Security Management of Information Technology

Firewalls

Firewall

Intranet

Server

Firewall

Router

Router

Intranet

Server

Host System

Internet

1

2

3

4

4

5

1

External Firewall

Blocks Outsiders

2

Internal Firewall

Blocks Restricted Materials

3

Use of Passwords and Browser Security

4

Performs Authentication and Encryption

5

Careful Network Interface Design

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