Adding a firewall rule to open port 9998 for Linux agent

Use the following steps to add a rule to iptables to allow incoming connections on port 9998.

Edit iptables:

# vi /etc/sysconfig/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:

# service iptables restart

For related articles, see:

• Changing the Windows agent port
• Configuring SQL Server ports
• Required ports for the Uptime Infrastructure Monitor monitoring station
• What ports are required for WMI agentless monitoring?
• What ports need to be open to add an ESX or vCenter system to Uptime Infrastructure Monitor?