'Monitor mode' diaporamas de présentation

DefCon 22

DefCon 22. Wireless Penetration Testing a nd How to WCTF. RF Pentesting Platforms. Internet access S martPhone with USB tether (wifi/BT could be an issue) Laptop (MAC or PC) Multi core processor 8 GB ram or more* (16Gb+ optimal) Hard drive space for all necessary apps and VMs

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Security in Wireless Local Area Networks

Security in Wireless Local Area Networks. CENG410. Definitions. WiFi : IEEE 802.11 standard for Wireless Local Area Networks WEP: Wired Equivalent Privacy WPA: Wi-Fi Protected Access Ethernet: IEEE 802.3 standard for Wired Local Area Networks WLAN: Wireless Local Area Network. WEP.

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Mitigating Egregious ACK Delays in Cellular Data Networks by Eliminating TCP ACK Clocking

Mitigating Egregious ACK Delays in Cellular Data Networks by Eliminating TCP ACK Clocking. Wai Kay Leong, Yin Xu , Ben Leong, Zixiao Wang National University of Singapore. Asymmetry in Cellular Networks. Congestion in Uplink Concurrent Upload RSFC [ Xu et al. 2012 ] Other Users.

572 views • 36 slides

Tutorial Introduction

Tutorial Introduction. PURPOSE To explain how to configure and program the 68HC08 family FLASH memory. OBJECTIVES: Describe the features and uses of FLASH memory. Identify the steps to perform erase and programming operations. Describe the methods for programming a blank part.

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Computer-System Structures

Computer-System Structures. General System Architecture and I/O. Input/Output Architecture. Computer-System Operation. I/O devices and the CPU can execute concurrently. Each device controller is in charge of a particular device type. Each device controller has a local buffer.

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Hands-On Ethical Hacking and Network Defense

Hands-On Ethical Hacking and Network Defense. Lecture 14 Cracking WEP. Last modified 5-11-09. Legal Concerns. Defeating security to enter a network without permission is clearly illegal Even if the security is weak Sniffing unencrypted wireless traffic may also be illegal

318 views • 31 slides

Virtual Machine Concepts

Virtual Machine Concepts. Virtual Machine Structure. Application Programs - can call system pgms System Programs - can use system calls, hw instructions; treats sys calls and hw as same level Kernel - translates hardware instructions to system calls Hardware. Virtual Machine.

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Instruction Set Architectures

Instruction Set Architectures. Early trend was to add more and more instructions to new CPUs to do elaborate operations VAX architecture had an instruction to multiply polynomials! RISC philosophy ( Cocke IBM, Patterson, Hennessy, 1980s): Reduced Instruction Set Computing

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Chapter 9

Chapter 9. Subroutines and TRAPs Privileged Instructions TRAP Routines Subroutines. Privileged Instructions. There are several instructions that are best executed by a supervisor program (OS) rather than a user program: IO instructions Loading of memory-mapped registers

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The Trouble with WEP

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Welcome to OS Class!

Welcome to OS Class!. Syllabus. Meet Neighbors Be Laid back Ask ????. What is an O.S.? (Definition #1). The kernel. Book says kernel like a government -- decided allocation of resources. Deciding allocations and handling concepts central to O.S. Also provides hardware abstraction.

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Attack and Defense in Wireless Networks

Attack and Defense in Wireless Networks. Presented by Aleksandr Doronin. Outline. Wireless Networks and Security Attacking and defending WEP Attacking and defending WPA/WPA2 Common defense techniques Summary. Wireless Networks and Security. 1) What are Wireless Networks?

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II. Computer System Structure

PROBLEM PROG. LOGICAL IOCS. PHYSICAL IOCS. INPUT DEVICE. (channel scheduler). Provide record and return to prob. prog. Determine channel if channel busy then return to logical IOCS. Issue GET. Next instruction. OR IF I/O required WAIT. I/O START. If channel not busy

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Wireless Network Attacks: Tools, Attack Vectors, and Solutions.

Wireless Network Attacks: Tools, Attack Vectors, and Solutions. By: Thomas Vaccaro. Hardware Antenna - yagi, lpda, omni and amplifiers - how amplifiers work NIC - monitor mode, primiscous mode Hack RF one Wifi pineapple Software Aircrack-ng - wifi crack Cain and abel - windows password

139 views • 10 slides