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Allow the TCP port 2652 in firewall. Make the firewall rule permanent so that it can survive reboot.
firewall-cmd --add-port=2652 --permanent; firewall-cmd --reload
firewall-cmd --add-port=2652/tcp --permanent; firewall-cmd --reload; firewall-cmd --list-all
firewall-cmd --add-port=2652/tcp; firewall-cmd --reload
In order to keep a server secure, firewall is a crucial piece of software. We can allow or block connections to specific service, port or on full server with firewall. The firewall service daemon name RHEL 7 based OS's is firewalld. However, the command line tool name is firewall-cmd. For this question, we are allowing traffic to TCP port 2652 from everyone. DON'T forget to add the port type. with a / after port number. View any rules you have added with --list-all. Command explanation: firewall-cmd = base command --add-port= = option to add a TCP or UDP port --add-service= = option to add a service --permanent = make rules permanent in order to survive reboot --reload = reload firewall rules in order to activate new rule. --list-all = List all firewall rules. zone = Specify firewall zones
Example screenshot: http://prntscr.com/ge6co3
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