Use wireless network with daily psk

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ℹ️ Info: This script can not be used on its own but requires the base installation. See main README for details.

Description

This script is supposed to provide a wifi network which changes the passphrase to a pseudo-random string daily.

Sample notification

daily-psk notification

Requirements and installation

Just install this script.

Depending on whether you use wifiwave2 package (/interface/wifiwave2) or legacy wifi with CAPsMAN (/caps-man) or local wireless interface (/interface/wireless) you need to install a different script and add schedulers to run the script:

For wifiwave2:

$ScriptInstallUpdate daily-psk.wifiwave2;
/system/scheduler/add interval=1d name=daily-psk on-event="/system/script/run daily-psk.wifiwave2;" start-time=03:00:00;
/system/scheduler/add name=daily-psk@startup on-event="/system/script/run daily-psk.wifiwave2;" start-time=startup;

For legacy CAPsMAN:

$ScriptInstallUpdate daily-psk.capsman;
/system/scheduler/add interval=1d name=daily-psk on-event="/system/script/run daily-psk.capsman;" start-time=03:00:00;
/system/scheduler/add name=daily-psk@startup on-event="/system/script/run daily-psk.capsman;" start-time=startup;

For legacy local interface:

$ScriptInstallUpdate daily-psk.local;
/system/scheduler/add interval=1d name=daily-psk on-event="/system/script/run daily-psk.local;" start-time=03:00:00;
/system/scheduler/add name=daily-psk@startup on-event="/system/script/run daily-psk.local;" start-time=startup;

These will update the passphrase on boot and nightly at 3:00.

Configuration

The configuration goes to global-config-overlay, these are the parameters:

DailyPskMatchComment: pattern to match the wireless access list comment
DailyPskSecrets: an array with pseudo random strings

ℹ️ Info: Copy relevant configuration from global-config (the one without -overlay) to your local global-config-overlay and modify it to your specific needs.

Then add an access list entry. For wifiwave2:

/interface/wifiwave2/access-list/add comment="Daily PSK" ssid-regexp="-guest\$" passphrase="ToBeChangedDaily";

For legacy CAPsMAN:

/caps-man/access-list/add comment="Daily PSK" ssid-regexp="-guest\$" private-passphrase="ToBeChangedDaily";

For legacy local interface:

/interface/wireless/access-list/add comment="Daily PSK" interface=wl-daily private-pre-shared-key="ToBeChangedDaily";

Also notification settings are required for e-mail, trix, ntfy and/or telegram.

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