<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.gmail-m4882991795613443425object
{mso-style-name:gmail-m_4882991795613443425object;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Good analyze Hugo,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I believe that all of this volumetric attack is just noise to hide the real attack that really killed your webserver.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:13.5pt;font-family:"Courier New";color:black;background:white'>TCP Flag: SYN: 100%<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:13.5pt;font-family:"Courier New";color:black;background:white'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I would start with this line and I agree that Roland’s deck might have something about SYN flood.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:13.5pt;font-family:"Courier New";color:black;background:white'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Jean<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> Hugo Slabbert <hugo@slabnet.com> <br><b>Sent:</b> February 8, 2021 2:19 PM<br><b>To:</b> Compton, Rich A <Rich.Compton@charter.com><br><b>Cc:</b> Mike Hammett <nanog@ics-il.net>; Jean St-Laurent <jean@ddostest.me>; NANOG list <nanog@nanog.org><br><b>Subject:</b> Re: [EXTERNAL] Re: Retalitory DDoS<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Was gonna come to add that. That and maybe some UDP frags.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=MsoNormal>You may want to have your hosting provider block all inbound traffic from reaching your server IP except TCP port 443 (or 80 or whatever port you actually use) somewhere upstream. <o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Can also consider dropping by UDP source port on that 3072 and other common reflection vectors if you've got UDP-based destinations to deal with. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The SYN floods are a different beast; though probably not volumetric, needs enough capacity (TCP reverse proxies / LBs / etc) to handle that and possibly things like SYN cookies. I'll let folks more versed than myself answer there, though. Roland probably has a deck ready to link ;)<o:p></o:p></p></div><div><div><div><div><div><div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-family:"Courier New"'>-- </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-family:"Courier New"'>Hugo Slabbert | email, xmpp/jabber: <a href="mailto:hugo@slabnet.com" target="_blank">hugo@slabnet.com</a></span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-family:"Courier New"'>pgp key: B178313E | also on Signal</span><o:p></o:p></p></div></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Feb 8, 2021 at 10:10 AM Compton, Rich A <<a href="mailto:Rich.Compton@charter.com">Rich.Compton@charter.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:12.0pt'>FYI, that looks like a Web Services Dynamic Discovery UDP amplification DDoS attack. <a href="https://blogs.akamai.com/sitr/2019/09/new-ddos-vector-observed-in-the-wild-wsd-attacks-hitting-35gbps.html" target="_blank">https://blogs.akamai.com/sitr/2019/09/new-ddos-vector-observed-in-the-wild-wsd-attacks-hitting-35gbps.html</a> Very easily executed by a booter service.</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:12.0pt'>You may want to have your hosting provider block all inbound traffic from reaching your server IP except TCP port 443 (or 80 or whatever port you actually use) somewhere upstream. This can help reduce the impact of DDoS attacks on your server. </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:12.0pt'> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:12.0pt'>-Rich</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:12.0pt'> </span><span lang=EN-US><o:p></o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-US style='font-size:12.0pt;color:black'>From: </span></b><span lang=EN-US style='font-size:12.0pt;color:black'>NANOG <nanog-bounces+rich.compton=<a href="mailto:charter.com@nanog.org" target="_blank">charter.com@nanog.org</a>> on behalf of Mike Hammett <<a href="mailto:nanog@ics-il.net" target="_blank">nanog@ics-il.net</a>><br><b>Date: </b>Monday, February 8, 2021 at 10:58 AM<br><b>To: </b>Jean St-Laurent <<a href="mailto:jean@ddostest.me" target="_blank">jean@ddostest.me</a>><br><b>Cc: </b>NANOG list <<a href="mailto:nanog@nanog.org" target="_blank">nanog@nanog.org</a>><br><b>Subject: </b>[EXTERNAL] Re: Retalitory DDoS</span><span lang=EN-US><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> <o:p></o:p></span></p></div><div style='border:solid #5A5A5A 1.0pt;padding:2.0pt 2.0pt 2.0pt 2.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:12.0pt;background:#235C70'><strong><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri",sans-serif;color:white'>CAUTION:</span></strong><span lang=EN-US style='font-size:10.0pt;color:white'> The e-mail below is from an external source. Please exercise caution before opening attachments, clicking links, or following guidance. </span><span lang=EN-US><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>I don't have RTBH, no. It's just a web server.<br><br>Now how my hosting provider handled it, I'm not sure. I don't know if they just dropped me internally, or if they used RTBH with their upstreams and peers. Only being 2.5 gigs, that should be well within their ability to handle internally, but I guess why would you if you didn't have to?