หน่วยที่ 5 ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
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This document discusses different types of wireless networks including wireless personal area networks (WPANs), wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs). It describes key aspects of WLANs such as infrastructure and ad-hoc network configurations, common wireless networking standards like 802.11, and security measures for WLANs including firewalls, user authentication, WEP, and WPA encryption.
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5 130923024018-phpapp02
This document discusses different types of wireless networks including wireless personal area networks (WPANs), wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs). It describes key aspects of WLANs such as infrastructure and ad-hoc network configurations, common wireless networking standards like 802.11, and security measures for WLANs including firewalls, user authentication, WEP, and WPA encryption.
หน่วยที่ 5 ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
Wireless networking allows devices to connect to a network without being physically connected with cables. There are different types of wireless networks including Wireless Personal Area Networks (WPANs), Wireless Local Area Networks (WLANs), Wireless Metropolitan Area Networks (WMANs), and Wireless Wide Area Networks (WWANs). Wireless LANs use technologies like 802.11, access points to connect devices within a local area, and can operate in ad-hoc or infrastructure modes. Security measures for wireless networks include firewalls, usernames/passwords, and encryption protocols like WEP and WPA.
หน่วยที่ 5 ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
The document discusses different types of wireless networks including wireless personal area networks (WPANs), wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs). It describes key aspects of WLANs such as infrastructure networks with access points connecting devices to a local area network, ad-hoc peer-to-peer networks without access points, and common WLAN hardware including network cards, access points, and security protocols.
หน่วยที่ 5ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
1. Wireless networks can be used to connect computers, smartphones, and other devices using technologies like Wi-Fi, Bluetooth, and infrared.
2. There are different types of wireless networks including WPAN for personal devices, WLAN for local networks, WMAN for larger areas, and WWAN for worldwide connectivity.
3. Security measures for wireless networks include firewalls, user authentication, data encryption using WEP or WPA keys, and only using approved network adapters.
5.ระบบเครือข่ายคอมพิวเตอร์ไรสาย
This document discusses wireless networks and their applications. It describes wireless personal area networks (WPANs) which connect devices within about 10 meters, including Bluetooth. Wireless local area networks (WLANs) connect devices within a larger area and buildings, about 100 meters, using Wi-Fi standards like 802.11. WLANs use access points to connect to a wired network and can be configured in ad-hoc or infrastructure modes. Mobility and flexibility are key advantages of wireless networks. Security measures that can be applied include firewalls, user authentication, data encryption using WEP or WPA, and limiting access through the network adapter settings.
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over larger areas.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a global system of interconnected computer networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over larger areas.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a global system of interconnected computer networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and
Bluetooth security
This document summarizes Bluetooth security. It begins with an introduction to Bluetooth technology and its history. It then discusses Bluetooth security modes and protocols, including authentication, encryption key generation, and encryption. The document notes some of Bluetooth's most important security weaknesses, such as issues with the encryption algorithms and denial of service attacks. It concludes by listing references for further information on Bluetooth security specifications and research.
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5 130923024018-phpapp02
This document discusses different types of wireless networks including wireless personal area networks (WPANs), wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs). It describes key aspects of WLANs such as infrastructure and ad-hoc network configurations, common wireless networking standards like 802.11, and security measures for WLANs including firewalls, user authentication, WEP, and WPA encryption.
หน่วยที่ 5 ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
Wireless networking allows devices to connect to a network without being physically connected with cables. There are different types of wireless networks including Wireless Personal Area Networks (WPANs), Wireless Local Area Networks (WLANs), Wireless Metropolitan Area Networks (WMANs), and Wireless Wide Area Networks (WWANs). Wireless LANs use technologies like 802.11, access points to connect devices within a local area, and can operate in ad-hoc or infrastructure modes. Security measures for wireless networks include firewalls, usernames/passwords, and encryption protocols like WEP and WPA.
หน่วยที่ 5 ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
The document discusses different types of wireless networks including wireless personal area networks (WPANs), wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), and wireless wide area networks (WWANs). It describes key aspects of WLANs such as infrastructure networks with access points connecting devices to a local area network, ad-hoc peer-to-peer networks without access points, and common WLAN hardware including network cards, access points, and security protocols.
