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Following a few high profile cyber attacks, especially on the public sector I've seen a recommendation being made to implement a stand alone IT provision independent of the network.<br />
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How is this implemented and how does it work in practice? &nbsp;If the entire network has to be shut down for some time to contain the attack, how would critical business system then operate and how would users be able to access their systems?
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Following a few high profile cyber attacks, especially on the public sector I've seen a recommendation being made to implement a stand alone IT provision independent of the network.

How is this implemented and how does it work in practice?  If the entire network has to be shut down for some time to contain the attack, how would critical business system then operate and how would users be able to access their systems?

Stand Alone IT Service Provison

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

The cyber security specialization covers the fundamental concepts underlying the construction of secure systems, from the hardware to the software to the human-computer interface, with the use of cryptography to secure interactions. Cyber security refers to the protection of personal or organizational information or information resources from unauthorized access, attacks, theft, or data damage. This includes controlling physical access to the hardware, as well as protecting against the harm that may come via network access, data and code injection, and due to malpractice by operators, whether intentional, accidental, or due to them being tricked into deviating from secure procedures.