</span><span lang=EN-US><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:13.5pt;font-family:"Times New Roman",serif;color:black'><br><br>-----<br>Mike Hammett<br></span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><a href="http://www.ics-il.com/" target="_blank"><span style='font-size:13.5pt;font-family:"Times New Roman",serif'>Intelligent Computing Solutions</span></a></span><span lang=EN-US style='font-size:13.5pt;font-family:"Times New Roman",serif;color:black'><br></span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><a href="https://www.facebook.com/ICSIL" target="_blank"><span style='color:black;text-decoration:none'><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Midwest Internet Exchange</span></u><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>The Brothers WISP</span></u><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p></o:p></span><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><hr size=1 width="100%" align=center></span></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>From: </span></b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>"Jean St-Laurent" <<u><span style='color:blue'>jean@ddostest.me</span></u>><br><b>To: </b>"Mike Hammett" <<u><span style='color:blue'>nanog@ics-il.net</span></u>><br><b>Cc: </b>"NANOG list" <<u><span style='color:blue'>nanog@nanog.org</span></u>><br><b>Sent: </b>Monday, February 8, 2021 11:53:43 AM<br><b>Subject: </b>RE: Retalitory DDoS</span><span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>You got RTBH?<span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> Mike Hammett <<u><span style='color:blue'>nanog@ics-il.net</span></u>> <br><b>Sent:</b> February 8, 2021 12:50 PM<br><b>To:</b> Jean St-Laurent <<u><span style='color:blue'>jean@ddostest.me</span></u>><br><b>Cc:</b> NANOG list <<u><span style='color:blue'>nanog@nanog.org</span></u>><br><b>Subject:</b> Re: Retalitory DDoS<span style='color:windowtext'><o:p></o:p></span></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>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.</span><span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br><br>-----<br>Mike Hammett<br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Intelligent Computing Solutions</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Midwest Internet Exchange</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>The Brothers WISP</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='color:windowtext'><o:p></o:p></span><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><hr size=1 width="100%" align=center></span></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>From: </span></b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>"Jean St-Laurent" <<u><span style='color:blue'>jean@ddostest.me</span></u>><br><b>To: </b>"Mike Hammett" <<u><span style='color:blue'>nanog@ics-il.net</span></u>>, "NANOG list" <<u><span style='color:blue'>nanog@nanog.org</span></u>><br><b>Sent: </b>Monday, February 8, 2021 11:42:12 AM<br><b>Subject: </b>RE: Retalitory DDoS</span><span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Nice report,<span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>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?<span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Was it degraded or total service interruption?<span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Jean<span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> NANOG <nanog-bounces+jean=<u><span style='color:blue'>ddostest.me@nanog.org</span></u>> <b>On Behalf Of </b>Mike Hammett<br><b>Sent:</b> February 8, 2021 8:43 AM<br><b>To:</b> NANOG list <<u><span style='color:blue'>nanog@nanog.org</span></u>><br><b>Subject:</b> Re: Retalitory DDoS<span style='color:windowtext'><o:p></o:p></span></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='font-size:13.5pt;font-family:"Courier New";background:white'>Mike,</span><span style='font-size:13.5pt;font-family:"Courier New"'><br><br><span style='background:white'>I've attached the full information we got from our DDOS protection system below.</span><br><br><span style='background:white'>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.</span><br><br><span style='background:white'>Location : Chicago</span><br><span style='background:white'>Event Time : </span><span class=gmail-m4882991795613443425object>2021-02-08</span><span style='background:white'> 04:17:38 CST (-0600)</span><br><span style='background:white'>Destination IP: [Not hard to find, but redacted anyway]</span><br><span style='background:white'>Traffic : 2520 Mbps 382880 pps</span><br><span style='background:white'>Fragmentation : 11%</span><br><span style='background:white'>Top Transport Protocol:</span><br><span style='background:white'>. 99% Protocol # 17 (UDP)</span><br><span style='background:white'>TCP Flag: SYN: 100% ACK: 0% RST: 0% FIN: 0%</span><br><span style='background:white'>Top Source Port:</span><br><span style='background:white'>. 61% Port # 3702</span><br><span style='background:white'>. 38% Port # 0</span><br><span style='background:white'>Top Destination Port:</span><br><span style='background:white'>. 38% Port # 0</span><br><span style='background:white'>. 14% Port # 45934</span><br><span style='background:white'>. 9% Port # 23680</span><br><span style='background:white'>. 8% Port # 35023</span><br><span style='background:white'>. 7% Port # 25966</span><br><span style='background:white'>Top Source IP:</span><br><span style='background:white'>. 