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:::* A graphical tool for managing virtual machines ('''virt-manager''') and the '''virsh''' command-line tool.<br><br>
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<li value="7">Start the virtualization service: <b><code><span style="color:#3366CC;font-size:1.2em;">service libvirtd start</span></code></b><br><br></li></ol>:'''NOTE:''' The most recent variants of Centos and Fedora are using a service called '''firewalld''' that is intended to replace '''iptables''', however the ''iptables'' service is still in relatively common usage. In this course we will concentrate on ''iptables''.<br><br>
<ol><li value="8">To Disable firewalld issue the following commands:<br>
<b><code><span style="color:#3366CC;font-size:1.2em;">systemctl disable firewalld</span></code></b><br>
<b><code><span style="color:#3366CC;font-size:1.2em;">systemctl stop firewalld</span></code></b><br>
<li>To install and enable the IPTables services, issue the following commands:<br>
<b><code><span style="color:#3366CC;font-size:1.2em;">yum install iptables-services</span></code></b><br>