[TriLUG] Is TWC throttling CDN traffic (youtube/amazonprime/netflix) ?

[Matt Flyer]

Here is a little bit more information on the source.  It is XO 
communications, which like TWC is headquartered in Herndon, VA.  Using 
the team-cmyru IP to ASN page, http://asn.cymru.com/cgi-bin/whois.cgi, I 
found that this IP correlates to ASN 2828.  Then going to 
cidr-report.org, did a lookup of the IP addresses assigned to this ASN 
(http://www.cidr-report.org/cgi-bin/as-report?as=2828). Unfortunately, 
IPV4 is a massive piece of swiss cheese and they have a boatload of IP 
addresses associated with them.

According to the reddit post, some people were reporting needing to 
block multiple spans and undoubtedly TWC will attempt to adapt by 
changing the addresses, just like spammers do.  Consequently, it may be 
necessary or desirable to block all of XO (?)

The link above, from cidr-report will give you the IP address range.

Lastly, here is a link 
(www.linuxquestions.org/questions/linux-security-4/determine-ip-address-blocks-owned-an-isp-to-stop-hacking-attempts-481822/#post2415745) 
to a post on LQ.org, courtesy of unSpawn with a script to extract the IP 
addresses from a cidr report for use with an iptables filter.  The 
script is dated and may need a little tweaking.  A better alternative 
today, may be to use ipset.


On 04/08/2013 05:02 AM, Andy Barnhart wrote:
> I get around 20M on speedtest, but NetFlix often buffers/degrades and
> Google Play movies take much longer to download than the math accounts
> for.  I have TWC.
> On Apr 7, 2013 10:22 PM, "Bill Farrow" <bill at arrowsreach.com> wrote:
>
>> Hulu started buffering every few minutes tonight, so I started
>> investigating again...
>>
>> Here is some more discussion:
>>
>> http://www.reddit.com/r/technology/comments/13kmvd/have_time_warner_internet_but_can_barely_stream/
>>
>> Bill
>> --
>> This message was sent to: andy <arbarnhart at gmail.com>
>> To unsubscribe, send a blank message to trilug-leave at trilug.org from that
>> address.
>> TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug
>> Unsubscribe or edit options on the web  :
>> http://www.trilug.org/mailman/options/trilug/arbarnhart%40gmail.com
>> TriLUG FAQ          :
>> http://www.trilug.org/wiki/Frequently_Asked_Questions
>>