NetAlertX/docs/SUBNETS.md

Subnets configuration

The arp-scan time itself depends on the number of IP addresses to check. The number of IPs to check depends on the network mask you set on the SCAN_SUBNETS setting.

For example, a /24 mask results in 256 IPs to check, where as a /16 mask checks around 65,536. Every IP takes a couple seconds. This means that with an incorrect configuration the arp-scan will take hours to complete instead of seconds.

• Specify the network mask. For example, the filter 192.168.1.0/24 covers IP ranges 192.168.1.0 to 192.168.1.255
• Run iwconfig in your container to find your interface name(s) (e.g.: eth0, eth1).
• Append e.g.: -vlan=107 to the interface field (e.g.: eth0 -vlan=107) for multiple vlans. More details in this comment in this issue

Example: