ABSTRACT
This category of system also includes more traditional
network devices such as routers, switches, and wireless
network devices.
Critical infrastructure systems: includes those systems that are important for running the network. For exam-
ple, mail servers, DNS servers, Web servers, authenti-
cation servers. When establishing which infrastructure
systems are most critical, try to determine what the
business impact would be if the system was unavail-
able. This category of system also includes more tradi-
tional network devices such as routers, switches, and
wireless network devices.
