get server detail : uname -a cat /etc/redhat-release Check Port Status : netstat -na | grep 8080 lsof -i -P |grep http Check Port Status in iptables : iptables-save | grep 8080 Add the port : Add the port Add the test port in /etc/services file and allow the port to accept packets. Test port can be added by editing /etc/services file in below format: vi /etc/services service-name port/protocol [aliases ...] [# comment] testport 8080/tcp # Application Name Open firewall ports : firewall-cmd --zone=public --add-port=8080/tcp --permanent firewall-cmd --reload iptables-save | grep 8080 firewall-cmd --permanent --add-port=8080/tcp firewall-cmd --permanent --add-port=8080/udp firewall-cmd --reload