1. Chassis intrusion detection mechanism
Network Security Industrial Motherboard is usually equipped with chassis intrusion detection function. There are special sensors or circuits on the motherboard to detect whether the chassis is illegally opened. When the chassis is opened, the sensor detects the state change and triggers an alarm signal. This alarm signal can be sent to the monitoring system through the management interface of the motherboard or directly prompted locally in the form of sound and light. For example, some motherboards use micro switches as chassis intrusion detection sensors, which are installed on the side panels or cover edges of the chassis. Once the side panels or cover panels are opened, the state of the micro switches changes, and the motherboard will recognize the intrusion behavior, thereby ensuring the motherboard's first line of defense in physical security.
2. Anti-tampering chip and circuit design
In order to prevent internal chips or circuits from being tampered with, Network Security Industrial Motherboard adopts a variety of designs. Some motherboards integrate anti-tampering chips, which have special encryption and authentication mechanisms. If the chip detects abnormal access or attempts to tamper with internal data, it will automatically trigger protection measures, such as locking the chip or erasing key data. In terms of circuit design, a physically unclonable function (PUF) circuit is used. The PUF circuit generates a unique identifier based on the random physical characteristics of the chip manufacturing process, which is used for device authentication and to prevent cloning attacks. The existence of this circuit makes it difficult for attackers to copy the key circuit structure of the motherboard, thereby increasing the difficulty of physical intrusion.
3. Sealing and protective coating
In terms of preventing physical intrusion, the Network Security Industrial Motherboard also uses sealing and protective coating technology. For some key chips and circuit areas, sealing materials are used for packaging to prevent damage from external factors (such as dust, moisture, etc.) while preventing illegal physical contact. The protective coating can cover part or all of the motherboard area. This coating has a certain hardness and wear resistance and can resist minor physical scratches and damage. For example, the use of a special epoxy resin coating can not only protect the motherboard from physical damage, but also prevent damage to the motherboard components caused by electrostatic discharge (ESD), thereby indirectly ensuring the physical security of the motherboard.
4. Security locks and fixings
The installation method of the Network Security Industrial Motherboard in the chassis also takes into account the prevention of physical intrusion. The motherboard is equipped with a security lock or a special fixing device to firmly fix the motherboard in the chassis. The security lock can be in the form of a mechanical lock or an electronic lock, which can only be unlocked by authorized personnel using a specific key or password. This design prevents the motherboard from being easily disassembled or moved, making it more difficult for attackers to obtain the motherboard. At the same time, a special fixing device can ensure that the motherboard will not loosen or shift when subjected to external forces such as vibration and impact, ensuring the normal operation of the motherboard and also helping to prevent physical intrusions that may occur in these situations.
