Data visualization  Know the 4 denial of service types that can
threaten the Domain Name System  With the number of denial of
service (DOS) attacks growing overall, a variety of techniques
are being used to take advantage of the Domain Name System’s
openness to direct attacks against DNS servers and even against
targets that do not maintain a DNS server.  The asymmetrical
nature of DNS queries — the response often is much greater than
the query — can turn the system against itself by amplifying
attack traffic. With the number of attacks on the rise, security
experts have recommended that organizations change their
approach to defending against DOS attacks.  Radware’s Global
Application & Network Security Report for 2012 cited a 170
percent increase in DNS denial of service attacks from 2011 to
2012 and described four types of attacks targeting or using DNS.
Basic DNS flood  This is much like a brute-force DOS attack
against any server, using high volumes of traffic to overpower a
DNS server. This can use UDP