Perimeterhallinta

Perimeterhallinta, often translated as perimeter control or perimeter management, refers to the set of strategies and technologies employed to establish and maintain a boundary around an organization's digital assets and network. The primary goal is to protect sensitive information and systems from unauthorized access, threats, and malicious activities originating from outside the defined perimeter.

Historically, perimeterhallinta focused on building a strong firewall around the network, acting as a single point of defense. This traditional approach assumed that everything inside the perimeter could be trusted, while everything outside was potentially hostile. As technology evolved and the nature of threats became more sophisticated, this model proved insufficient.

Modern perimeterhallinta encompasses a broader range of security measures. This includes not only firewalls but also intrusion detection and prevention systems (IDPS), virtual private networks (VPNs), access control lists (ACLs), and network segmentation. It also involves continuous monitoring of network traffic, vulnerability assessments, and regular security updates to address emerging threats. The concept has expanded to include the security of cloud environments and remote access points, recognizing that the traditional network perimeter is no longer a clearly defined boundary. The objective remains to create layers of defense to detect, prevent, and respond to security incidents effectively.