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Device not being created in FNO On prem 2018 R1

Device not being created in FNO On prem 2018 R1

Symptoms

Whilst creating a device in FNO on premise 2018 R1 it has been observed that an error is produced whilst selecting an account. In the flexnet.log the error is:
2018-10-01 05:23:56,955 [default task-6] ERROR (interceptors) [ADMN] SecurityInterceptor: Failed to execute Action:
com.opensymphony.xwork2.XWorkException: null
	at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:117) ~[struts2-core-2.5.13.jar:2.5.13]
	at com.opensymphony.xwork2.validator.DefaultValidatorFileParser.parseActionValidatorConfigs(DefaultValidatorFileParser.java:82) ~[struts2-core-2.5.13.jar:2.5.13]
	at com.opensymphony.xwork2.validator.AnnotationActionValidatorManager.loadFile(AnnotationActionValidatorManager.java:378) ~[struts2-core-2.5.13.jar:2.5.13]
Caused by: java.net.UnknownHostException: struts.apache.org
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) ~[?:1.8.0_102]
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[?:1.8.0_102]

Cause

This issue is caused by restricting FNO so that it cannot connect to the internet. This may be due to a proxy or a firewall.

Resolution

To resolve the issue you would need to allow the following URL's in the firewall or proxy :

*.flexera.com,
*.flexnetoperations.com,
struts.apache.org,

jakarta.apache.org,

tiles.apache.org,
*.hibernate.org,
hibernate.sourceforge.net,
*.jboss.org,
*.springframework.org,
*.root-servers.net,
schemas.xmlsoap.org,
w3.org,
xml.apache.org,
xmlns.jcp.org,
*.flexerasoftware.com and most importantly
localhost
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