Wireless network security primarily protects a wireless network from unauthorized and malicious access attempts. Typically, wireless network security is delivered through wireless devices (usually a wireless router/switch) that encrypts and secures all wireless communication by default. Even if the wireless network security is compromised, the hacker is not able to view the content of the traffic/packet in transit. Moreover, wireless intrusion detection and prevention systems also enable protection of a wireless network by alerting the wireless network administrator in case of a security breach.
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Security managers have a variety of tools available for keeping WLANs safe. Here’s a representative sampling:
Network discovery tools run on 802.11 stations and passively monitor beacon and probe response frames. Some actively probe for APs and stations configured for peer to peer. They typically display discovered devices by SSID, channel, MAC address and location (when used with a GPS), generating basic data that can be saved to a file.
Is there any better price than free when you’re looking for a new tool? These security tools will help monitor your network and keep your data safe, for free! they are as follows:
NetStumbler displays wireless access points, SSIDs, channels, whether WEP encryption is enabled and signal strength. NetStumbler can connect with GPS technology to accurately log the precise location of access points.
A smaller version of NetStumbler designed to work on PocketPC 3.0 and PocketPC 2002 platforms. It provides support for ARM, MIPS and SH3 CPU types.
WEPCrack was the first of the WEP encryption cracking utilities. WEPCrack is an open-source tool used to break 802.11 WEP keys. You can also download WEPCrack for Linux.
Airsnort is a wireless LAN (WLAN) tool which cracks WEP encryption keys. AirSnort passively monitors wireless transmissions and automatically computes the encryption key when enough packets have been gathered.
Btscanner allows you to extract as much information as possible from a Bluetooth device without the requirement to pair. It extracts HCI and SDP information and maintains an open connection to monitor the RSSI and link quality.
The polar opposite of hiding your network by disabling SSID broadcasts- Black Alchemy’s Fake AP generates thousands of counterfeit 802.11b access points. As part of a honeypot or as an instrument of your site security plan, Fake AP confuses Wardrivers, NetStumblers, Script Kiddies, and other scanners.
Kismet is an 802.11 wireless network detector, sniffer, and intrusion detection system. Kismet identifies networks by passively collecting packets and detecting standard named networks, detecting (and given time, decloaking) hidden networks, and inferring the presence of non-beaconing networks via data traffic.
Redfang v2.5 is an enhanced version from @Stake of the original Redfang application that finds non-discoverable Bluetooth devices by brute-forcing the last six bytes of the device’s Bluetooth address and doing a read_remote_name().
A tool to use when looking to discover access points and save captured traffic. Comes with a configured script and supports Cisco Aironet and random prism2 based cards.
WifiScanner analyzes traffic and detects 802.11b stations and access points. It can listen alternatively on all 14 channels, write packet information in real time, search access points and associated client stations. All network traffic may be saved in the libpcap format for post analysis.
wIDS is a wireless IDS. It detects the jamming of management frames and could be used as a wireless honeypot. Data frames can also be decrypted on the fly and re-injected onto another device.
WIDZ is a proof of concept IDS system for 802.11 wireless networks. It guards access points (AP’s) and monitors local frequencies for malicious activity. It detects scans, association floods, and bogus/Rogue AP’s. It can also be integrated with SNORT or RealSecure.
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