is there any way to get the true ip of the unknown device?
this shit is bothering me, also it tries to log into my wlan network every minute
>>16931507
Because your router isn't allowing it to connect to the DHCP server on the router (due to the MAC address filter) it doesn't have an IP address.
Honestly your router is doing the right thing. More importantly, I would make sure the admin account to the router isn't the default manufacturer password and the Wi-Fi password is very, very strong - possibly changed weekly since you're getting bruteforced.
Look into DHCP, the OSI Model, etc. It'll help explain in more detail what I'm saying.
>>16931538
it was already connected to it days before when i noticed and enabled mac adress filter
ok ill change the password now
anything else? cant i do something with its mac adress?
>>16931581
you've filtered out the MAC address which is the best thing you can do atm. Do you know who/what is trying to connect?