On 1 Aug 2016, at 23:08, Markus Koch niftybunny@googlemail.com wrote:
Looks like DOS/DDOS.Is it even possible to DDOS over tor?
It's possible to (D)DOS any server using ping (or DNS, or any other UDP responder). All an attacker needs is the server's IP address, which is publicly available in the Tor consensus. Then they can attack the relay from the Internet.
There's no need to use Tor to tunnel the (D)DOS. In this case, Tor doesn't tunnel UDP, so it's unlikely to be the culprit.
Tim
2016-08-01 15:04 GMT+02:00 pa011 pa011@web.de:
yes about the same - sorry for the page brake dont get it solved in my thunderbird
h rx (KiB) tx (KiB) h rx (KiB) tx (KiB) h rx (KiB) tx (KiB) 23 6.559.929 6.748.215 07 4.697.285 4.845.893 15 35.106.193 35.833.114 00 5.129.384 5.289.456 08 12.317.567 12.605.726 16 0 0 01 3.709.181 3.843.988 09 14.913.172 15.278.079 17 0 0 02 4.405.017 4.574.745 10 22.218.874 22.738.508 18 102.138 144.732 03 4.670.091 4.817.785 11 25.700.571 26.306.505 19 275.999 340.633 04 4.711.807 4.853.921 12 32.840.796 33.571.996 20 271.278 382.087 05 4.269.354 4.408.417 13 32.910.527 33.637.092 21 263.147 383.444 06 5.279.142 5.443.890 14 40.052.678 40.824.138 22 176.040 258.865
Am 01.08.2016 um 14:51 schrieb Markus Koch:
In and outgoing traffic is the same size?
2016-08-01 14:44 GMT+02:00 pa011 pa011@web.de:
The ISP didn’t mention - I would have to ask.
What I saw was that the traffic was up about linear from usually 30Mbits to above 100 Mbits over about 6 hours, bringing the CPU to 100% and dropping.
Am 01.08.2016 um 14:36 schrieb Markus Koch:
How many packets per second?
Markus
2016-08-01 14:28 GMT+02:00 pa011 pa011@web.de:
Hello,
one of my middle relays got auto limited by the ISP because of "outgooing UDP flooding ".
The VPS is pure debian8, fail2ban, pub key and nothing else installed - so I highly doubt the give reason for the traffic limitation. Also I cant find anything in the log files.
Anybody having experience with such an issue? What to check for please?
Paul
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Tim Wilson-Brown (teor)
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