A network infrastructure can be identified as a public or private network that carries information of high financial value. Network infrastructure can also be defined physically as the whole network or a part of the network that exchanges information of high significance. Since the security system is usually located at the network access point, it is imperative to have a security plan for the access point.
In addition, interoperability among individual security systems must be provided and security
nodes must be monitored and controlled. Only a combination of measures can
result in improved protection of critical network infrastructures. Services with
high financial value, such as banking, e-commerce, and trade, exchange
confidential data worldwide, beyond the boundaries of national network
regulation and legislation. Other industries, such as aviation, space transport,
mass transit, and shipping, also depend on the network infrastructure.
There are several examples of damage that may result from vulnerabilities or defects in today’s network infrastructures.
Power supply can also affect the physical aspects of network infrastructures. Natural disasters can damage important data
even if perfect back-up systems are available. Other examples of dependent infrastructures include energy infrastructures,
such as oil and natural gas. Similarly, cyber disruptions can result in damages of these infrastructures stretching over
a wide geographical range. A reliable international security system is necessary, if such damage is to be prevented in
While communication networks have become an ever-increasing part of our daily lives, so does our dependency upon their
underlying infrastructure. Unfortunately, as our dependency has grown, also hostile attacks on the infrastructure by
network predators have increased in number and impact.
In the case of the Internet, it is appropriate to define pertinent parts as network infrastructures, because its objective
is to simultaneously share information that is open to many anonymous users, and it has been increasingly used as a means
to exchange information which is important for society and the economy.