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What and Who
Title:Amplification DDoS: Abusing 30-Year-Old Internet Protocols for Denial-of-Service Attacks
Speaker:Christian Rossow
coming from:Cluster of Excellence - Multimodal Computing and Interaction - MMCI
Speakers Bio:
Event Type:Joint Lecture Series
Visibility:D1, D2, D3, D4, D5, SWS, RG1, MMCI
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Level:Public Audience
Date, Time and Location
Date:Wednesday, 5 November 2014
Duration:60 Minutes
Building:E1 5
In amplification denial-of-service, adversaries send requests to public
servers (e.g., open recursive DNS resolvers) and spoof the IP address of
a victim. These servers, in turn, flood the victim with valid responses
and - unknowingly - exhaust its bandwidth. In 2014, such abuses have
lead to highly critical attack bandwidths of 400 Gbps.

We revisit popular protocols of common network services, online games,
P2P filesharing networks and P2P botnets in order to assess their
security against such abuse. We explore how the threat of amplification
attacks can be mitigated and illustrate our security notification
efforts for the Network Time Protocol (NTP). As an outlook to the
future, we present our ongoing research that aims to track down the
actual sources of spoofed traffic.
Name(s):Jennifer Müller
EMail:--email address not disclosed on the web
Video Broadcast
Video Broadcast:NoTo Location:
Tags, Category, Keywords and additional notes
Attachments, File(s):
  • Christian Klein, 10/13/2016 05:12 PM
  • Jennifer Müller, 10/27/2014 01:32 PM
  • Jennifer Müller, 09/22/2014 11:06 AM -- Created document.