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MAC Addresses coming up as unavailable
Also there appears to be a device pretending to be my Mac book which I've removed multiple times that keeps reappearing. Initially it was coming up with the exact same name (Voldemort's Mac book air) so I uncapitalised the V in Voldemort on my Mac book which it then copied. I renamed the one I believe to be my real Mac book on the fing app so I can now tell them apart.
I reset my router last night and changed the name and password of my network two weeks ago and haven't shared it with anyone.
When I check the ports on my router from the fing app it looks as though there's thousands open. Is this normal?
Lastly, when I factory reset my router it reverts to the last network name and password I had. I contacted my ISP about this as I thought it seemed to defeat the purpose of a factory reset but they assured me it's normal. Is this normal?
I have very little knowledge in this area (which is probably quite apparent lol). Any advice would be much appreciated.
Thanks in advance 🙏