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List of contents of this article:

• 1, Linux server plusFirmly meet the third-level requirements of etc.
• 2, How to use trusted computing to securely reinforce the Linux system
• 3, How to strengthen your nginx and php under the linux system
• 4 、Linux security reinforcement linux security reinforcement
• 5,Trade data-driven portfolio management What does linux security reinforcement mean_linux system reinforcement

Linux server reinforcement meets the third-level requirements of equal protection

1. It should be configured according to the actual situation. For example, SSH security, account weak password security, environment security, turning off useless services, turning on firewalls, etc. We have taken Centos7 as an example. Let's briefly talk about the SSH network security reinforcement of the linux system.

2. It is recommended that the operating system identify and identify the logged-in users.No, the complexity of identity identification information configuration requires a regular replacement policy, avoid using weak passwords, including at least letters and numbers, and a password length of at least 8 digits.

3. The basic requirements of the third level of protection are physical security, network security, host security, application security, communication security, security management system, and security technology.

4. Basic requirements of the third-level security. The third-level security means that the confidentiality, integrity and availability of the information involved in the network information system have high requirements, which need to have basic requirements: network security management system: a complete network security management system must be established, including security strategies and security regulations. Fan, safety process and safety control, etc.

How to use trusted computing to securely reinforce the Linux system

Linux system security reinforcement is based on the characteristics of the system and application, and uses a series of specifications or principles to configure security. Theoretically, it has nothing to do with trusted computing. If it must be involved, it can be used for batch online systems. Period safety maintenance.

Use the command vim /etc/pam.d/su to modify the configuration file and add rows to the configuration file. For example, if only admin group users are allowed to su to root, add auth required pam_wheel.so group=admin.

Because ordinary users can use the ready-made password decryption tool to guess the password in a desperate way.A safer way is to set the shadow file /etc/shadow, and only users with special permissions are allowed to read the file. In the Linux system, if you want to use shadow files, you must recompile all utilities to support shadow files.

For example, hackers can use the finger service to find the user's phone, use the directory and other important information. Therefore, many Linux systems cancel all or partially these services to enhance the security of the system.

Modify the system password; check whether the system has set the correct UMASK value; lock unnecessary system users and groups in the system; prevent flood attacks; disable X-windows services; strengthen the TCP/IP protocol. It's better to make a backup before all operations to prevent data loss.

How to strengthen your nginx and php under the linux system

1. Fool-like one-click start, one-click switching environment (nginx+apahce), One-click to switch the PHP version (1-3), without knowing any code and manual configuration.

2. The way PHP connects to mySQL is not necessarily related to the Linux operating system. It is completely independent of the operating system. In the current version of PHP, you can install mySQLi extension or pdo extension.

3. All need to install mysql mysql source code installation 3. If you need to install apaChe: Apache installs other configurations of apache, please search on this page: apache - if you need to install nginx: nginx visit php - depend on module compilation.

4. Part 5 is the system layer optimization of Nginx: After learning this part, you can effectively adjust the CPU, memory, network, disk and other configurations under the Linux operating system, and cooperate with the instructions in Nginx.conf to maximize the performance of Nginx.

5, /etc/host.conf After Centos7, iptables will be replaced by firewall. Of course, we can also use iptables. First, we need to delete fOnly after irewall can iptables be used. Technology is always progressing, and the old ones will be gradually replaced. There are still many security reinforcements in the Linux system. If you want to continue, you can consult the information.

Linux security reinforcement linux security reinforcement

1. Some attacks on operating system vulnerabilities, such as Buffer Overflow, Rootkit , DDos, etc. are also increasing, thus promoting the development of Linux system security reinforcement technology.

2, dd if=/dev/zero of=/dev/sda bs=4M seek=1 The security reinforcement of Linux system can be divided into system reinforcement and network reinforcement. The business needs of each enterprise are different and should be configured according to the actual situation.

3. So how to ensure the security of the Linux system? Today, the editor will summarize nine common methods to protect the security of the Linux system, hoping to help you. Using SELinux SELinux is used to strengthen the security of Linux. With it, users and administrators can have more control over access control.

4. As we all know, network security is a very important topic, and the server is the most critical link in network security.

5, /etc/host.conf in Centos7In the future, iptables will be replaced by firewall. Of course, we can still use iptables. First of all, we need to delete the firewall before we can use iptables. Technology is always progressing, and the old ones will be gradually replaced. There are still many security reinforcements in the Linux system. If you want to continue, you can consult the information.

6. With the prevalence of the open source system Linux, its application in large and medium-sized enterprises is also gradually popularized. The application services of many enterprises are built on it, such as Web services, database services, cluster services, etc.

What does linux security reinforcement refer to_linux system reinforcement

1. Reinforce TCP/IP protocol. It's better to make a backup before all operations to prevent data loss.

2. E-government and other industries have high requirements for data confidentiality, reliability and high availability of the system, so the security of the system is also particularly important. In a word, Linux system security plusThe background of solid technology is mainly the security problems brought about by the widespread use of the Linux operating system and the improvement of system security requirements in different industries.

3. The most widely used server management panel in Linux system. There are professional paid versions and free versions of the pagoda panel. The general free version functions are enough. The professional version provides system reinforcement, firewall and other security defense software.

4. Linux system security reinforcement is based on the characteristics of the system and application, and uses a series of specifications or principles for security configuration. Theoretically, it has nothing to do with trusted computing. If it must be involved, it can be used for the post-security maintenance of batch online systems.

5. The security reinforcement of the Linux system can be divided into system reinforcement and network reinforcement. The business needs of each enterprise are different and should be configured according to the actual situation.For example, SSH security, account weak password security, environment security, turning off useless services, turning on firewalls, etc. We have taken Centos7 as an example. Let's briefly talk about the SSH network security reinforcement of the linux system.