Cracking wep and wpa wireless networks

This document discusses cracking WEP encryption on wireless networks. It explains that monitor mode allows a wireless card to capture all network traffic, including unencrypted data. It also describes how to use tools like aircrack-ng, wep_crack, and WEPAttack to perform dictionary attacks and brute force the 5 or 13 byte encryption keys by exploiting weaknesses in the WEP algorithm and capturing large numbers of packets with duplicate initialization vectors. With enough captured packets, these tools can typically recover WEP keys within minutes, regardless of the passphrase complexity.

This document discusses wireless security using WPA2. It begins by describing the types of wireless security including open networks, WEP, WPA, and WPA2. It then provides an overview of WPA2, including how it uses AES for encryption and integrity checking. The document compares WEP, WPA, and WPA2 and describes WPA2 authentication in personal and enterprise modes. It details how WPA2 generates keys through a 4-way handshake and uses AES in counter mode for encryption and CBC-MAC for integrity. The document concludes by discussing benefits and vulnerabilities of WPA2 as well as procedures to improve wireless security.

WPA2 is the latest security standard for Wi-Fi networks. It uses AES encryption and 802.1X/EAP authentication to securely transmit data between wireless devices and access points. The four phase process establishes a secure communication context through agreeing on security policies, generating a master key, creating temporary keys, and using the keys to encrypt transmissions. WPA2 provides stronger security than previous standards like WEP and WPA through more robust encryption and authentication methods.

IEEE 802.11i defines robust security standards for wireless LANs by specifying two improved encryption protocols - TKIP and CCMP. TKIP builds upon the flawed WEP protocol by strengthening encryption, adding message integrity checking, and implementing secure key management. CCMP uses the more robust AES encryption algorithm along with CCM mode to provide both confidentiality and authentication. 802.11i also defines key derivation and distribution methods using pairwise master keys and group keys to securely manage and update encryption keys.

Regardless of residential or corporate environments, wireless networking has been trending, bringing WLAN equipment revenue up to $5.2 billion in 2015. Unlike wired networks, wireless networks go beyond the walls, and could transmit your corporate or personal data in a way anyone else can eavesdrop. With the quick adaptation of wireless networking, control of smart devices, including smart home devices and smart cars that might be at hands of a blackhat hacker. Looking from a different angle, every time you connect to an untrusted wireless network, a malicious attacker might be listening to your communication. This session will technically discuss security risks associated with wireless networks, with near real-life demonstrations. Different network security mechanisms and their weaknesses will be discussed. Towards the end of the session, we will be discussing best practices that should be followed to secure wireless networks and your data over wireless networks. Demonstrations will include following. * Wireless network discovery and probing * Wireless network attacks (WEP/WPA/WPS) * Using OpenWrt open source firmware in wireless security * Rough wireless access points (MitM/Traffic Logging)

It is the powerpoint slide.It is all about WPA 3.It will make wifi more secure.This is the future of wireless security.Know how the man in the middle attack and krack attack works.Know also about RC4 encryption.

The WEP protocol was introduced with the original 802.11 standards as a means to provide authentication and encryption to wireless LAN implementations. WPA, became available in 2003, and it was the Wi-Fi Alliance’s direct response and replacement to the increasingly apparent vulnerabilities of the WEP encryption standard

This document discusses wireless cracking techniques using Kali Linux. It covers setting wireless interfaces to monitor mode, capturing traffic using airodump-ng to crack hidden SSIDs, bypassing MAC filtering, cracking WEP security using aircrack-ng, capturing the 4-way handshake to crack WPA/WPA2 pre-shared keys either through brute force or using pre-computed PMK files to speed up the cracking process. Generating password files with crunch and tools like pyrit, cowpatty and aircrack-ng are also summarized.

This document discusses various techniques for exploiting weaknesses in WiFi security to intercept and manipulate web traffic. It describes how unencrypted management frames and shared wireless media allow spoofing access points and intercepting sessions. With tools like LORCON, attackers can inject packets to hijack TCP streams and manipulate browsers by rewriting HTML, JavaScript and redirecting HTTPS to HTTP. Persistent attacks are also possible by caching manipulated content for long periods.

The document discusses the history and standards of wireless networks, including 802.11 standards such as 802.11b, 802.11g, and 802.11n. It then describes the two main modes that wireless networks can operate in: infrastructure mode where clients connect to a central access point, and ad-hoc mode where clients connect directly to each other without an access point. The document also discusses wireless security standards including WEP (Wired Equivalent Privacy), WPA, and WPA2, noting flaws in the original WEP encryption.

This document provides an overview of security at the device, network, and server levels for wireless systems. It discusses security requirements and challenges for mobile devices, networks, and servers. It also summarizes common wireless network security standards and protocols like WEP, WPA, and WPA2. Specific security threats and potential solutions are outlined for each level.

The document discusses emerging wireless network security threats and recommendations. Common risks to wireless networks include rogue access points, evil twin attacks, and users bypassing network security controls. Emerging threats include hotspot phishing, virtual Wi-Fi access on Windows 7 computers allowing unauthorized access, and Bluetooth pinpad swapping. The document recommends centrally monitoring and controlling the wireless network infrastructure with solutions like Motorola AirDefense to ensure security, compliance, and troubleshoot wireless issues.