the port is open
TCP
IN: 20, 21, 22, 25, 53, 80, 110, 143, 443, 465, 587, 993, 995, 2030, 2031, 2082, 2083, 2086, 2087, 2095, 2096, 2304
OUT: 20, 21, 22, 25, 53, 80, 110, 113, 443, 2030, 2031, 2082, 2083, 2086, 2087, 2095, 2096, 587, 993, 995, 2080, 2443, 2304
UDP
IN: 20, 21, 53, 2304
OUT: 20, 21, 53, 113, 123, 2304
Whitelist configuration
UDP IN ipv4 (Source) 2301 to 2304 (Destination) CWP: allow a client to connect from ''ipv4'' via ''udp'' to port(s) 2301 to 2304
I also tried
TCP This server to connect to: TCPA specific port 2304