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Let us see how we have configured the C20 system, what are the different configuration settings again

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Initially when we installed that VMs the hostname, it was showing localhost localdomain.

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Nothing was visible in dnsdomainname.

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Then we changed the name with the hostnamectl commands, set-hostname.

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c20.example.com.

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Then we logout and it is showing that the name of our system is C20 with the hostname.

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We verified whether name was given properly or not.

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C20.example.com, dnsdomainname example.com and initial.

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The host file will have only the host localhost entries.

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Then we disable the firewall network.

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manager.

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Then we made changes install one iptables packages because we have disabled this firewalld services

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we wanted to enable the another service iptables-services.

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So in your case, if it is not installed, it will ask for the confirmation you have to press y.

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If it is already installed, it will give the message, then you are going to flush the rule.

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Then we'll save with iptables save command.

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And with a iptables list, you can verify that our firewall is effectively disabled or not.

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By running this command, it will show that the policy by default policies accept, then we check the status

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of selinux, sestatus, it is in disabled.

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How we disabled by making changes in /etc/sysconfig/selinux file by default here the setting is enforcing.

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We change it to disabled.

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Then we check the IP addresses and network adapters settings.

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initially it is NAT because we want to install the packages and IP address given was 192.1

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68.142.138.

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How the system obtained the address because by default the configuration setting of our

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land card or network adapter card are stored in which file it is in /etc/sysconfig/network-scripts.

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Ifcfg-ens33 and the setting is dhcp that mean obtain automatically then install the packages

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wget, git, elinks, curl and your lynx package.

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And when asking for the confirmation we said yes, if it is already installed we are going to

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get this message.

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that already installed.

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And you can verify it with rpm query command also.

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So we can see that your git packages is instaaled curl is installed everything is installed.

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Then we change the IP address of this system to 172.24.0.20 and mask to 255.255.0.0.

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And we change the bootprotocol from dhcp to static.

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Then we power off the system and we made the adapter settings from NAT to Bridge.

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Then we verified whether it is bridge and with ip a s ens33 command.

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We verify the address whether it is okay or not.

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So it is showing 172.24.0.20 and again in host file we made entry by using vi editor

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172.

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24.0.20 c20.example.com.

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So that is how we configured your c20 system.