Upgrading and Repairing Networks Free Open Book

Upgrading and Repairing Networks

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If It's Too Good to Be True, It Isn't

One of the more prevalent scams that has proliferated on the Internet in the past two years is the claim that you can make a fortune by helping out a civil servant, or the wife of an ex-legislator of a foreign country, usually Nigeria. When you get these emails, don't even try to respond. The scam involves your helping the sender transfer his secret funds to another bank outside the originating country. For a small fee, you can receive a few million in return. Yet, after you get involved, the person encourages you to open an account at a bank he uses (which is simply a Web site, not a bank) and transfer funds to that bank. In this manner he can (1) keep your cash and (2) in some cases gain access to your real account information from your own bank.

This is just one example. Again, if it appears too good to be true, it isn't (true)! The Internet can be a great place to learn about new ideas, to get involved in e-commerce, and so on. It can also be a great place to get fleeced.

Another similar scam is an email that appears to come from a reputable company. Recently, emails from a site that appeared to be Microsoft was passed through the Internet. When you receive a suspicious email, look closely at the address of the email. Check the properties page of the email to see where it was sent from. You shouldn't get emails, for example, from Microsoft.com, or Ebay.com, unless you have granted them the right to send you emails. Yet, if you get an email from, say, Microsoft-readnow.com, don't open it! Check those emails carefully.

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     Main Menu
Upgrading and Repairing Networks
Table of Contents
Copyright
About the Authors
Acknowledgments
We Want to Hear from You!
Reader Services
Part I: Up Front: Network Planning and Design Concepts
Part II: Physical Networking Components
Part III: Low-Level Network Protocols
Part IV: Dedicated Connections and WAN Protocols
Part V: Wireless Networking Protocols
Part VI: Lan and Wan Network, Service, and Application Protocols
Part VII: Network User and Resource Management
Part VIII: System and Network Security
Chapter 42. Basic Security Measures Every Network Administrator Needs to Know
Chapter 43. Auditing and Other Monitoring Measures
Chapter 44. Security Issues for Wide Area Networks
You've Been Targeted!
Computer Viruses, Trojan Horses, and Other Destructive Programs
Your Network Under FireCommon Attacks
Network Probes
Spoofing and Impersonation
If It's Too Good to Be True, It Isn't
Preventative Measures
Staying on Top of Security Issues
Chapter 45. Firewalls
Chapter 46. Virtual Private Networks (VPNs) and Tunneling
Chapter 47. Encryption Technology
Part IX: Troubleshooting Networks
Part X: Upgrading Network Hardware
Part XI: Migration and Integration
Appendixes
Index


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