The menace came from below - Hack.lu

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$\H1B%-12345X@PJL JOB “HackingPrinters”$

Eric Leblond a.k.a Regit French Network security expert Free Software enthousiast NuFW project creator (Now ufwi), EdenWall co-founder Netfilter developer: Ulogd2: Netfilter logging daemon Misc contributions: NFQUEUE library and associates Source NAT randomisation (defeat Kaminsky’s DNS attack) Currently: Independant security consultant Suricata IDS/IPS funded developer Éric Leblond, Victor Julien (OISF) The menace came from below Hack.lu 2012 2 / 66
Victor Julien a.k.a Inliniac Dutch Open Source Developer and Contractor Vuurmuur Firewall project creator Suricata IDS/IPS lead developer Éric Leblond, Victor Julien (OISF) The menace came from below Hack.lu 2012 3 / 66
Page 1: The menace came from below Éric Le
Page 5 and 6: Suricata Features High performance,
Page 7 and 8: 1 Introduction Netfilter and the Co
Page 9 and 10: Netfilter Definition Packet filteri
Page 11 and 12: Application Level Gateway Non-linea
Page 13 and 14: The example of FTP FTP client Logge
Page 15 and 16: The example of FTP FTP client Logge
Page 17 and 18: Details of Netfilter implementation
Page 19 and 20: Do I use helpers? What happens if I
Page 21 and 22: Do I use helpers? What happens if I
Page 23 and 24: Global analysis Sane defaults Dange
Page 25 and 26: FTP analysis If we follow RFC (loos
Page 27 and 28: IRC analysis The DCC command DCC co
Page 29 and 30: Using DCC command Client NATed behi
Page 31 and 32: Using DCC command Client NATed behi
Page 33 and 34: Demonstration of DCC usage Video Le
Page 35 and 36: Objective Determine if it is possib
Page 37 and 38: Attack description Existing attacks
Page 39 and 40: Attack description Existing attacks
Page 41 and 42: Attack description for FTP 1 The at
Page 47 and 48: Demonstration on Netfilter Video É
Page 49 and 50: Policy violation We’ve manage to
Page 51 and 52: Policy violation We’ve manage to
Page 53 and 54:
Counter-measures Anti-spoofing is s
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Counter-measures Anti-spoofing is s
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Checkpoint setup Checkpoint absolut
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Demonstration setup Éric Leblond,
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Demonstration setup Let’s do a fi
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Demonstration Video Let’s have a
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Policy violation One managed to ope
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There is no problem Swift reaction
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Others protocols IRC As discussed b
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1 Introduction Netfilter and the Co
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Protection for Netfilter We only ha
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IPv6 protection for Netfilter Since
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IPv6 protection for Netfilter The b
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Suricata Rules Largely compatible w
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Suricata Rules Largely compatible w
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Counter measures on Suricata FTP in
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Detecting overlapping data Rule Att
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Detect FTP injection - step 1 Rule
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Detect FTP injection - step 3 Rule
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Detect FTP injection - port Rule In
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Luajit script Simplified Script f u
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Protocol analysis: a difficult task
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Example of nDPI History Originally
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Causing recognition mistake Evading
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Don’t mess with the server Issue
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Implementing the attack in opensvp
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Attack on nDPI Test used Injection
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Detecting very low TTL Example TTL
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Future changes in Suricata We’re
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Using low layer to attack Low layer
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SNMP: Security is Not My Problem Ke
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Questions Thanks to Do you have any
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The menace came from below - Hack.lu

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