No, but only because I don't know how. If I knew how, I would. Hopefully 
someone else can contribute that. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 




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

From: "Sean Heskett" <af...@zirkel.us> 
To: af@afmug.com 
Sent: Friday, October 21, 2016 12:25:54 PM 
Subject: Re: [AFMUG] Another large DDoS, Stop Being a Dick 


we use all imagestream routers at our towers and we have a Juniper MX104 at our 
10gig circuit. 


would you be able to re-write those rules for iptables?? 


Thanks! 


-sean 




On Fri, Oct 21, 2016 at 11:17 AM, Mike Hammett < af...@ics-il.net > wrote: 




/ip firewall address-list 
add list="Public-IPs" address=x.x.x.x/yy disabled=no comment="My IPs" 
add list="Public-IPs" address=x.x.x.x/yy disabled=no comment="Downstream 
customer X IPs" 

/ip firewall filter 
add action=drop chain=forward comment="Drop spoofed traffic" disabled=no 
out-interface="To-Upstream" dst-address-list=!"Public-IPs" 

That was largely composed off of the top of my head and typed on my phone, so 
it may not be completely accurate. 


You should also do it on customer-facing ports not allowing anything to come 
in, but that would be best approached once Mikrotik and the per interface 
setting for unicast reverse path filtering. You would then said customer facing 
interfaces to strict and all other interfaces to loose. They accepted the 
feature request, just haven't implemented it yet. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 






From: "Mike Hammett" < af...@ics-il.net > 
To: af@afmug.com 
Sent: Friday, October 21, 2016 11:21:35 AM 
Subject: [AFMUG] Another large DDoS, Stop Being a Dick 


There's another large DDoS going on now. Go to this page to see if you can be 
used for UDP amplification (or other spoofing) attacks: 

https://www.caida.org/projects/spoofer/ 

Go to these pages for more longer term bad behavior monitoring: 

https://www.shadowserver.org/wiki/ 
https://radar.qrator.net/ 


Maybe we need to start a database of ASNs WISPs are using and start naming and 
shaming them when they have bad actors on their network. This is serious, 
people. Take it seriously. 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 










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