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The Protection of Information in Computer Systems is a 1975 seminal publication by Jerome Saltzer and Michael Schroeder about information security. [ 1 ] [ 2 ] The paper emphasized that the primary concern of security measures should be the information on computers and not the computers itself.
Fail-safe and fail-secure are distinct concepts. Fail-safe means that a device will not endanger lives or property when it fails. Fail-secure, also called fail-closed, means that access or data will not fall into the wrong hands in a security failure. Sometimes the approaches suggest opposite solutions.
Network access control (NAC) is an approach to computer security that attempts to unify endpoint security technology (such as antivirus, host intrusion prevention, and vulnerability assessment), user or system authentication and network security enforcement.
An air gapped network (right) with no connection to a nearby internet-connected network (left) An air gap, air wall, air gapping [1] or disconnected network is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network. [2]
Endpoint detection and response (EDR), also known as endpoint threat detection and response (ETDR), is a cybersecurity technology that continually monitors an "endpoint" (e.g. a client device such as a mobile phone, laptop, Internet of things device) to mitigate malicious cyber threats. [1] [2] [3]
Network cloaking may provide more operational security through obscuring devices from hackers. To access a network behind a gateway, an authorized user must authenticate themselves to the gateway before it allows them to see the devices they are permitted to by the security policy. Network cloaking obscures devices through the cloaking system ...
When used in PPP, CHAP also provides protection against replay attacks by the peer through the use of a challenge which is generated by the authenticator, which is typically a network access server. Where CHAP is used in other protocols, it may be sent in the clear, or it may be protected by a security layer such as Transport Layer Security (TLS).
In this diagram the router is a single point of failure for the communication network between computers. A single point of failure (SPOF) is a part of a system that would stop the entire system from working if it were to fail. [1]