As you have seen in this chapter, a systematic troubleshooting approach coupled with sound knowledge of the Cisco Network Security products can make a troubleshooter's life painless. One very important piece in this systematic approach is the tools and techniques without which fact-findings might be inaccurate or incomplete. Chapter 2, "Understanding Troubleshooting Tools," discusses a summary version of the commands and tools available for the security devices to be successful in a fact-finding process. Subsequent chapters discuss troubleshooting tools and techniques in greater detail based on specific products to make Cisco network security troubleshooting efficient. So, buckle up and start this exciting and challenging journey through Cisco network security troubleshooting.