FreeBSD6 Unleashed

Chapter 30. Network Security

IN THIS CHAPTER

• Choosing a Security Model Based on Your Security Risks

• Security Models

• The Security Risks You Face

• Password Policies

• Avoiding Problems with Clear-Text Services

• Securing Terminal Traffic (SSH)

• Securing Email Services (POP3 and IMAP)

• Securing FTP

• Securing Apache

• System Security Profiles and Kernel Security (Securelevels)

• Using a Firewall

• Preventing Intrusions and Compromises

• Denial of Service (DOS) Attacks

• Physical Security

• Other Security Resources

System security is arguably the most important part of any administrator’s job, whether it applies to a Windows server, a commercial UNIX system, Linux, or FreeBSD. More books have probably been written about security issues than about any other topic—and with good reason. ...