nanog mailing list archives

Re: backbones filtering unsanctioned sites


From: Jason Canady <jason () unlimitednet us>
Date: Sat, 11 Feb 2017 17:40:37 -0500

Cogent's best friend to the rescue: http://bgp.he.net/ip/104.31.18.30#_dns

Looks like mostly proxy/torrent sites on that IP address.

-- 

Jason Canady
Unlimited Net, LLC
Responsive, Reliable, Secure

On 2/11/17 5:11 PM, Marco Teixeira wrote:
So... i doubt CloudFlare allocates one ip per domain served... which means
Cogent customers will be unable to access other CloudFlare proxied site,
served by this same IP, for a particular geographic zone?


---
Marco



On Sat, Feb 11, 2017 at 8:44 PM, Alistair Mackenzie <magicsata () gmail com>
wrote:

Cogent confirmed on the phone that they are the ones who put the blackhole
in place. This is after they closed our ticket twice without response.

Purposely didn't mention a website in the ticket yet they asked on the
phone if it was regarding thepiratebay so they are very aware of this...

On 11 February 2017 at 15:18, Bryan Holloway <bryan () shout net> wrote:

Yup, they do indeed. And for fun, I black-listed one of our IPs, and sure
enough, the next-hop shows up as 10.255.255.255, and the communities are
the same aside from what appear to be regional things.

--

BGP routing table entry for 66.253.214.90/32, version 638637516
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x820
  23473
    10.255.255.255 (metric 10177050) from 154.54.66.21 (154.54.66.21)
      Origin IGP, localpref 150, valid, internal, best
      Community: 174:990 174:20912 174:21001 174:22013
      Originator: 66.28.1.228, Cluster list: 154.54.66.21, 66.28.1.9



On 2/10/17 1:49 PM, Alistair Mackenzie wrote:

Cogent also have a blackhole route-server that they will provide to you
to
announce /32's for blackholing.

The address for this is 66.28.1.228 which is the originator for the
104.31.19.30/3 <http://104.31.19.30/32>2 and 104.31.18.30/32 routes.


On 10 February 2017 at 18:46, Jason Rokeach <jason () rokeach net> wrote:

This looks pretty intentional to me.  From
http://www.cogentco.com/en/network/looking-glass:

BGP routing table entry for 104.31.18.30/32, version 611495773
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Local
    10.255.255.255 (metric 10177050) from 154.54.66.21 (154.54.66.21)
      Origin IGP, metric 0, localpref 150, valid, internal, best
      Community: 174:990 174:20912 174:21001
      Originator: 66.28.1.228, Cluster list: 154.54.66.21, 66.28.1.9

BGP routing table entry for 104.31.19.30/32, version 611495772
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Local
    10.255.255.255 (metric 10177050) from 154.54.66.21 (154.54.66.21)
      Origin IGP, metric 0, localpref 150, valid, internal, best
      Community: 174:990 174:20912 174:21001
      Originator: 66.28.1.228, Cluster list: 154.54.66.21, 66.28.1.9


Call it a "hunch" but I doubt 10.255.255.255 is a valid next-hop
router.
On Fri, Feb 10, 2017 at 1:39 PM, Mike Hammett <nanog () ics-il net>
wrote:
Have we determined that this is intentional vs. some screw up?



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

----- Original Message -----

From: "Brielle Bruns" <bruns () 2mbit com>
To: nanog () nanog org
Sent: Friday, February 10, 2017 12:28:53 PM
Subject: Re: backbones filtering unsanctioned sites

On 2/9/17 9:18 PM, Ken Chase wrote:

https://torrentfreak.com/internet-backbone-provider-

cogent-blocks-pirate-bay-and-other-pirate-sites-170209/

/kc


Funny. Someone else got back:

"Abuse cannot not provide you a list of websites that may be
encountering reduced visibility via Cogent"

I almost wish I had a Cogent circuit just to bring this up with an
account rep. Almost.

I'd very much so view this as a contractual violation on Cogent's
part.
Cogent keeps contacting me every year wanting to sell me service. This
will be a good one to bring up when they call me next time.

--
Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org / http://www.ahbl.org





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