It turns out to connect to the ports of the router even with the maximum firewall, what should I do?

Question

network hardware

I decided to check the router (zte F680) for security, the maximum firewall level and hacking protection are enabled. I looked at open ports via nmap(53,80,443,445) - I try to connect via nc [ip] [port], it turns out (does not write anything after the command), I also do it via telnet, it also exits, I looked at the ports again, connecting from the mobile Internet, maybe although I looked from a virtual machine, it could be a local network, I saw port 21 on ftp, connected via ftp. I took the IP from the router menu (192.168.1.1), not the one that appears on the sites. what to do? (the router was given in MGTS)
PS: online port check services (like this - https://www.yougetsignal.com/tools/open-ports/ ) write that everything is closed.
UPD: it turned out that this was a local address all this time

Answer 1

Who are you protecting yourself from, from the local network or the Internet?