diff --git a/source/components/device_tracker.nmap_scanner.markdown b/source/components/device_tracker.nmap_scanner.markdown index 4a0eb4f42cc..de144c8e4a6 100644 --- a/source/components/device_tracker.nmap_scanner.markdown +++ b/source/components/device_tracker.nmap_scanner.markdown @@ -12,6 +12,8 @@ footer: true As an alternative to the router-based device tracking, it is possible to directly scan the network for devices by using Nmap. The IP addresses to scan can be specified in any format that Nmap understands, including the network-prefix notation (`192.168.1.1/24`) and the range notation (`192.168.1.1-255`). +If you're on Debian or Ubuntu, you might have to install the packages for arp and nmap. Do so by running `apt-get install net-tools nmap`. + ``` # Example configuration.yaml entry device_tracker: