[UPDATE]: the incorrect behaviour had been caused by the presence of a repeater (TP-Link RE220) which by default has the DHCP Server set to on. Disabling this setting solved the problem.

So, I decided to dedicate more time to the issue. In the end it turned out it was a problem regarding the RPi firewall configuration. After launching the command iptables -S on the host, I recognized...

@terziyski First of all, I'd like to thank you for all your help you're providing. No, no filtering service is off; unfortunately the biggest problem I'm experiencing with this router is not about...

@terziyski If I switch to port 22 the connection times out: no reply at all.

I've used a different port (1066 to be precise), changed the settings on both the SSH server and the router but I'm not able to login. If I launch nmap I got contradictory responses, which I'll show...

Good morning all, as other people before me have pointed out, the IP reservation carried out by this router is extremely poor: I have five hosts on my LAN/WLAN which should keep their original IP...