DB2 jdbc connection error Connection refused. ERRORCODE=-4499, SQLSTATE=08001

I have a new DB2 server (v10.5.0.3), and I can connect to the database locally just fine.

When trying to connect from a remote server using JDBC I am getting the “Connection refused. ERRORCODE=-4499, SQLSTATE=08001” error. Based on information found here https://www-304.ibm.com/support/docview.wss?uid=swg21403644 I have confirmed that

[[email protected] ~]$ db2set -all
[i] DB2COMM=TCPIP
[i] DB2AUTOSTART=YES
[g] DB2SYSTEM=db2.xxxx.com
[g] DB2INSTDEF=db2inst1
[g] DB2ADMINSERVER=xxxxxx

and

[[email protected] ~]$ db2 get database manager configuration | grep -i svce
 TCP/IP Service name                          (SVCENAME) = 50001
 SSL service name                         (SSL_SVCENAME) = 

with these JDBC connection values

driver=com.ibm.db2.jcc.DB2Driver
url=jdbc:db2://db2.xxxxx.com:50001/TESTGEN
username=XXXXXXXX
password=XXXXXXX

I have verified that the firewall on the both servers have opened ports 50000 and 50001. I’ve run out of ideas, any help is greatly appreciated.

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