We had to move our iSeries to a DMZ and we applied firewall rules to allow necessary traffic on specified ports from the internal network to the DMZ. For network printing from the iSeries, we have opened iSeries as-netprt port 8474.
Other ports open for pc5250 emulation and data tranfers are
449, 23, 8470-8476.
When trying to print from iSeries, we get message CPD337F Remote device rejected an attempt by the writer to open a connection.
What am I missing? What other port(s) need to be opened for iSeries network printing? This is not my area of expertise and I've had a crash course in AS400 communications and operations.