The Internet is changing rapidly day by day. Businesses are expanding exponentially using the Internet as a resource. Because of its quick evolution, system monitoring and administration is becoming an endless task. Intrusion detection tools make it easier for administrators to keep a secure network environment. The vandals probing networks for security vulnerabilities may be curious teenagers, disgruntled employees, or corporate criminals from rival companies.
Network intrusion is a systematic process.
This can be done a number of ways. Virtually all server attacks progress in this manner. Intrusion detection tools help system administrators stop network attacks and aid in tracking down the attackers. System flaws that exist in software are the root cause of network intrusions. The next article addresses the type of applications vulnerable to attack, password security, and the importance of security policies.