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Hello and welcome to f ISOL532. Because of the complexities and difficult questions surrounding network security, you need to fully understand the fundamentals of network security. Once you have a firm grasp of these basic issues, you will be able to put security into practice on your own network.A written security policy is the foundation of a successful security endeavor. Without a written policy, security will be chaotic and uncontrolled. A security policy defines and assigns roles and responsibilities to personnel within the organization. Network infrastructure design can have a significant impact on security. Administrators can employ numerous network components and devices to support a network security policy. These include firewalls, VPNs, and IDSs/IPSs.What specific threats do YOU see in today’s global environment?