APACS Realtime IO Server Port question

We have an old system running APACS Realtime I/O server version 4.43 on windows 2000.  It has been working correctly until we tried to move the wonderware node to a diferent place on the network.  Does anyone know what ports the I/O server needs to be opened to work correctly?  Thanks in advance

-Ross

Port 2000 is used to communicate between the IO server and an RNI (i.e. DOS_NIM), IEM, or EIM.

Between the IO server and the SCADA/HMI layer, the Suitelink protocol is utilized and uses Port 5413 (tcp)

The SuiteLink Service (a.k.a. slssvc.exe) in WonderWare SuiteLink before 2.0 Patch 01, as used in WonderWare InTouch 8.0, allows remote attackers to cause a denial of service (NULL pointer dereference and service shutdown) and possibly execute arbitrary code via a large length value in a Registration packet to TCP port 5413, which causes a memory allocation failure.
References: [CVE-2008-2005], [BID-28974]

-- OR --

Update it to MatrikonOPC APACS OPC server. It supports 2008R2 OS and is still being developed, due to 20,000+ installations.