I recently opened ports 21 for FTP, 10000 for webmin, 20000 for usermin etc.
This site says that port 10000 is opened http://www.ipv6scanner.com/cgi-bin/main.py
But this site says that it is offline/unreachable https://www.subnetonline.com/pages/ipv6-network-tools/online-ipv6-port-scanner.php
I need help as soon as possible, thank you all. That means that the port is OPENED, but the webmin is unreachable... btw my router cant port forward ipv4 so I am using ipv6...