SELinux is a security-enhanced Linux. Its full name is Security-EnhancedLinux, which is a security module of the Linux kernel. It can provide mandatory access control function, through which the security of the system can be better protected. SELinux can effectively prevent malicious programs from abusing system resources by controlling the permissions of processes to access resources. In SELinux, there are three working modes: Enforcing, Permissiv

With the rapid development of the Internet, Internet security issues have become increasingly important. In the online world, spam is a common problem that not only wastes users' time and resources, but may also cause security risks. In order to deal with this problem, we need to add corresponding security strategies to the development of the website. This article will introduce an anti-spam technology in PHP, let us learn about it together. PHP is a popular server-side scripting language that is widely used in website development. To protect the site from spam, we can

How to configure CentOS system to limit the security policy of process resource usage Introduction: In a multi-process system, it is very important to reasonably configure and limit the resource usage of processes, which can ensure the stability and security of the system. This article will introduce how to use the tools and configuration files provided by the CentOS system to limit the resource usage of the process, and provide some practical code examples. Part One: Configuration Files CentOS system provides some files for configuring system resource limits, they are: /etc/secu

Pagoda Panel is an excellent server management software that provides website administrators with a fast and efficient way to manage and maintain the server operating environment. In the daily server management process, firewall settings are a very important part, it can help us protect the security of the server. In the Pagoda panel, we can set up the firewall through simple operations, which will be introduced in detail below. First, we need to log in to the server management page of the Pagoda panel. In the menu bar on the left, select the "Security" column, and then you can see the "Prevention

Website security has always been one of the focuses of attention of the majority of netizens. With the rapid development of the Internet, more and more websites are attacked by hackers, and users' personal information and assets are also facing serious threats. In order to protect the security of websites and users, developers need to adopt effective security strategies to defend against various attacks. This article will focus on input data validation and filtering technology in PHP to help developers improve website security. First, let’s understand what input data validation and filtering is. Input data validation is performed on the input data submitted from the user side.

To set a security policy in Windows, you need to follow the following steps: Open the "Security Policy Snap-in"; select the policy category to be managed (for example, local policy, account policy); browse the policy list, double-click the policy to be modified; adjust as needed settings; click OK to save changes. How to set Windows security policy Step 1: Open the security policy snap-in, press Win+R, enter "secpol.msc", and then press Enter. Step 2: Select a policy category In the left pane, expand Security Settings and select the policy category you want to manage, for example: Local Policy Account Policy Restricted Group Policy Step 3: Browse and modify the policy In the right pane, Browse the list of strategies. Double-click the policy you want to modify, and then root

Firewall and Security Policy Implementation Guide in PHP With the popularity of the Internet and the continuous expansion of application fields, network security issues have become increasingly prominent. As a widely used programming language, the security of PHP has also attracted much attention. To protect the security of our websites and applications, we need to implement some firewall and security policies. This article will introduce you to the firewall and security policy implementation guide in PHP and provide code samples for your reference. 1. Firewall Implementation Guide Data Filtering Before receiving user input, the data must be filtered to ensure that only

How to deal with PHP security vulnerabilities and attack risks? With the development and popularization of the Internet, network security problems have become increasingly serious. As a widely used programming language, PHP also faces security vulnerabilities and attack risks. This article will introduce how to deal with PHP security vulnerabilities and attack risks to protect the security of websites and applications. Timely Updates to PHP Versions PHP developers regularly release updated versions that fix some known security vulnerabilities. Keeping your PHP version updated can ensure that your code uses the latest security patches. Certainly