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- How to use aircrack windows Patch#
- How to use aircrack windows software#
- How to use aircrack windows windows#
The block diagram given in Figure 3 gives a brief description of the tool.īob is determined to patch up the weak links in his network so he asks Eve to demonstrate how the tool is used to prevent various attacks.
How to use aircrack windows windows#
This tool can be used across Linux as well as Windows platforms, but has limited support in Windows. It is mainly used for testing the weaknesses of wireless networks by breaking into the network using the WEP and WPA-PSK keys recovered by decrypting the gathered encrypted packets.
How to use aircrack windows software#
Since Bob is unaware of the functionality of Aircrack-ng, Eve provides a brief overview.Īircrack-ng stands for √ircrack new generation and is an advanced network auditing software used for sniffing and cracking wireless networks. She advises Bob to use Aircrack-ng to internally spot the weak access points and enhance his networks security to avoid future attacks. During her research, she comes across one such tool that suits her needs. Alarmed at the situation, he again contacts Eve for help. Yet, even after such heightened countermeasures, Bobs network again gets compromised by some mischievous attackers. CCMP uses AES instead of TKIP as the underlying encryption mechanism and, hence, prevents various attacks that were designed based on the RC4 cipher used in TKIP.Īfter some research, Eve concludes that WPA2 is secure enough to get rid of the kind of attacks Bobs office suffers from and, hence, configures the entire network over WPA2. Another significant security enhancement has been the introduction of CCMP. WPA2, also known as RSN (robust security network), is the most recent and highly secure algorithm, which enforces mandatory usage of the AES (advanced encryption standard). WPA can be compromised using Denial of Service attacks. But there are also a few loopholes that can be exploited. In WPA, its difficult to get the key because every data packet has a unique key. This is because in the case of the latter, every data packet has the same key, which can be easy to find by capturing a sufficient number of packets. Figure 2 gives diagrammatic representation of WPA algorithm. The pre-shared key (PSK) used in TKIP is a 256-bit entity used for authentication. WPA is mainly based on TKIP (temporal key integrity protocol), which uses a unique encryption key for each data packet sent over the network. WPA is a more secure algorithm that was developed in 2003 to address a few of the vulnerabilities that existed in WEP. Various techniques, based on brute force attacks and analysis of the IVs (initialisation vectors), were discovered that led to deprecation of this algorithm.
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In spite of the mechanisms used, this algorithm has a number of vulnerabilities and can be easily cracked. It authenticates the client if the match is found. The access point decrypts the response and verifies if the decrypted text matches the challenge-text. The client encrypts the challenge-text using the configured WEP key and sends the encrypted message to the access point.ĭ. The access point responds to the request with a clear-text challenge.Ĭ. The client sends an authentication request to the access point.ī. Shared Key authentication: In this authentication mechanism as shown in figure 1, the WEP key is used for authentication in a four-step handshake process:Ī. Any client can authenticate with the access point.Ģ. Open System authentication: In this case, the WLAN client need not provide its credentials to the access point during authentication. Open System authentication and Shared Key authentication are the two methods of authentication used in WEP.ġ. This algorithm is based on the RC4 stream cipher and CRC checksum mechanism to provide confidentiality and integrity. Figure 1: Shared key authentication mechanism She provides him with the basic details of the two algorithms used in a majority of wireless networks: WEP (Wired Equivalent Privacy) and WPA/WPA2 (Wi-Fi Protected Access). Eve investigates the situation and explains how wireless protocols function.
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He contacts Eve, a security analyst, for help. This continuous mischief irritates him and he has no idea why this is happening. After a few such compromises, he changes his Wi-Fi passwords but the attacks continue. He is really annoyed with the repeated unauthentication of legitimate users from the Wi-Fi network. He has his network configured over the WEP protocol with simple dictionary based passwords like YOUCANTGUESS. Bobs start-up company, XYZ Pvt Ltd, has a few wireless access points.