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A brief explanation

This script provides a quick way to setup a Time-of-day (Tod) Access Control List (ACL) for a Hostapd Wifi Access Point.

It uses the hostapd-cli's whitelist to only allow certain MAC addresses to join the AP.

Setup

The following

  1. Install python 3 or above & hostapd

  2. Make a Wifi AP with hostapd, enable hostapd_cli and MAC whitelist by adding to the config:

     macaddr_acl=0
     accept_mac_file=/etc/hostapd/hostapd.accept
     ctrl_interface=/var/run/hostapd
     ctrl_interface_group=0
    
  3. Place the following files inside /etc/hostapd/:

    • hostapd.accept
    • mac-time-of-day-acces.py
  4. Configure crontab ($ sudo crontab -u root -e) with the following rule to execute the script every minute:

     * * * * * python /etc/hostapd/mac-time-of-day-access.py
    
  5. Set your time of day MAC based filters with the file mac-time-filter.json

mac-time-filter.json

Format

{
	"mac": [
		["start (H:M:S)", "end (H:M:S)"],
		…
	],
	…
}

Example

{
	"48:01:C5:76:14:53": [
		["10:00:00","12:00:00"],
		["16:00:00","21:30:00"]
	]
}

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Setup a hostapd AP with MAC ToD ACL

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