There is not simple enough to open port 1521 on the firewall, since Windows sockets are configured to do port forwarding, which causes Oracle to receive the requests on 1521 but to reply back on random ports.

To make the story short, read about Oracle & Firewalls from Here . You will understand how it's working and what are your options.


Hope that helps,

clio_usa - OCP 8/8i/9i DBA

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