Pterodactyl Official Documentation for Panel Installation: Click Here
Ports to Open: 80,443,2022,5657,56423,8080,25565-25575
Commands to Open Ports from terminal:
apt install firewalld -y && firewall-cmd --permanent --zone=public --add-port=22/tcp
firewall-cmd --permanent --zone=public --add-port=80/tcp
firewall-cmd --permanent --zone=public --add-port=443/tcp
firewall-cmd --permanent --zone=public --add-port=2022/tcp
firewall-cmd --permanent --zone=public --add-port=5657/tcp
firewall-cmd --permanent --zone=public --add-port=56423/tcp
firewall-cmd --permanent --zone=public --add-port=8080/tcp
firewall-cmd --permanent --zone=public --add-port=8080/udp
firewall-cmd --permanent --zone=public --add-port=25565-25575/tcp
firewall-cmd --permanent --zone=public --add-port=25565-25575/udp
firewall-cmd --reload