cPanel server has below open ports
TCP inbound Ports : 20, 21, 22, 25, 37, 43, 53, 80, 110, 113, 143, 443, 465, 579, 587, 783, 873, 993, 995, 2077-2080, 2082-2083, 2086-2087, 2095, 2096
TCP outbound Ports : 20, 21, 22, 25, 37, 43, 53, 80, 110, 113, 443, 579, 587, 783, 873, 993, 995, 2073, 2086-2087, 2089, 2195, 2703, 6277, 24441
UDP inbound Ports : 20, 21, 53, 443
UDP outbound Ports : 20, 21, 53, 113, 123, 873, 6277, 24441