Appendix C. Preventing Security Breaches with ExecShield

IN THIS APPENDIX

ExecShield is designed to prevent security breaches caused by software programs written to crawl through the Internet looking for systems with common vulnerabilities such as worms and viruses. It is enabled in the kernel and works in a way that is nonintrusive to the user. Its goal is not to defend against the expert hacker who has broken into your local network or an employee inside the company who already has access to parts of the network. Its goal is to prevent against intruders using scripts that look for vulnerabilities in the way a program running with root privileges is written.

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