P13N Server and App Server on separate systems - strange ports opened

Hi -
          We have a configuration using WebLogic Personalization Server 3.1.1 on one
          server and WebLogic Application Server 5.1 w/Service Pack 6 on another
          server. What we've seen with our firewall configuration is that it appears
          there are high-number random ports opened occasionally from the App Server
          to the P13N Server, which d not appear to be related to connection attempts
          (ex: port 42100). The only communication that we know should be happening
          between the two systems are T3-based JNDI lookups, LDAP lookup/update
          requests, and SQL queries. My questions, then, are as follows:
          1) In handling JNDI requests, are there any callbacks that can occur between
          the two servers in this configuration on a different port?
          2) When separating the P13N Server and App Server, are there any "private"
          ports opened between the two systems for management? As far as I know, the
          App Server should simply view the P13N Server as another client, but the
          firewall log would indicate that something is going on related to this.
          If anyone has a similar config and can provide some info related to
          potentially unseen port connections, please let me know. Thanks in advance!
          Andy
          [email protected]

Haakon,
I think the BPEL forum is the better source to ask
BPEL
Frank

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