Re: [Dots] WGLC for draft-dots-use-cases-19

"Konda, Tirumaleswar Reddy" <TirumaleswarReddy_Konda@McAfee.com> Tue, 06 August 2019 12:52 UTC

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From: "Konda, Tirumaleswar Reddy" <TirumaleswarReddy_Konda@McAfee.com>
To: =?utf-8?B?VMO2bWEgR2F2cmljaGVua292?= <ximaera@gmail.com>
CC: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "Valery Smyslov" <valery@smyslov.net>, "dots@ietf.org" <dots@ietf.org>, "Xialiang (Frank, Network Standard & Patent Dept)" <frank.xialiang@huawei.com>
Thread-Topic: [Dots] WGLC for draft-dots-use-cases-19
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Date: Tue, 6 Aug 2019 12:52:34 +0000
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Subject: Re: [Dots] WGLC for draft-dots-use-cases-19
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From: Töma Gavrichenkov <ximaera@gmail.com>;
Sent: Tuesday, August 6, 2019 5:59 PM
To: Konda, Tirumaleswar Reddy <TirumaleswarReddy_Konda@McAfee.com>;
Cc: mohamed.boucadair@orange.com; Valery Smyslov <valery@smyslov.net>;; dots@ietf.org; Xialiang (Frank, Network Standard & Patent Dept) <frank.xialiang@huawei.com>;
Subject: Re: [Dots] WGLC for draft-dots-use-cases-19


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________________________________
Peace,
On Tue, Aug 6, 2019, 2:52 PM Konda, Tirumaleswar Reddy <TirumaleswarReddy_Konda@mcafee.com<mailto:TirumaleswarReddy_Konda@mcafee.com>> wrote:
When DMS generates the attack traffic information it should include both spoofed and attacker IP addresses (tagged with whether the IP address is spoofed or not).

I must say I don't understand what is the reason behind collecting spoofed IP addresses.  That is, especially with IPv6, an overly massive amount of data to store and transmit, and in 99,999% of cases it has exactly zero value for either attack mitigation or threat intel, b/c you may just generate that from your own /dev/urandom, it'd be of the same quality.


I am referring to reflection attacks (e.g. DNS amplification attack). The other attack could be where the surveillance IP camera's IP address is spoofed, traffic from this IP address is black-listed and it no longer can send feeds to its server (and the attacker can successfully launch a physical attack (e.g. home burglary)). The problem is with the following lines in the offload scenario:


   When the DDoS attack becomes severe
   and the DDoS mitigation system's utilization rate reaches its maximum
   capacity, the DDoS mitigation system can send mitigation requests
   with additional hints such as its blocked traffic information to the
   orchestrator.  Then the orchestrator can take further actions like
   requesting forwarding nodes such as routers to filter the traffic.

-Tiru

--
Töma