arp-scan

ARP-scan is a command-line tool used for scanning and fingerprinting network devices on a local area network (LAN). It operates by sending Address Resolution Protocol (ARP) requests to discover and obtain information about IP and MAC addresses associated with devices connected to the network.

Some key features of arp-scan include:

1. Network scanning: arp-scan can scan an entire network or a specific IP range to detect all active devices on the LAN.

2. MAC address retrieval: It provides the MAC addresses of devices connected to the network so that their hardware can be identified.

3. Vendor identification: arp-scan can perform a lookup of MAC addresses to determine the manufacturer or vendor associated with a specific device.

4. Customization: It allows users to customize the ARP requests by specifying additional options and flags.

5. Passive scanning: It can passively listen to network traffic and display active devices, without sending any ARP requests.

Arp-scan is commonly used by network administrators and security professionals to discover devices on a network, identify potential security vulnerabilities, and monitor for unauthorized devices. It is available for various operating systems, including Linux, macOS, and Windows.