403 Forbidden Error while accessing appian 18.1 server URL

I have configured the appian 18.1 setup in local machine and it was started successfully using jboss 6.4 server.

But I am not able to access the URL.

Error : 403 forbidden.

URL : http://<FQDN>:8080/suite/admin

Please anyone help me out.

Thanks in advance.

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