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<tr><th>Step</th><td>'''Procedure'''</td><td>'''Explanation'''</td></tr>
<tr> <th>1</th><td>'''Test Network Connectivity'''</td><td>You can use the [http://zenit.senecac.on.ca/wiki/index.php/OPS335_Lab_1#Linux_Network_Connection_Configuration_Troubleshooting steps in lab 1] as a guide, but keep in mind the firewall may be blocking pings and DNS requests.</td></tr>
<tr> <th>2</th><td>'''Verify Service is Running & Service can Connectto Network'''</td><td>You should learn to read the output of '''netstat -atnp''' and '''netstat -aunp''' to complement the '''systemctl status''' command.</td></tr>
<tr> <th>3</th><td>'''Verify Network Connectivity by Deleting iptables Rules'''</td><td>If you have no idea what's going on and need to confirm that you're still sane - clear all the iptables rules and check your configuration then. Keep in mind that the '''iptables -F''' command will delete all your rules but will not set the deafult policies to ACCEPT. This will tell you for sure whether your problem was (or was not) caused by iptables. You can run your saved shell script to reset the iptables rules, and if OK, see which recent command you issued caused a problem with network connectivity.</td></tr>
<tr> <th>4</th><td>x</td><td>x</td></tr>
