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Unified Communication security maintenance is implemented at the following layers: application layer, system layer, network layer, and management layer. Figure 1 shows the security maintenance layers.
Figure 1 Security maintenance layers
Application Layer
Security maintenance at this layer is conducted to ensure that the UC application system runs properly and provides services normally.
System Layer
Security maintenance at this layer is conducted to ensure that the operating system and database run properly, ensuring the proper running of applications at the application layer.
Network Layer
Security maintenance at this layer is conducted to ensure the proper running of switches, routers, firewalls, and the VPN gateway so that the application of security policies (such as the firewall access-control policy and the VPN encryption policy) is ensured.
Management Layer
Security maintenance at this layer is conducted to enhance manual management and log and patch management to prevent potential risks. The preceding layers are involved in management-layer security maintenance.
Parent Topic: Security Maintenance Overview