Infrastructure Security

To ensure that the underlying infrastructure is safeguarded, network infrastructure security necessitates a comprehensive approach of ongoing activities and practices. When deciding which measures to implement, the Cybersecurity and Infrastructure Security Agency (CISA) suggests using numerous ways.

Segment and isolate networks and functions - The entire infrastructure layout should be given special consideration. Proper segmentation and segregation is a powerful security strategy for preventing potential intruder exploits from spreading to other sections of the internal network. Using hardware such as routers, networks can be separated, creating boundaries that filter broadcast traffic. When attacks are detected, these micro-segments can be further restricted or even shut down. Virtual separation is similar in design as physically separating a network with routers but without the required hardware.

Limit needless lateral communications - Peer-to-peer communications within a network should not be disregarded. Intruders could move easily from computer to computer if peer communication is unfiltered. As a result, attackers can create persistence in the target network by incorporating backdoors or installing apps.

Harden network devices - One of the most important ways to improve network infrastructure security is to harden network devices. It is recommended to follow industry standards and best practices for network encryption, available services, safeguarding access, strong passwords, protecting routers, preventing physical access, storing up configurations, and testing security settings on a regular basis.

Access to infrastructure equipment must be kept secure. - Administrative rights are granted to certain trusted users to allow them access to resources. To secure user identity, deploy multi-factor authentication (MFA), manage privileged access, and managing administrative credentials.

Out-of-band (OoB) network management entails implementing dedicated communications pathways in order to manage network devices remotely. By segregating user traffic from management traffic, this improves network security.

Validate the integrity of hardware and software - Gray market products pose a hazard to IT infrastructure by providing an entry point for an attack into a network. Illegitimate products can come pre-installed with malicious software, ready to be delivered into an unwitting network. Organizations should run integrity checks on their devices and software on a regular basis.