Open ssh Port using Firewalld

# If you want it permanent
# firewall-cmd --zone=public --add-port=22/tcp --permanent
# firewall-cmd --reload

#If you want it temporarily
#firewall-cmd --zone=public --add-port=22/tcp

https://linuxconfig.org/how-to-open-ssh-port-22-on-rehdat-7-linux-server