CHAPTER 10
Securing TCP/IP
The CompTIA Network+ certification exam expects you to know how to
• 1.5 Explain common ports and protocols, their application, and encrypted alternatives
• 4.1 Explain common security concepts
• 4.3 Given a scenario, apply network hardening techniques
To achieve these goals, you must be able to
• Discuss the standard methods for securing TCP/IP networks
• Compare TCP/IP security standards
• Implement secure TCP/IP applications
TCP/IP wasn’t designed with any real security in mind. Oh sure, you can put usernames and passwords on FTP, Telnet, and other TCP/IP applications, but everything else is basically wide open. Every device with a public IP address on the Internet is constantly bombarded with malicious ...
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