Two types of vulnerabilities can be found in the Wireless LAN. One is poor configuration and the other is poor encryption. Poor configuration is caused by the network admin who manages the network. It may include a weak password, a lack of security settings, use of default configurations and other user-related issues.
WEP and WPA are the two main security protocols used in Wi-Fi LAN. WEP, or Wired Equivalent Privacy, is a deprecated security protocol that was introduced back in 1997 as a part of the original 802.11 standards. However, it was weak, and several serious weaknesses were found in the protocol. Now, this can be cracked within minutes.
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To get unauthorized access to a network, one needs to crack these security protocols. Many tools can crack Wi-Fi encryption. These tools can either take advantage of WEP weaknesses or use brute force password guessing attacks on WPA/WPA2/WPA3.
Wireless hacking tools are of two types. One can be used to sniff the network and monitor what is happening in the network. The other kind of tool is used to hack WEP/WPA keys. These are the popular tools used for wireless password cracking and network troubleshooting.
Aircrack-ng is one of the most popular wireless password cracking tools that you can use for 802.11a/b/g WEP and WPA cracking. Aircrack-ng uses the best algorithms to recover wireless passwords by capturing packets. Once enough packets have been gathered, it tries to recover the password. To make the attack faster, it implements a standard FMS attack with some optimizations.
The company behind the tool also offers an online tutorial where you can learn how to install and use this tool to crack wireless passwords. It comes as Linux distribution, Live CD and VMware image options. You can use any of these. It supports most of the wireless adapters and is almost guaranteed to work. If you are using a Linux distribution, the only drawback of the tool is that it requires deeper knowledge of Linux. If you are not comfortable with Linux, you will find it hard to use this tool. In this case, try Live CD or VMWare image. VMWare Image needs less knowledge, but it only works with a limited set of host OS, and only USB devices are supported.
Before you start using this too, confirm that the wireless card can inject packets. Then start WEP cracking. Read the online tutorial on the website to know more about the tool. If you follow the steps properly, you should be able to successfully crack a Wi-Fi network protected with WEP.
Kismet is a wireless network sniffer that works for Wi-Fi, Bluetooth, software-defined Radio (SDR) and other wireless protocols. It passively collects packets being broadcast in its vicinity and analyzes them to detect even hidden Wi-Fi networks.
AirJack is a Wi-Fi 802.11 packet injection tool. This wireless cracking tool is very useful in injecting forged packets and taking a network down via a denial of service attack. This tool can also be used for a man-in-the-middle attack on the network.
CloudCracker is an online password cracking tool for cracking WPA-protected Wi-Fi networks. This tool can also be used to crack different password hashes. Just upload the handshake file, enter the network name, and start the tool. This tool has a huge dictionary of around 300 million words to perform attacks.
Wireless monitoring and troubleshooting tools are basically for network admins and programmers working on Wi-Fi-based software. These tools help when some of your systems face problems in connecting to the network. They are also valuable for red teamers and penetration testers looking for potential vulnerabilities to exploit.
The main purpose of Lansweeper derives from a discovery phase of sweeping round a local area network (LAN) and maintaining an inventory of the hardware assets and software deployed on those assets.[5] Reports from the inventory enable complete hardware and software reports on the devices and can be used to identify problems.[6] Lansweeper can collect information on all Windows, Linux and Mac devices and can also IP-addressable network appliances.[5]
The software incorporates an integrated ticket-based Help Desk module that can be used to assist issues to be captured and tracked through to completion.[7] There is also a software module that allows Lansweeper to orchestrate software updates on Windows computers.[7]
If a Windows client cannot resolve a hostname using DNS, it will fall back to LLMNR or NBT to attempt to resolve the hostname. LLMNR and NBT will broadcast name resolution requests on their local subnet and will happily forward password hashes to other computers that respond. Pen testing tools like Responder, which is included in Kali Linux, are easy to use and watch for these communications on the network. Even seasoned Windows administrators would be surprised to learn how vulnerable the operating system can be to password interception and other tricks in its default configuration.
Local area network (LAN) monitoring is a systematic series of observations, tests, and assessments performed on an internal computer network to detect slowdown or failure on the part of network components. Effective LAN monitoring is accomplished using monitoring tools, protocols, and thresholds to help identify the benchmarks against which network performance is measured. By setting warning and critical network performance thresholds, network admins can configure the LAN monitoring solution to preemptively alert when these thresholds are crossed to help prevent outages to LAN connectivity.
LAN monitoring software works by detecting potential network failures and performance issues like bottlenecks. LAN monitoring can help identify other common device issues, including overloaded servers, routers, switches, and other network devices. While not a part of a wired local area network, wireless network monitoring, or wireless LAN (WLAN), can also be important to consider in an overall network monitoring strategy.
To provide active monitoring of network reliability, the LAN monitoring system software tracks network parameters across all local devices. Performance metrics used to assess LAN network health can include:
By logging how each device performs over time, the network monitoring system data can help administrators know what areas of the network they may need to regulate and troubleshoot, which can help prevent a failure on the part of the affected device or entire local network.
Since a LAN monitoring system requires every connection be registered and tracked, it can provide administrators with real-time information about network traffic and functionality. Monitoring and analyzing network traffic and performance allows administrators to troubleshoot more effectively and solve issues quickly, often without drastically interrupting network throughput.
NOS, or Network Operating System, is specialized software. The main task of this software is to provide network connectivity to a computer in order to communicate with other computers and connected devices.
Gateways provide connectivity between two or more network segments. It is usually a computer that runs the gateway software and provides translation services. This translation is key in allowing different systems to communicate on the network.
A network administrator has many responsibilities that can be summarized into 3 key functions: installation of a network, a configuration of network settings, and maintenance/troubleshooting of networks.
Instead of having to visit each client computer to configure a static IP address, the network administrator can apply dynamic host configuration protocol to create a pool of IP addresses known as scopes that can be dynamically assigned to clients.
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These attacks are simple because many people still use weak passwords, such as "password123" or "1234," or practice poor password etiquette, such as using the same password for multiple websites. Passwords can also be guessed by hackers that do minimal reconnaissance work to crack an individual's potential password, such as the name of their favorite sports team. 2ff7e9595c
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