Restricted interface
Restricted interface: A security principle that advocates for limiting the exposure of the working of a system. It involves providing only the necessary features and functionalities needed to fulfill specific tasks, thereby reducing the attack surface and limiting the potential for misuse. By restricting the functionality and information available, the scope for errors or security […]
Remote Terminal Units (RTUs)
Remote Terminal Units (RTUs): Devices deployed in the field that interface with sensors or other equipment to collect real-time data, typically in industrial control systems like SCADA. They serve as a focal point for monitoring and controlling physical processes, converting sensor signals into digital data that can be sent to a central system or controller […]
Restrictive defaults
Restrictive defaults: A security principle that advocates for configuring systems with the most secure settings by default. This approach limits access and permissions to the minimum necessary, requiring explicit granting of additional access by users or administrators to ensure security and prevent unintended access or breaches.
Renewal
Renewal: The process of extending the validity of something, such as a digital certificate or subscription to a security service. This is an important process that ensures continued protection and access to service. Failure to renew may lead to a lapse in service, possibly leaving systems unprotected or causing service disruptions.
Reverse DNS
Reverse DNS: A process of resolving an IP address back to a domain name. Unlike the standard (forward) DNS lookup which translates a domain name into an IP address, rDNS does the opposite. This can be used as a simple form of verification, as it can be slightly more difficult for a malicious party to […]
Repeaters
Repeaters: A network device used to regenerate or replicate a signal. Repeaters are used in communication networks to extend the reach of a signal, overcome attenuation, or improve signal quality. They operate at the physical layer of the OSI model, receiving a signal, regenerating it, and then retransmitting it, thereby extending the physical limits or […]