Getting Started with PHP: Server Security Settings

PHP is a programming language widely used in Web development. It has a wide range of applications, ranging from simple forms to complex e-commerce websites. PHP can be used to implement it. However, like any other web application, PHP applications need to be secure. This article will introduce the PHP Getting Started Guide: Server Security Settings.

1. Keep server programs updated

The first step is to ensure that all relevant programs on the server are up to date. This includes operating systems, web servers, database servers, and PHP itself. Frequently upgrading server programs can reduce the chances of attackers exploiting known vulnerabilities to compromise your server.

2. Disable unnecessary PHP functions

PHP provides some powerful functions, but some of them may cause security threats to the server. For example, the eval() function can execute arbitrary code, so it should be disabled. Likewise, the system() and exec() functions can be disabled to prevent attackers from executing dangerous system commands through these functions.

3. Disable registering global variables

PHP allows form data to be stored directly as global variables, but this gives attackers another way to inject malicious code. This situation can be avoided by setting the register_globals parameter to Off.

4. Using secure session management

PHP provides some session management functions to help developers manage user authentication and session expiration. Using these functions can prevent session hijacking attacks and ensure that the user's data is kept safe.

5. Preventing SQL Injection Attacks

SQL injection is a common attack method in which an attacker attempts to inject SQL queries into a web application input to gain access to the database. access permission. To avoid this, you need to use parameterized query methods in PHP extension libraries such as PDO or MySQLi to prevent attackers from injecting arbitrary code.

6. Disable Error Messages

Even simple error messages can provide an attacker with a wealth of information about the server. Therefore, you need to set display_errors to Off in the PHP configuration and log the errors to a safe location.

7. Protect sensitive data

Sensitive data should be stored encrypted, such as passwords should be stored using hash encryption technology to prevent attackers from obtaining the user's sensitive information. Likewise, you need to ensure that sensitive data is encrypted during transmission and protected using the HTTPS protocol.

Summary

The security of PHP programs is very important, because security holes can lead to data leaks, server crashes and other serious problems. By applying the above security measures, you can increase the security of your PHP program and prevent attackers from exploiting known vulnerabilities to invade the server.

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