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Oracle Linux 7: Server Application Getting "connection refused" From Remote Servers (Either IPTABLES service OR FILEWALLD) (Doc ID 2342158.1)

Last updated on SEPTEMBER 21, 2021

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Linux OS - Version Oracle Linux 7.0 and later
Information in this document applies to any platform.

Symptoms

An application is getting "connection refused" from other servers. The application is accessible from localhost and also it listens to the expected port.

 

Changes

Both new installation or upgrade completion.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
 Determine if the FIREWALLD service is being used.
  Determine if the IPTABLES service is being used.
  Caution: checking the firewall using "iptables -L" is not sufficient.
References


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