Network enumeration  From Wikipedia, the free encyclopedia
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Network Enumeration is the discovery of hosts/devices on a
network, they tend to use overt discovery protocols such as ICMP
and SNMP to gather information, they may also scan various ports
on remote hosts for looking for well known services in an
attempt to further identify the function of a remote host.The
next stage of enumeration is to fingerprint the Operating System
of the remote host.   A network enumerator or network scanner'
is a computer program used to retrieve usernames and info on
groups, shares, and services of networked computers. This type
of program scans networks for vulnerabilities in the security of
that network. If there is a vulnerability with the security of
the network, it will send a report back to a hacker who may use
this info to exploit that network glitch to gain entry to the
network or for other malicious activities. Ethical hackers often
also use the inform