In Qradar community edition if you need to allow a port in IP tables follow the steps.

Add the following lines for example for opening port for WinCollect

Edit /opt/qradar/conf/iptables.conf and add the following line.

-A QChain -m state --state NEW -m tcp -p tcp --dport 8413 -j ACCEPT

Execute the following script to make changes to take effect immediately

$ /opt/qradar/bin/iptables_update.pl