Enumeration Methodology

=Use tools such as Whois Lookup

=Use Subnet Mask Calculators

=Use tools such as Nmap (nmap -sP xx.xx.xx.xx - xx)

=Use tools such as Nmap (nmap -sS xx.xx.xx.xx - xx)

=Use tools such as Hyena and Network Security Auditor, NetScanTools Pro

=Use tools such as Oputils, engineers Toolset

=Use tools such as Softerra LDAP administrator

=Use commands such as ntptrace, ntpdc and ntpq

=Use tools such as Netscan tools pro

=Use Windows utility NSLookup

=use tools such as Nmap, Ike-scan, Svmap, NetscanTools Pro