{{Admon/important |firewalld|In this lab we will be using ''iptables'', '''<u>not</u>''' ''firewalld''. Although both can be used at the same time, that would be too advantaged that this point of learning Linux network administration.<br><br>In the first labs, '''Prep for labs''', you should have disabled and stopped the firewalld service: [http://zenit.senecac.on.ca/wiki/index.php/OPS335_Installation_Lab#Using_iptables Prep for Labs].<br><br>You can confirm that also check the status of the firewalld service is disabled by using issuing the '''systemctl''' command to check the status. You can also check if the firewalld service is running by issuing '''iptables -L''' and noting a high volume of unexpected output(i.e. "strange result).