of these load balancing devices).

http://help.youtube.com/group/youtube-issues/browse_thread/thread/a036cf
d69ec6f48f/323a8475c55cd8d7
http://help.youtube.com/group/youtube-issues/browse_thread/thread/d3366a
892631b6c3
http://lysine.org/2008/06/youtube-and-load-balancing.html

David S. Brawner
Manager of Network & User Services
Maryville University of St. Louis

-----Original Message-----
From: The EDUCAUSE Security Constituent Group Listserv
[mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Kubb, Rick
Sent: Tuesday, October 14, 2008 10:05 AM
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: Re: [SECURITY] Youtube error message

We also installed a redundant internet pipe  (20meg AT&T and 20 meg
Charter).  Traffic is routed out both pipes .  So it seems we have a
similar set up as Crown College.  We haven't been able to identify what
is causing this problem though.


Rick Kubb
Director of Administrative Technology
Maryville University
650 Maryville University Drive
St. Louis, MO  63141
(314) 529-9606
rkubb () maryville edu
 

-----Original Message-----
From: The EDUCAUSE Security Constituent Group Listserv
[mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Nathan Fritz
Sent: Tuesday, October 14, 2008 8:59 AM
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: Re: [SECURITY] Youtube error message

We are seeing that same error all the time. Over the summer, we picked
up a redundant internet connection for a 2nd ISP in town. We have our
Sonicwall firewall do percentage based load balancing across both pipes.
We have the option enabled that tries to keep sessions routed through
the same connection, but after setting all of this up, we starting
seeing these youtube errors. I disregarded them, thinking they were the
result of takedowns, until I tried to show one of my staff a video that
I had watched at home earlier that day (and have watched since then).
The errors are just coming up at the college...

Nathan Fritz
______________________________
Director of Information Technology
Crown College
8700 College View Drive
St. Bonifacius, MN 55375
Tel: (952) 446-4151
Fax: (952) 446-4149 


> > > Kevin Hayes <krhayes () OAKLAND EDU> 10/13/2008 3:31 PM >>>
I have noticed the error in the past when my browser times out while  
attempting to contact whatever content server the media resides on.   
Usually refreshing the page kicks it into gear and the content loads.

I have seen that a special message is displayed if the content is  
removed due to DMCA, something along the lines of "The content you  
have requested has been removed at the request of it's creator"

--Kevin

Kevin Hayes
Network Security Analyst

225 Dodge Hall
Oakland University
(248) 370-2546






On Oct 13, 2008, at 4:23 PM, Morrow Long wrote:

> Most likely that is the case when copyright material has been  
> removed from YouTube based on a request of the
> intellectual property right owner.
>
> I'd noticed that NBC selectively pulled videos of a few SNL skits  
> recently and left others
> (the Tina Fey / Sarah Palin skits) on YouTube and got the 'video no 

> longer available' message.
>
> On Oct 13, 2008, at 4:07 PM, Kubb, Rick wrote:
>
> > Has anyone been having issues with the following Youtube error  
> > message?
> >
> > *We*re sorry, this video is no longer available*???
> >
> > Would appreciate if others seeing this have found possible causes  
> > and resolution to problem.
> >
> > Rick.
> >
> > Rick Kubb
> > Director of Administrative Technology
> > Maryville University
> > 650 Maryville University Drive
> > St. Louis, MO  63141
> > (314) 529-9606
> > rkubb () maryville edu