Allow connection to custom service (firewall)

Open SuSE 10.3, I installed a service zabbix_agentd and configured it to accept connections from a server on my network in order to collect performance information. In the past the localhost was SuSE 9.x, did not use the firewall, and I figured out how to edit /etc/services and add port entries for 100050, 100051 for zabbix, then push a custom allow rule for the service into the iptables.

The vendor switched to using the Firewall now instead. My service is running, but queries to port 100050 timed out. I used YAST, security, firewall to add the two ports to the allowed list (under advanced) and now the connections report “reset by host”.

How do I get the firewall to allow connections to the zabbix_agentd service?