Network Scanning (CEH)
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                                  Concepts  Objectives  Types of Scanning
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                        Definition  Discover live hosts   Port Scanning
                                      Identify IP addresses   Network Scanning
                                      Find open ports       Vulnerability Scanning
                                      Determine operating systems 
                                      Detect system architecture 
                                      Identify running services 
                                      Discover vulnerabilities 
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                                                Techniques         Tools
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                                    TCP Communication Flags  Host Discovery   Nmap
                                                /             /           Hping3
                                               /             /            Metasploit
                                    SYN (Synchronize)  ARP Ping Scan     NetScanTools Pro
                                    ACK (Acknowledgment) ICMP Ping Scan  Mobile Scanning Tools
                                    PSH (Push)         TCP Ping Scan     (IP Scanner, Fing,
                                    URG (Urgent)                         Network Scanner)
                                    FIN (Finish)       
                                    RST (Reset)