Re: Retalitory DDoS

[Mike Hammett <nanog () ics-il net>]

In my case, it was against a server not on my own network, so my impact was a blackhole for an hour at 4 AM local time. 
I likely wouldn't have even noticed it, had I not received the threat email, nor the ticket my web host's NOC opened. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

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

From: "Jean St-Laurent" <jean () ddostest me> 
To: "Mike Hammett" <nanog () ics-il net>, "NANOG list" <nanog () nanog org> 
Sent: Monday, February 8, 2021 11:42:12 AM 
Subject: RE: Retalitory DDoS 



Nice report, 

If you would have to pick up just one vector out of this “multi-vector” attack, which one seems to be the one that had 
the bigger effect on your network or service? 

Was it degraded or total service interruption? 

Jean 



From: NANOG <nanog-bounces+jean=ddostest.me () nanog org> On Behalf Of Mike Hammett 
Sent: February 8, 2021 8:43 AM 
To: NANOG list <nanog () nanog org> 
Subject: Re: Retalitory DDoS 


Mike, 

I've attached the full information we got from our DDOS protection system below. 

We had a large number of ping loss and data loss tickets begin opening up for devices sharing the cabinet chi18-313. 
The high traffic and interference was determined to be caused by incoming traffic to the ip address [Not hard to find, 
but redacted anyway]. Our network engineers will be back in after 9am until 5pm CST. They have greater access to the 
network and may be able to give you more details. 

Location : Chicago 
Event Time : 2021-02-08 04:17:38 CST (-0600) 
Destination IP: [Not hard to find, but redacted anyway] 
Traffic : 2520 Mbps 382880 pps 
Fragmentation : 11% 
Top Transport Protocol: 
. 99% Protocol # 17 (UDP) 
TCP Flag: SYN: 100% ACK: 0% RST: 0% FIN: 0% 
Top Source Port: 
. 61% Port # 3702 
. 38% Port # 0 
Top Destination Port: 
. 38% Port # 0 
. 14% Port # 45934 
. 9% Port # 23680 
. 8% Port # 35023 
. 7% Port # 25966 
Top Source IP: 
. 0% 112.164.127.17 
Number of unique IP: 7110 
Total Bytes : 1259961437 
Total Packets : 1531559 
Duration : 4s 
Report Run Time : 151.3ms 

The 30 day null route count is: 0 
Number of hours to null route : 1 

Location : Chicago 
Event Time : 2021-02-08 04:02:38 CST (-0600) 
Destination IP: [Not hard to find, but redacted anyway] 
Traffic : 1817 Mbps 275483 pps 
Fragmentation : 13% 
Top Transport Protocol: 
. 99% Protocol # 17 (UDP) 
TCP Flag: SYN: 99% ACK: 0% RST: 0% FIN: 0% 
Top Source Port: 
. 56% Port # 3702 
. 43% Port # 0 
Top Destination Port: 
. 43% Port # 0 
. 19% Port # 25966 
. 19% Port # 35023 
. 17% Port # 23680 
Top Source IP: 
. 0% 90.49.167.239 
Number of unique IP: 3577 
Total Bytes : 953894831 
Total Packets : 1157017 
Duration : 4.199s 
Report Run Time : 306.8ms 

The 30 day null route count is: 0 
Number of hours to null route : 1 


Liam Doring 
Systems Administrator 



----- 
Mike Hammett 
Intelligent Computing Solutions 
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Midwest Internet Exchange 
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The Brothers WISP 
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----- Original Message -----


From: "Mike Hammett" <nanog () ics-il net> 
To: "NANOG list" <nanog () nanog org> 
Sent: Monday, February 8, 2021 5:46:26 AM 
Subject: Retalitory DDoS 


Is there a club for people that have been DDoSed? If so, count me in. 



This one was directed at me (as opposed to one of my customers) because I got an e-mail explaining why I was getting 
DDoSed. Is that aspect common? 



There were also some racial and sexual accusations that were made that clearly aren't true and just speak to the 
intelligence of people like this. 



Is it safe to assume that they completely anonymized the email they sent to me? 



Is there anyone I should be reporting this to? 



I thought my site was running in Cloudflare, but my individual server was still attacked, so I gotta figure out where I 
screwed that up. 




https://www.dropbox.com/s/rrrx90jvy09h26s/ICS%20DDoS.png?dl=0 



----- 
Mike Hammett 
Intelligent Computing Solutions 
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Midwest Internet Exchange 
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The Brothers WISP 
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