หน่วยที่ 5ระบบเครือข่ายคอมพิวเตอร์ไร้สาย
1. Wireless networks can be used to connect computers, smartphones, and other devices using technologies like Wi-Fi, Bluetooth, and infrared.
2. There are different types of wireless networks including WPAN for personal devices, WLAN for local networks, WMAN for larger areas, and WWAN for worldwide connectivity.
3. Security measures for wireless networks include firewalls, user authentication, data encryption using WEP or WPA keys, and only using approved network adapters.
5.ระบบเครือข่ายคอมพิวเตอร์ไรสาย
This document discusses wireless networks and their applications. It describes wireless personal area networks (WPANs) which connect devices within about 10 meters, including Bluetooth. Wireless local area networks (WLANs) connect devices within a larger area and buildings, about 100 meters, using Wi-Fi standards like 802.11. WLANs use access points to connect to a wired network and can be configured in ad-hoc or infrastructure modes. Mobility and flexibility are key advantages of wireless networks. Security measures that can be applied include firewalls, user authentication, data encryption using WEP or WPA, and limiting access through the network adapter settings.
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over larger areas.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a global system of interconnected computer networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over larger areas.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a global system of interconnected computer networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and
Bluetooth security
This document summarizes Bluetooth security. It begins with an introduction to Bluetooth technology and its history. It then discusses Bluetooth security modes and protocols, including authentication, encryption key generation, and encryption. The document notes some of Bluetooth's most important security weaknesses, such as issues with the encryption algorithms and denial of service attacks. It concludes by listing references for further information on Bluetooth security specifications and research.
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over large geographic areas.
2. Computer networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a worldwide public network that connects millions of other networks.
3. Networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over large geographic areas.
2. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and programs that allow for communication and sharing of resources over the network.
3. Common network topologies include centralized networks with a central server, and peer-to-peer networks with shared resources among connected computers. Wide area networks connect local area networks together
หน่วยที่ 1ความหมายและความสำคัญของเครือข่ายคอมพิวเตอร์
This document discusses different types of computer networks including LAN, MAN, and WAN. It describes LAN networks as covering a small geographic area like a home, school, or office building. MAN networks are larger than LANs and span an entire city, and WANs are the largest, spanning cities, regions, and countries. The document also outlines peer-to-peer and client-server network models and common LAN technologies like Ethernet, Fast Ethernet, Gigabit Ethernet, and wireless LANs.
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a limited area like a home or office while WANs connect LANs together over longer distances using technologies like leased lines.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet extends an intranet to external users. The Internet is a worldwide public network that connects millions of other networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables while
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Wireless LANs can operate in either infrastructure mode with a central access point or in ad hoc mode without one. There are different types of wireless technologies like infrared, spread spectrum, and narrowband microwave. Standards include Bluetooth, 802.11, Hyper LAN. Wireless networks are insecure due to the open air medium and are vulnerable to jamming, interference, and spoofing attacks. Key methods to secure wireless networks include checking for rogue access points, using WEP encryption with enhancements like TKIP and AES, implementing IPsec, and utilizing 802.1x/EAP authentication with protocols like LEAP, TLS, and PEAP. More research is still needed to develop stronger encryption techniques and address remaining inse
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2. Connect an external Wi-Fi receiver to the virtual machine and use airodump-ng to search for Wi-Fi networks, putting the adapter in monitor mode.
3. Use the Reaver tool to launch a brute force attack against any networks found using WPS to crack the WPA encryption key in 3 steps or less.
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เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over large geographic areas.
2. Computer networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a worldwide public network that connects millions of other networks.
3. Networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over large geographic areas.
2. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems, applications, and programs that allow for communication and sharing of resources over the network.
3. Common network topologies include centralized networks with a central server, and peer-to-peer networks with shared resources among connected computers. Wide area networks connect local area networks together
หน่วยที่ 1ความหมายและความสำคัญของเครือข่ายคอมพิวเตอร์
This document discusses different types of computer networks including LAN, MAN, and WAN. It describes LAN networks as covering a small geographic area like a home, school, or office building. MAN networks are larger than LANs and span an entire city, and WANs are the largest, spanning cities, regions, and countries. The document also outlines peer-to-peer and client-server network models and common LAN technologies like Ethernet, Fast Ethernet, Gigabit Ethernet, and wireless LANs.
