2.6. Conclusion

In this chapter, a high-level overview of network security was provided. The way network communications take place was discussed. Example security attacks were described. Terminology associated with security services was introduced. Protection against attacks using firewalls and prevention mechanisms that make use of cryptography were considered with examples of Kerberos, IPSec, and SSL. Detection of security attacks, security assessment of networks and systems, and response to security incidents were briefly discussed.