Not all regions of the network are suitable for the same access strategy. High-value, high-risk areas such as a machine room, laboratory, server area require significantly higher requirements for network access certification than normal office space. The terminals here often carry core business and sensitive data, which can be disastrous if illegally accessed.
Why do restricted areas need stricter access?
The engine rooms and server areas contain the unit’s core IT assets, and laboratories may have R&D data and testing systems. These areas are characterized by high value, high risk, and very high availability and data security requirements."Is he a worker or not, is there any sign of the equipment?"The restricted areas need to be further developed"Only authorized personnel, registered equipment, approved operations"If the restricted area follows a loose strategy of office space, it will be very influential if illegally accessed or invaded. A more rigorous and sophisticated access strategy is therefore required for the restricted area.
White list access: release only of registered equipment and authorized personnel
The first principle of access to restricted areas is"White list first"The white list can be maintained in multiple dimensions, such as MAC, equipment certificate, account number binding, and linked to asset management, automatically updating the white list when equipment is out of service or changed."The equipment that came to the unknown was mixed into the core area."The risk is the most basic means of access to restricted areas.
Strong certification: multiple factors for high-security areas
The server room and the office area are no longer adequately certified by a code account alone. A stronger authentication method should be introduced. When managers access core equipment, multiple factors can be added (account password plus dynamic tokens, certificates with biometric recognition, etc.), even if the account number is leaked, illegal persons cannot get in. The selection of certification methods is for regional risk levels to match, and the use of restricted areas for robust certification is the least cost-effective and most effective input of security strategies.
Operational audits and temporary authorizations: mark every access
Access to the system is a complete record of who gets in, from which equipment, from which area and, as part of an audit to maintain the log. For scenarios requiring temporary authorization to maintain windows, temporary discharge barriers, etc., temporary authorizations are supported with clear time limits for approval, automatic recovery, and no long-term validity is authorized at any time."Books"It is as clear and clear as it is about security requirements and responsibility.
Isolation and connectivity: rounding up core areas
Access to restricted areas is also linked to network isolation and security connections. The core area is strictly isolated from the office and visitors ' areas through VLAN, ACL, access systems are limited to access boundaries at the time of authorization; and access to restricted areas is secured by firewalls and terminals, which are immediately segregated once anomalies (e.g., core terminal infections, horizontal scans) have been detected. Security in restricted areas cannot be achieved only by accessing this gate, but by linking access, isolation, and linkages to a system that places core assets under multiple protection.
The strategy of the network access certification system in restricted areas such as the machine room, laboratories and so on is centred on:"White list access to secure entrances, multi-factor certification to raise thresholds, operational audit trails, temporary authorization time recovery, isolation of multiple protection links". The restricted areas carry the unit’s core assets, and access strategies are not easy to use."It's a little windy."And there's no way to get in.