เทคโนโลยีสารสนเทศ
1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a limited area like a home or office while WANs connect LANs together over longer distances using technologies like leased lines.
2. Networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet extends an intranet to external users. The Internet is a worldwide public network that connects millions of other networks.
3. Computer networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables while
Cisco discovery d homesb module 7 - v.4 in english.
The document contains 20 multiple choice questions about wireless networking technologies including IEEE 802.11, Bluetooth, Wi-Fi, WLAN components, wireless security, encryption, authentication, and common configuration options. It tests knowledge of the key differences between wireless and wired networking, factors that influence wireless network setup and performance, and security best practices.
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This document discusses wireless local area networks (WLANs) and wireless security. It covers WLAN basics and standards like 802.11a, 802.11b and 802.11g. It describes security protocols like Wired Equivalent Privacy (WEP) and vulnerabilities like weak encryption keys. The document discusses ways to crack WEP security and better security protocols like WPA/WPA2. It also provides instructions on how to scan and crack wireless networks using tools like Aircrack-ng on different operating systems.
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This document summarizes wireless network security and best practices. It discusses how wireless networks are less secure than wired due to packet sniffing and remote access. It describes common wireless attacks like man-in-the-middle and denial of service. WEP encryption is shown to be flawed and easily cracked. WPA was introduced as an improvement over WEP but still has some vulnerabilities. The document recommends using strong encryption like AES, along with other security measures such as MAC filtering, static IPs, network separation, and policy to help secure a wireless network.
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This document discusses techniques for cracking WiFi passwords, including:
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2. Using a brute force attack or dictionary attack to crack the password hash.
3. Explaining the WiFi Protected Setup (WPS) protocol and how the Reaver tool can brute force the WPS PIN to access the network.
4. Recommending strong password practices to prevent cracking, such as using long, random passwords with symbols and numbers.
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Wi-Fi is a wireless technology standard that allows electronic devices to connect to the internet or communicate with each other wirelessly. The presentation discusses Wi-Fi technologies like 802.11b, 802.11a, and 802.11g. It explains the basic components of a Wi-Fi network including access points, Wi-Fi cards, and security measures. It also covers Wi-Fi configurations, applications, security techniques and topologies like AP-based, peer-to-peer, and point-to-multipoint bridge.
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The document discusses the characteristics and security issues of wireless LANs (WLANs). It describes the advantages and disadvantages of WLANs, as well as their design goals and transmission technologies. It then discusses some specific wireless security issues for WLANs, including interception of radio signals, reliance on shared public infrastructure, and risks from rogue access points and war driving. Finally, it provides an overview of the IEEE 802.11 standard for WLANs, including its network architectures, transmission methods like CSMA/CA, frame types, and security features.
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Wireless LANs can operate in either infrastructure mode with a central access point or in ad hoc mode without one. There are different types of wireless technologies like infrared, spread spectrum, and narrowband microwave. Standards include Bluetooth, 802.11, Hyper LAN. Wireless networks are insecure due to the open air medium and are vulnerable to jamming, interference, and spoofing attacks. Key methods to secure wireless networks include checking for rogue access points, using WEP encryption with enhancements like TKIP and AES, implementing IPsec, and utilizing 802.1x/EAP authentication with protocols like LEAP, TLS, and PEAP. More research is still needed to develop stronger encryption techniques and address remaining inse
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This document provides instructions for cracking Wi-Fi encryption using Backtrack 5 R3 in 3 steps:
1. Set up a virtual machine using VMware to securely run Backtrack 5 R3, an operating system for digital forensics and penetration testing.
2. Connect an external Wi-Fi receiver to the virtual machine and use airodump-ng to search for Wi-Fi networks, putting the adapter in monitor mode.
3. Use the Reaver tool to launch a brute force attack against any networks found using WPS to crack the WPA encryption key in 3 steps or less.
