What are the principles of safety guard design

The design of safety guards requires the quality and originality of the article.

1. Open design principles: design should not be secret, open design is safer.

Now it's more about the keys than the algorithm. Many of the algorithms are open-source and public.

Don't use "private" encryption algorithms.

2. Fail-default security principle: whitelist is better than blacklist.

Failure Safety: Any responsible bear should have an emergency safety mechanism in case of failure of the handling function, and be careful with error messages and logs to prevent information leakage. For example, if there are too many login failures, the account will be locked.

Default security: The default configuration should be the security state.

Example: The customer service found that the management port of the device can be directly accessed through the mobile phone, which has a security vulnerability. Since there is no security setup after the initial installation.

3. The principle of separation of authority: a mechanism requires two keys to unlock, which will only be more robust and flexible than one key.

Aristotle's Separation of Powers: Legislative, Executive, and Judicial.

System Administrator, Security Administrator, Security Auditor.

Example: IIS6, Microsoft splits extranet server requests into two accounts, one for normal users and one for highly privileged users. Improved security.

4. The principle of least privilege.

Example: The flashlight software on your phone has applied for permissions such as storage, contacts, etc.

5. Principle of economic applicability: The design should be as simple and compact as possible.

For example, AK47 is simple and easy to use.

Double encryption: The SSL protocol is used and the symmetric encryption algorithm is used. Affected performance.

Cryptographic components, component-based design.

6. The principle of minimum publicity: try to avoid providing scenarios where multiple objects share the same resource, and the number and use of resource access should be minimized.

Minimization of shared memory.

7. Principles of Security Arbitration:

Each visit must be audited by a security check.

The client has less security mechanisms because hackers will bypass him.

Example: A user can convert a URL to a log without verifying permissions.

DNS poisoning, hackers tamper with client host files.

1. Eye protection (safety goggles, goggles) 2. Head, face and respiratory tract.

Protective (masks, face shields, personal respirators, gas masks.)

Hat) 3. Physical protection (lab coats, isolation gowns, onesiesuits, etc.) 4. Hand and foot protection (gloves, shoe covers) 5. Ears (hearing protectors, etc.).

The principles for setting up safety guards are as follows:

First, based on the Pingxian Chang beam surface where the operator stands, all kinds of moving parts with a height of less than 2m should be protected.

Second, based on the plane on which the operator stands, where the height is more than 2m, there are material transmission devices, belt transmission devices and below the construction of construction machinery, protection should be set.

Third, where the operating position is more than 2m above the datum of the fall height, protection should be set.

Fourth, in order to avoid crushing injury, the spacing between linear moving parts or between linear moving parts and stationary parts should meet the requirements of safety distance.

Fifth, if the moving parts have travel distance requirements, a reliable limiting device should be set up to prevent injuries caused by over-stroke movement.

Sixth, for injuries that may be caused by component damage due to overload, load limiting devices should be installed.

Seventh, reliable buffer devices must be used to prevent injury accidents caused by inertia on inertial collision moving parts.

Eighth, effective measures must be taken to tighten the parts that may be loose during the movement to prevent loosening due to starting, braking, impact and vibration.

Ninth, each machine should be equipped with an emergency shutdown device to make existing or imminent dangersExams|Big|to be avoided. The identification of the emergency shutdown device must be clear, easy to identify, and quickly accessible to the device, so that the dangerous process can be stopped immediately without additional risk.

Hello. What and what is a safety guard: A fully protected safety device is a device or system used to protect people, equipment and the environment from potential hazards and injuries.

Here are some common safety guards:1Hard Hat:

It is used to protect the head and mitigate injuries that may be caused by a fall, collision or other accident. 2.Goggles Face Shield:

It is used to protect the eyes and face from damage caused by particles, chemicals or other harmful substances. 3.Respiratory Protection:

For example, masks, respirators, etc., are used to filter harmful particles, gases or vapors in the air and protect the respiratory system. 4.Protective gloves:

Used to protect hands from hand injuries caused by chemicals, sharp objects or other hazardous substances. 5.Protective clothing:

For example, protective clothing, fireproof clothing, etc., are used to protect the body from dangerous factors such as chemicals, high temperatures, radiation, etc. 6.Safety Shoes:

It has features such as anti-slip, anti-puncture and anti-electric shock to protect the feet from accidental injuries. 7.Safety Warning Signs:

It is used to restrict personnel from entering dangerous areas and prevent accidents. 9.Fire extinguishers and firefighting equipment:

It is used to extinguish and control fires, protect people and property. 10.Security door locks and limb access control systems:

It is used to control access to specific areas and ensure that only authorized personnel can enter.