5.6 Categorize different types of network security appliances and methods.

5.6 Categorize different types of network security appliances and methods.
 * IDS and IPS:
 * Behavior based
 * Signature based
 * Network based
 * Host based
 * Vulnerability scanners :
 * NESSUS
 * NMAP
 * Methods
 * Honeypots
 * Honeynets