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This document provides an overview of wireless hacking and WiFi security. It discusses basic WiFi terms like SSID, BSSID, and MAC addresses. It explains how wireless networks work by transmitting data packets between devices and access points. Common wireless encryption standards like WEP, WPA, and WPA2 are described as well as how they can be cracked. Tools for wireless hacking in Backtrack like Airodump-ng, Aireplay-ng, and Aircrack-ng are introduced along with how they can be used to crack encryption keys through techniques like dictionary attacks and capturing handshakes. The document concludes by stating it is time to start hacking wireless networks.
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This document discusses several tools used for Android hacking, including KingRoot, WPS WPA Tester, WiFi Kill, Network Spoofer, Shark for Root, Tunnel Bear, and Hackode. KingRoot allows users to gain root access on Android devices running 2.x to 5.0 without flashing a recovery image. WPS WPA Tester hacks vulnerable WiFi networks by capturing the WPS PIN. WiFi Kill disables internet access for nearby peers on the same WiFi network using ARP poisoning. Network Spoofer allows changing websites on other devices on a network for demonstration purposes only. Shark for Root is a version of Wireshark for security experts to analyze traffic on WiFi, 3
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A document discusses securing wireless networks at home and on the road. It describes typical home wireless networks which include a wireless router and connected computers. It also explains wireless standards like 802.11b, 802.11g and 802.11n. The document recommends securing home wireless networks by changing default passwords, changing the SSID name, enabling encryption, reviewing logs, and practicing good computer security. When using public wireless networks, it's best to ask permission first before connecting.
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Tor is an anonymity network that allows users to browse the web anonymously. It works by routing traffic through a series of volunteer servers, or relays, that encrypt and then randomly route data in an attempt to make it untraceable. The Tor browser bundles this routing technology to allow users to access the open web as well as "hidden services" anonymously. While Tor provides anonymity, it has some weaknesses including potential traffic analysis of autonomous systems and exit node eavesdropping. The presentation provides an overview of how Tor works and relays, how to use Tor safely, and some common services found on Tor.
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An open, unencrypted wireless network can 'sniff' or capture and record the traffic, gain unauthorized access to internal network resources as well as to the internet, and then use the information and resources to perform disruptive or illegal acts.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security. Wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks.The risks to users of wireless technology have increased as the service has become more popular.As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources.
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หน่วยที่ 1ความหมายและความสำคัญของเครือข่ายคอมพิวเตอร์
หน่วยที่ 1ความหมายและความสำคัญของเครือข่ายคอมพิวเตอร์
Cisco discovery d homesb module 7 - v.4 in english.
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Sara Hassanin is a property consultant for The Heart of Europe in Dubai with over 6 years of experience in real estate and sales. She has exceeded sales targets at multiple prior roles with companies like Bianchi Sidi Abel Rahman and Sahara by Shahira Fawzy in Egypt. Sara obtained a Bachelor's degree in Logistics from the Arabic Academy for Science and Technology, and also has volunteer experience with Paradise Charity Organization. She is married, holds French and Egyptian nationality, and is fluent in Arabic, English and French.
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This document discusses different network topologies including bus, star, ring, and point-to-point. The bus topology uses a main cable that acts as a backbone and connects all nodes through terminators at either end. The star topology connects all nodes to a central hub or switch. The ring topology connects all nodes in a continuous loop or ring.
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Project Management Professional (PMP) is a credential offered by the Project Management Institute (PMI). As of 31 July 2010, there were 393,413 active PMP certified individuals worldwide. Globally recognized and demanded, the PMP® demonstrates that you have the experience, education and competency to lead and direct projects. This recognition is seen through increased marketability to employers and higher salary; according to the PMI Project Management Salary Survey-Seventh Edition, certification positively impacts project manager salaries
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Advertising in Delhi New Delhi HOHO DMRC Feeder Chartered Buses Bus
HOHO DMRC Feeder Chartered Buses Advertising in Delhi New Delhi
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Seo web hosting guide
SEO Hosting is basically similar to a HostGator reseller account. The only difference is in the WHM. The Reseller WHM at HostGator allows you to create multiple accounts on the same ip, whereas with SEO Hosting you can create accounts on different C classes.
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- 1. 5.1 o o digital o o 2 o o 5.2 o o o o 5.3 WIRELESS LAN) o
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