0% 112.164.127.17</span><br><span style='background:white'>Number of unique IP: 7110</span><br><span style='background:white'>Total Bytes : </span><u><span style='color:blue'>1259961437</span></u><br><span style='background:white'>Total Packets : 1531559</span><br><span style='background:white'>Duration : 4s</span><br><span style='background:white'>Report Run Time : 151.3ms</span><br><br><span style='background:white'>The 30 day null route count is: 0</span><br><span style='background:white'>Number of hours to null route : 1</span><br><br><span style='background:white'>Location : Chicago</span><br><span style='background:white'>Event Time : </span><span class=gmail-m4882991795613443425object>2021-02-08</span><span style='background:white'> 04:02:38 CST (-0600)</span><br><span style='background:white'>Destination IP: [Not hard to find, but redacted anyway]</span><br><span style='background:white'>Traffic : 1817 Mbps 275483 pps</span><br><span style='background:white'>Fragmentation : 13%</span><br><span style='background:white'>Top Transport Protocol:</span><br><span style='background:white'>. 99% Protocol # 17 (UDP)</span><br><span style='background:white'>TCP Flag: SYN: 99% ACK: 0% RST: 0% FIN: 0%</span><br><span style='background:white'>Top Source Port:</span><br><span style='background:white'>. 56% Port # 3702</span><br><span style='background:white'>. 43% Port # 0</span><br><span style='background:white'>Top Destination Port:</span><br><span style='background:white'>. 43% Port # 0</span><br><span style='background:white'>. 19% Port # 25966</span><br><span style='background:white'>. 19% Port # 35023</span><br><span style='background:white'>. 17% Port # 23680</span><br><span style='background:white'>Top Source IP:</span><br><span style='background:white'>. 0% 90.49.167.239</span><br><span style='background:white'>Number of unique IP: 3577</span><br><span style='background:white'>Total Bytes : 953894831</span><br><span style='background:white'>Total Packets : 1157017</span><br><span style='background:white'>Duration : 4.199s</span><br><span style='background:white'>Report Run Time : 306.8ms</span><br><br><span style='background:white'>The 30 day null route count is: 0</span><br><span style='background:white'>Number of hours to null route : 1</span><br><br><span style='background:white'> </span><br><span style='background:white'>Liam Doring</span><br><span style='background:white'>Systems Administrator</span></span><span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br><br>-----<br>Mike Hammett<br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Intelligent Computing Solutions</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Midwest Internet Exchange</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>The Brothers WISP</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='color:windowtext'><o:p></o:p></span><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><hr size=1 width="100%" align=center></span></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>From: </span></b><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif'>"Mike Hammett" <<u><span style='color:blue'>nanog@ics-il.net</span></u>><br><b>To: </b>"NANOG list" <<u><span style='color:blue'>nanog@nanog.org</span></u>><br><b>Sent: </b>Monday, February 8, 2021 5:46:26 AM<br><b>Subject: </b>Retalitory DDoS</span><span style='color:windowtext'><o:p></o:p></span></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif;background:white'>Is there a club for people that have been DDoSed? If so, count me in.</span><span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>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?</span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>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.</span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Is it safe to assume that they completely anonymized the email they sent to me?</span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Is there anyone I should be reporting this to?</span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>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.</span><span style='color:windowtext'><o:p></o:p></span></p></div></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='color:blue'>https://www.dropbox.com/s/rrrx90jvy09h26s/ICS%20DDoS.png?dl=0</span></u></span><span style='color:windowtext'><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br><br>-----<br>Mike Hammett<br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Intelligent Computing Solutions</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>Midwest Internet Exchange</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><u><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:blue'>The Brothers WISP</span></u></span><span style='font-size:13.5pt;font-family:"Times New Roman",serif'><br></span><span style='color:windowtext'><o:p></o:p></span><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial",sans-serif'> </span><span style='color:windowtext'><o:p></o:p></span></p></p><p class=MsoNormal><span style='color:windowtext'>The contents of this e-mail message and <br>any attachments are intended solely for the <br>addressee(s) and may contain confidential <br>and/or legally privileged information. If you<br>are not the intended recipient of this message<br>or if this message has been addressed to you <br>in error, please immediately alert the sender<br>by reply e-mail and then delete this message <br>and any attachments. If you are not the <br>intended recipient, you are notified that <br>any use, dissemination, distribution, copying,<br>or storage of this message or any attachment <br>is strictly prohibited.<o:p></o:p></span></p></div></div></div></p></div></div></div></p></div></div></div></span></a></span></p></div></div></div></div></blockquote></div></div></body></html>