Original title: Filtrování a agregace síťového provozu
Translated title: Filtering and aggregation of network traffic
Authors: Zubov, Artem ; Blažek, Petr (referee) ; Martinásek, Zdeněk (advisor)
Document type: Master’s theses
Year: 2017
Language: eng
Publisher: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií
Abstract: [eng] [cze]
V této práci jsou zkoumaní základní principy odporů servisních útoků, nejběžnějších typů a účelu použití. Popsané dostupné techniky zmírnění různých typu útoků, nástrojů a přístupů v operačních systémech postavených na Linuxu. Nakonfigurován filtrcni server a pro účely testování simulovan SYN Flood, UDP Flood a ICMP Flood útoky. Bylo zjištěno, vhodne techniky vyrovnání tehto druhu útoku a realizováné příslušna konfigurace filtrování. Purpose of this work is to find, describe and test existing tools and features available in linux-based solution for filtering malicious traffic. As source of malicious traffic taken most widly-used Ddos attacks targeting Web servers. SYN, UDP and ICMP Flood attacks are described and different variants of they mitigation are explained. Available tools for manipulating with traffic, like ebtables and iptables tools are compared, based on each type of attack. Specially created experimental network was used for testing purposes, configured filters servers and bridge. Inspected packets flow through linux kernel network stack along with tuning options serving for increasing filter server traffic throughput. As a result, ebtables tool appears to be most productive, due to less resources it needed to process each packet (frame). Pointed out that separate detecting system is needed for this tool, in order to provide further filtering methods with data. As main conclusion, linux-based solutions provide full functionality for filtering traffic either in stand-alone state or combined with detecting systems.
Keywords: Ddos; Ebtables; Irqbalance.; Netfilter; RPS_cpus; SYN Flood; UDP Flood; Ddos; Ebtables; Irqbalance.; Netfilter; RPS_cpus; SYN Flood; UDP Flood

Institution: Brno University of Technology (web)
Document availability information: Fulltext is available in the Brno University of Technology Digital Library.
Original record: http://hdl.handle.net/11012/65802

Permalink: http://www.nusl.cz/ntk/nusl-554194


The record appears in these collections:
Universities and colleges > Public universities > Brno University of Technology
Academic theses (ETDs) > Master’s theses