Simple network scanner built with Scapy for Python

Perform either an ARP scan or TCP scan.

• An ARP scan will send ARP requests to all devices on the local network, and collect the ARP replies to discover IP address to MAC address mappings.
• A TCP scan will send TCP SYN packets to all specified ports, and collect the SYN+ACK replies to discover which ports are open.

If you are on a UNIX-based system, please run the script as root (use sudo).

usage: scanner.py [-h] {ARP,TCP} ... positional arguments: {ARP,TCP} Command to perform. ARP Perform a network scan using ARP requests. TCP Perform a TCP scan using SYN packets. optional arguments: -h, --help show this help message and exit 

Either an IP address or IP address range can be used. For example, python3 scanner.py ARP 192.168.2.1/24 scans all IP addresses in the 192.168.2.0/24 subnet.

usage: scanner.py ARP [-h] IP positional arguments: IP An IP address (e.g. 192.168.1.1) or address range (e.g. 192.168.1.1/24) to scan. optional arguments: -h, --help show this help message and exit 

Either specific ports or a range of ports can be used. For example, python3 scanner.py TCP 192.168.2.1 --range 0 1000 scans all ports from 0 to 1000.

usage: scanner.py TCP [-h] [--range] IP ports [ports ...] positional arguments: IP An IP address or hostname to target. ports Ports to scan, delimited by spaces. When --range is specified, scan a range of ports. Otherwise, scan individual ports. optional arguments: -h, --help show this help message and exit --range Specify a range of ports. When this option is specified, <ports> should be given as <low_port> <high_port>. 

If you receive AttributeError: 'L2bpfSocket' object has no attribute 'ins', you likely need to run the script as root (use sudo). See https://stackoverflow.com/questions/55881295/l3packetsocket-object-has-no-attribute-ins-when-using-send-command