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Issues with Oracle Linux firewall

in Database Networking (MOSC) 1 commentAnswered ✓

I'm setting up TNS connections from a prod server to a clone server. I'm having a problem connecting from the Prod server to the clone via the listener (1521). Pings work to and from both servers. From the Prod server, the telnet connection to the clone server over 1521 fails with Connection refused. The firewalls on both Prod and Clone are not running.


From the clone server, everything works.

CLONE server IP - 192.168.56.101

telnet 192.168.12.153 1521 - this works

telnet 192.168.56.101 1521 - this works


ping 192.168.12.153 - works

ping 192.168.56.101 - works

Pings work to and from both servers.



From the Prod server, the telnet connection to the clone server over 1521 fails with Connection refused.

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