Adding a firewall rule to open port 9998 for Linux agent

1. vi /etc/sysconfig/iptablesFollow these steps to add a rule to iptables to allow incoming connections on port 9998: Edit iptables:
   
   
   
   
   Find the following line in the file:
   -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
   
   Add the following line BEFORE the above line:
   -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 9998 -j ACCEPT
   
   Restart iptables:
2. service iptables restart
   
   
   Other Port related articles:
   Required Ports for the Uptime Infrastructure Monitor Monitoring Station
   What ports need to be open to add an ESX or vCenter system to Uptime Infrastructure Monitor? What ports are required for WMI agentless monitoring
   Changing the Windows Agent Port Configuring SQL Server Ports