Disable and disconnect vpn users outside working hours - Mikrotik

 Add scheduler script at 18:00 every day

ppp secret disable [/ppp secret find name=johnsmith]
ppp active remove [/ppp active find name=johnsmith]

Add scheduler script at 09:00 every day

ppp secret enable  [/ppp secret find name=johnsmith]

Microtik ppp-up and ppp-down scripts Telegram notification

 Global script (go to /system script) name - SendTelegram

:global telegramMessage
:local botid
:local chatid
set botid "TOKEN"
set chatid "USERID"
if ($telegramMessage != "") do={
    /tool fetch url="https://api.telegram.org/bot$botid/sendMessage\?chat_id=$chatid&text=$telegramMessage" keep-result=no
    set telegramMessage ""
}

OpenVPN Microtik to IPFire net-to-net

Connect Microtik router as openVPN client of IPFire security appliance - OpenVPN connection.