Oracle replication port requirements on firewalls
We have two Oracle 11g enterprise edition database servers that needs to replicate data via oracle streams. However these two databases are on untrusted domains and connect via a vpn. The firewall on the one side is a Juniper firewall and on the other side its a TMG firewall.

The listener runs on port 1521 but what other ports or port ranges should be opened for Oracle replication to work correctly to allow full duplex communication between the streams? As it seems that when looking at the firewall logs as well as the network manager portion of the resource manager that Oracle will communicate to port 1521 (the default listener port) to some random high order port on the destination server?
Oracle replication port requirements on firewalls
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We have two Oracle 11g enterprise edition database servers that needs to replicate data via oracle streams. However these two databases are on untrusted domains and connect via a vpn. The firewall on the one side is a Juniper firewall and on the other side its a TMG firewall.

The listener runs on port 1521 but what other ports or port ranges should be opened for Oracle replication to work correctly to allow full duplex communication between the streams? As it seems that when looking at the firewall logs as well as the network manager portion of the resource manager that Oracle will communicate to port 1521 (the default listener port) to some random high order port on the destination server?