Iptables Port Redirect Not Working For Localhost on Oracle Linux 6 (Doc ID 2517055.1)

Last updated on SEPTEMBER 14, 2021

Applies to:

Symptoms

Redirecting a web service from port 80 to any other port might not work when the access comes from the same host (Localhost)

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From Localhost to port 80
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Error:

[root@localhost ~]# curl http://127.0.0.1:80
curl: (7) couldn't connect to host
[root@localhost ~]#

[root@localhost ~]# curl http://<host IP >:80
curl: (7) couldn't connect to host
[root@localhost ~]#

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From outside to port 80
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Working: 

[root@desktop-localhost ]# curl http:// <public-ip >:80
Welcome to Oracle Support 

Changes

 Web service is listening to port  9080

 Redirection port for port 80 is set to port 9080 on IPtables configuration.

Cause

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