Discuss and explain the use of Nmap and how it can be used to evade firewalls?

Discuss the components involved in cryptographic technology protocols and explain the common cryptographic standards and methods.

Compare and contrast the best practices for securing wireless networks versus hard-wired networks.

Discuss the need, the use and the essence firewalls in information technology security. Your discussion must include explanation of the rules and processes involved in data packet filtering and firewall management.