title: Unable to yum install anything on RHEL
body: <p>I am on a new RHEL system.</p>
  
  <p>I seem to be unable to be able to install anything package via yum install.</p>
  
  <pre><code>yum install nmap
  </code></pre>
  
  <p>The current repos in </p>
  
  <pre><code>ls /etc/yum.repos.d/
  google-chrome.repo  redhat.repo         rhel-source.repo
  </code></pre>
  
  <p>What could be going wrong ?</p>
  
  <p><strong>OUTPUT OF YUM INSTALL:</strong></p>
  
  <pre><code>$ sudo yum install nmap
  [sudo] password for user: 
  Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
  Updating certificate-based repositories.
  Setting up Install Process
  No package nmap available.
  Error: Nothing to do
  </code></pre>