ABSTRACT

Section 2.2 focuses on Internet, intranet, and extranet security. Chapter 7 talks to the security issues resulting from the advent of highspeed, broadband Internet access. Broadband access methods are thoroughly discussed and the related security risks described. How to achieve broadband security in view of its rapidly increasing popularity is explained as difficult but not impossible. Chapter 8 provides new perspectives on the use of VPNs. With the growth of broadband, more companies are using VPNs for remote access and telecommuting, and they already are widely used to protect data transiting insecure networks. Several new mechanisms are identified that add to the feasibility of increased use of VPN technology. Following that, Chapter 9 examines firewall architectures, complete with a review of the fundamentals of firewalls, the basic types, and their pros and cons. This chapter explains in detail the various kinds of firewalls available today and comes to some excellent conclusions. Chapter 10 presents a case study of the use of personal firewalls as host-based firewalls to provide layered protection against the wide spectrum of attacks mounted against hosts from networks. The conclusions from the case study contain some surprising advantages discovered for the use of personal firewall technology in a host environment. Chapter 11 deals with wireless security vulnerabilities — probably the most frequently discussed issue we face these days. The author describes the three IEEE wireless LAN standards and their common security issues. The security mechanisms available (network name, authentication, and encryption) all have security problems. This chapter is a must for those using or intending to use wireless LANs.