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Follow these 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

 

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