title: I cannot connect after enable Firewalld on CentOS7
body: <p>I'm trying to setup LAMP to CentOS7 with <a href="https://www.digitalocean.com/community/tutorials/how-to-install-linux-apache-mysql-php-lamp-stack-on-centos-7" rel="nofollow noreferrer">a guide</a>. I tried to run these commands to allow HTTP and HTTPS traffic:</p>
  <pre><code>sudo firewall-cmd --permanent --zone=public --add-service=http 
  sudo firewall-cmd --permanent --zone=public --add-service=https
  sudo firewall-cmd --reload
  </code></pre>
  <p>But system give this error:</p>
  <pre><code>FirewallD is not running
  </code></pre>
  <p>So I <a href="https://www.liquidweb.com/kb/how-to-start-and-enable-firewalld-on-centos-7/" rel="nofollow noreferrer">searched</a> for it then apply these commands:</p>
  <pre><code>systemctl enable firewalld
  systemctl start firewalld
  </code></pre>
  <p>Then it printed &quot;completed&quot; output but my connection was aborted and I cannot connect to the server with IP:Port with <a href="https://www.putty.org/" rel="nofollow noreferrer">PuTTy</a> anymore.</p>
  <p>What should I do? The only access to the server was that way for me. I have no physical access to the server.</p>