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[[Category:OPS335]][[Category:OPS335 Labs]]
= PACKET FILTERING USING IPTABLES =
===iptables Resources===
Some documentation to get started with (you'll need to find more):
* [https://prezi.com/akyqt4h40oel/iptables-packet-filtering/ Week 3 Notes] Recommended to review and understand prior to performing this lab.
* [https://en.wikipedia.org/wiki/Iptables#Overview Overview] A excellent concise overview of iptables (ignore diagram).
* [https://wiki.centos.org/HowTos/Network/IPTables CentOS Wiki] Listing of basic commands (not all required to know).
==OVERVIEW & PREPARATION==
{{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>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 also check the status of the firewalld service by issuing the [http://zenit.senecac.on.ca/wiki/index.php/Init_vs_systemd#systemd_Command_Usage systemctl] command. You can also check if the firewalld service is running by issuing '''iptables -L''' and noting a high volume of unexpected output (i.e. "a strange result").
}}
