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#Download and run the following script: http://scs.senecacollege.ca/~andrew.smith/ops335/labcheck_network_backup.sh<br><br>This will display a menu of exercises. You can choose any of the items in order, but you should attempt all of them. The script will first reset the firewall settings to CentOS defaults and then make some modifications from those defaults.
#It is highly recommended to attempt to troubleshoot and fix the problem instead of reading the shell script and "cheating" to solve the problem. The point of the exercises is for you to find the problem using regular troubleshooting tools, not to reverse-engineer the shell script!
#Finish the exercises, and record any information you feel you'll need to remember to solve problems like this in the future (e.g. in an assignment and/or in a practical test).
