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What is DevOps

Is a philosophy of the efficient development, deployment and operation of the highest quality software possible.

What must not be done

• Create a team of devops, since it promotes the creation of another silo

What must be done

• Create cross functional teams, since it promotes colaboration

Tenents

• Culture
• Automation
• Measurement

Purpose

Objectives

• Understand what firewall are and why are they useful
• Know the tools to control the firewall 
• Be familiar with firewalld and firewall-cmd program
• Know how to work with zones, sources, services and ports

What is a Firewall

Is a program that monitors and controls data packages for both incoming and outgoing network connections, allowing or denying communication according given configurations.

These can be either hardware or software based tools, that can be found in the network routers as individual computers.