The security boundary of an information security system includes multiple technical means to protect data and systems from unauthorized access, breaches, or attacks. Key technical measures are:
Firewalls: Network firewalls filter incoming and outgoing traffic based on predefined security rules. For example, a company may use a next-generation firewall to block malicious traffic while allowing legitimate business communications. Tencent Cloud offers the Tencent Cloud Firewall to safeguard network perimeters.
Intrusion Detection and Prevention Systems (IDPS): These systems monitor network traffic for suspicious activities and can automatically block threats. For instance, an IDPS can detect and prevent SQL injection attempts. Tencent Cloud's Host Security (CWP) provides intrusion detection capabilities.
Encryption: Data encryption ensures that sensitive information remains unreadable even if intercepted. This includes encrypting data at rest (e.g., databases) and in transit (e.g., HTTPS). Tencent Cloud provides SSL Certificates and Key Management Service (KMS) for encryption management.
Access Control: Techniques like role-based access control (RBAC) restrict system access based on user roles. For example, only administrators can modify critical server configurations. Tencent Cloud's CAM (Cloud Access Management) enables fine-grained access control.
Endpoint Protection: Security software on endpoints (e.g., antivirus, EDR) detects and mitigates threats on devices. Tencent Cloud's Tencent Cloud Host Security offers endpoint protection against malware.
Network Segmentation: Dividing networks into segments limits the spread of attacks. Virtual Private Clouds (VPCs) and subnets are common methods. Tencent Cloud's Virtual Private Cloud (VPC) helps isolate resources.
Security Information and Event Management (SIEM): SIEM tools aggregate and analyze security logs for threat detection. Tencent Cloud's Security Center provides centralized threat monitoring.
Zero Trust Architecture: This model requires continuous verification of users and devices, even within the network. Tencent Cloud supports Zero Trust principles through identity verification and least-privilege access.
These technical means work together to define and enforce a secure perimeter in an information security system.