Editing Network segregation (section)

===== Definition ===== 

Network segregation is the practice of dividing a network into smaller, separate networks, known as segments or subnets. This is typically done for security, performance, or operational reasons.

The main goals of network segregation are to:

1. Enhance Security: By dividing a network into smaller segments, it is easier to control and monitor network traffic. This limits the potential for unauthorized access, mitigates the spread of malware or cyber attacks to other parts of the network, and simplifies security management by reducing attack surfaces.

2. Improve Performance: Network segregation allows for better network traffic management, as it enables network administrators to prioritize and allocate resources to specific segments. This enhances overall network performance by preventing bandwidth congestion and optimizing network utilization.

3. Enable Compliance: Certain regulations or industry standards may require organizations to maintain segmented networks to protect sensitive data. Network segregation allows organizations to isolate critical systems and safeguard data privacy and integrity.

There are several ways to implement network segregation:

1. Physical Segregation: Physical separation of network segments involves using separate physical devices, such as routers and switches, to create distinct networks. This requires dedicated network infrastructure for each segment, which can be costly and complex.

2. VLAN Segregation: Virtual LAN (VLAN) segregation involves logically separating network traffic by assigning different VLAN tags to different groups of devices. VLANs provide a cost-effective way to segregate traffic without requiring separate physical network infrastructure.

3. Network Access Control: Network access control (NAC) solutions can be used to authenticate and authorize network users and devices. By implementing user and device-based policies, NAC can enforce network segregation by granting or denying access to specific segments based on predefined rules.

Overall, network segregation is an essential practice to enhance network security, improve performance, and meet compliance requirements by effectively managing network traffic and segregating resources.