Hello everybody, im a bit confused with a portscan i did.

I scanned my public ip from the router for open ports from another device on a mobile hotspot. There where alot but i mean alot of open ports, i checked one of the many and it was for "blackice-icecap". I went into my routers admin panel and checked if there where any ports being forwarded but according to my router there are none.

I then tried to scan my private ip from my desktop from another device on a hotspot and it has all the same ports open as on my previous nmap scan of my public ip.

I thought this was weird and i tried to scan a random ip i just typed in and it also gave me all the same ports open...

Normally i use my linux device to study HTB but this time i used Nmap for windows on another laptop i have laying around.

Now my questions are: 1. Why are all these ports open on my public ip but i cant see any open on my router itself?

1. Shouldnt it be impossible to scan a private ip adress?

2. If im wrong about all of this, what are some steps i could take?

Thanks in advance 😁