Pavel, what kind of resources does the analysis of a 100G circuit require? Or is it just counting packets? On Tue, Jul 21, 2015 at 8:11 AM, Pavel Odintsov <pavel.odintsov@gmail.com> wrote:
You could do SQC with FastNetMon. We have per subnet / per host and per protocol counters. We are working on multi 100GE mode very well :)
Has anyone tried to implement real-time SQC in their network? You can calculate summary statistics and use math to determine if traffic is "normal" or if there's a chance it's garbage. You won't be able to notice one-off attacks, but anything that repeats enough times should pop up. Facebook uses similar technology to figure out what kind of useless news to display on your feed.
In summary, instead of blocking an entire country, we should be able to analyze traffic as it comes, and determine a DDoS attack without human intervention.
On Tue, Jul 21, 2015 at 7:43 AM, Jared Mauch <jared@puck.nether.net> wrote:
On Tue, Jul 21, 2015 at 08:09:56AM -0400, Curtis Maurand wrote:
DNS is still largely UDP.
Water is also still wet :) - but you may not be doing 10% of your links as UDP/53.
DNS can also use TCP as well, including sending more than one query in a pipelined fashion.
The challenge that Cameron is trying to document here is when seeing large volumes of UDP it becomes necessary to do something to keep the network up. This response is frustrating for
of us who prefer to have a unfiltered e2e network but maintaining the network as up in the face of these adverse conditions is important.
- Jared
--Curtis
On 7/20/2015 5:40 PM, Ca By wrote:
Folks, it may be time to take the next step and admit that UDP is
too
broken to support
https://tools.ietf.org/html/draft-byrne-opsec-udp-advisory-00
Your comments have been requested
On Mon, Jul 20, 2015 at 8:57 AM, Drew Weaver <drew.weaver@thenap.com
wrote:
Has anyone else seen a massive amount of illegitimate UDP 1720
On Tue, Jul 21, 2015 at 4:07 PM, Rafael Possamai <rafael@gav.ufsc.br> wrote: those traffic
coming from China being sent towards IP addresses which provide VoIP services?
I'm talking in the 20-30Gbps range?
The first incident was yesterday at around 13:00 EST, the second incident was today at 09:00 EST.
I'm assuming this is just another DDoS like all others, but I would be interested to hear if I am not the only one seeing this.
On list or off-list is fine.
Thanks, -Drew
-- Best Regards Curtis Maurand Principal Xyonet Web Hosting mailto:cmaurand@xyonet.com http://www.xyonet.com
-- Jared Mauch | pgp key available via finger from jared@puck.nether.net clue++; | http://puck.nether.net/~jared/ My statements are only mine.
-- Sincerely yours, Pavel Odintsov