Firewall configuration of the ISP's public or external network.
Firewall configuration of the ISP's public or external network.
Hi, your experience is common. Nextcloud on RPi 3 does require opening ports like 443 and 80 by default. For other ports, you often need to contact your ISP to adjust firewall settings, especially in countries such as Slovenia where restrictions are in place.
You seem confused about public and external firewalls, but likely mean CGNAT (carrier-grade NAT). NAT allows multiple devices to share a single IP address, which your router handles so they can access the internet. Many ISPs are adopting this approach for their customers because IPv4 addresses are limited. If your ISP uses CGNAT, you might need to contact them to open ports, and they could charge extra. IPv6 offers a solution—if both your devices and your connection support it, you can avoid these issues entirely. You can verify your IPv6 status at ipv6-test.com.