Can't access to a Redhat Linux 7.1 server

exchangesmith used Ask the Experts™
I just installed a RedHat Linux 7.1 server, but I can't access to this server through SSH or Webmin. I am sure the services are running in the server, because I can access webmin locally. Seems that there is some setting block all out site requests.
Quick help please!!!
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Have you checked the firewall configuration?
if firewall configs are ok, try /etc/hosts.allow and /etc/hosts.deny.

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