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How to ensure sufficient security in code in PHP language development?

How to ensure sufficient security in code in PHP language development?

PHP language is a scripting language widely used in web application development. However, PHP's openness and easy extensibility also lead to security issues. The following are several ways to ensure adequate security in PHP development: Use defensive programming The basic idea of ​​defensive programming is to take into account possible security issues when writing code and add corresponding protection measures to the code to prevent be attacked. Common defensive programming methods include input validation, output encoding, error handling, logging, etc. For example, when receiving user input

Jun 09, 2023 pm 06:42 PM
PHP安全 开发安全策略 代码安全性
Container orchestration and automated operation and maintenance technology in Java

Container orchestration and automated operation and maintenance technology in Java

With the widespread application of cloud computing and containerization technology, container orchestration and automated operation and maintenance technology play an important role in the field of software development and operation and maintenance. This article will focus on the related concepts, tools and applications of container orchestration and automated operation and maintenance technology in Java. 1. Container orchestration technology Container orchestration refers to the process of automatically managing and deploying container applications, which usually includes load balancing, automatic expansion, service discovery, security and high availability. In the Java ecosystem, there are many container orchestration tools to choose from. Here are some

Jun 09, 2023 am 09:06 AM
Java 容器编排 自动化运维
What are the common high-availability architecture deployment solutions in MySQL?

What are the common high-availability architecture deployment solutions in MySQL?

Cluster Deployment Schemes in MySQL Preface Let’s talk about the commonly used deployment schemes in MySQL. MySQLReplicationMySQLReplication is an officially provided master-slave synchronization solution, used to synchronize one MySQL instance to another instance. Replication plays an important role in ensuring data security and is currently the most widely used MySQL disaster recovery solution. Replication uses two or more instances to build a MySQL master-slave replication cluster, providing single-point writing and multi-point reading services, and realizing read scaleout. In the above example, one master database (M) and three slave databases (S), through replication, Mas

Jun 03, 2023 am 11:05 AM
MySQL
Does linux come with ssh?

Does linux come with ssh?

Linux comes with ssh. The Linux system will come with its own ssh software. The default is the OpenSSH related software package, and the ssh service is added to start automatically at boot. You can use the "ssh-V" command to view the installed ssh version information. Execute the "systemctlstartsshd" command to start the sshd service. The default port is port 22. Does Linux come with SSH? Servers are usually in the computer room. If you have to go to the computer room every time to maintain the server, it will be uncomfortable. So Linux has a function that allows you to send messages remotely using a shell, which is ssh (abbreviation of SecureShell). That is to say, a service will be started on the server to receive remote

May 31, 2023 pm 01:06 PM
Linux ssh
How to install Mysql in Ubuntu to enable remote connections

How to install Mysql in Ubuntu to enable remote connections

The background is Baidu Cloud's cloud server (the same applies to other cloud servers). The system is Ubuntu20.04LTS, Mysql version 8.0+. The requirement is to develop on Windows. You can remotely connect to read and write MySQL on the server at any time to establish a remote connection to the server. To connect, you can use an SSH client or the web console provided by the cloud server manufacturer. As long as you can connect to the server, you will be fine. By the way, I personally recommend a good-looking and easy-to-use SSH client: NextSSH uses apt-get to install mysql. First update the apt warehouse. : sudoapt-getupdate By the way, because I don’t know what accounts you are using, and I don’t know which commands require higher permissions, so

May 31, 2023 am 08:09 AM
MySQL Ubuntu
Example analysis of server-side request forgery SSRF in Redis

Example analysis of server-side request forgery SSRF in Redis

SSRF, that is, server-side request forgery. When the server needs to request resources, the requested resources, protocols, paths, etc. can be controlled by the user. This can cause SSRF attacks. This article focuses on the SSRF attack on the Redis service through the gopher protocol, and then getshell. Gopher protocol format First, let’s understand what the gopher protocol is and what the format looks like: gopher://://_ followed by TCP data stream. When we test the attack on redis, we can use the curl that comes with Linux for testing. If you use Centos, in order to ensure the success of the experiment, it is best to turn off Centos's selinux. Turn off selinux:setenfor

May 30, 2023 am 09:18 AM
redis SSRF
laravel deployment project

laravel deployment project

Laravel is a modern PHP framework with a complete MVC architecture, object-oriented development model, powerful routing control, flexible ORM, rich tool libraries and template engines. It is widely popular in web application development. . In this article, we will introduce how to deploy a Laravel project on a Linux server. Preparation work Before deploying the Laravel project, you need to ensure the following conditions: 1. Server system: mainstream Linux systems such as CentOS or Ubuntu 2. Server environment: N

May 29, 2023 am 10:43 AM
How to use Python's socket and socketserver

How to use Python's socket and socketserver

1. Socket programming based on TCP protocol 1. The socket workflow starts with the server side. The server first initializes the Socket, then binds to the port, listens to the port, calls accept to block, and waits for the client to connect. At this time, if a client initializes a Socket and then connects to the server (connect), if the connection is successful, the connection between the client and the server is established. The client sends a data request, the server receives the request and processes the request, then sends the response data to the client, the client reads the data, and finally closes the connection. An interaction ends. Use the following Python code to implement it: importso

May 28, 2023 pm 08:10 PM
Python socket socketserver
Example analysis of Redis vulnerability exploitation

Example analysis of Redis vulnerability exploitation

1. Introduction Redis-related vulnerabilities have existed for a long time, and there are still scenarios that can be exploited. This time, we will summarize and reproduce the redis-related vulnerability exploits so that we can quickly establish exploitation ideas when encountering them in the future. 2. Introduction to redis Redis is a key-value storage system. Similar to Memcached, it supports relatively more stored value types, including string (string), list (linked list), set (**), zset (sortedset--ordered **) and hash (hash type). Redis largely compensates for the shortcomings of key/value storage such as memcached. In some cases, it can play a role in relational databases.

May 28, 2023 pm 08:08 PM
redis
How to install MySQL via SSH on CentOS VPS

How to install MySQL via SSH on CentOS VPS

Enter yuminstallmysql-server and press y to continue the installation. Set up to start mysql. Enter chkconfig --levels235mysqldon and then start tomcat. Enter servicemysqldstart to complete the startup. Then log in to mysql to set the password. Enter setpasswordfor'root'@'localhost'=password('12345678') ;To set the password, mysql is installed! and then create

May 28, 2023 pm 01:24 PM
MySQL ssh CentOS
Alibaba Cloud ecs builds nodejs project

Alibaba Cloud ecs builds nodejs project

Alibaba Cloud is a well-known cloud computing service provider in China. Its cloud server ECS (Elastic Compute Service) allows us to deploy nodejs projects quickly and efficiently. Below we will introduce in detail how to use Alibaba Cloud ECS to build a nodejs project. Step 1: Purchase an ECS instance. First, log in to your account on the Alibaba Cloud official website, enter the Alibaba Cloud ECS interface, and click the "Buy ECS Instance Now" button to purchase. When purchasing, you need to select the appropriate configuration and service period, and set root

May 28, 2023 am 11:21 AM
Nginx performance optimization methods

Nginx performance optimization methods

Linux System Parameter Optimization Some of the configurations mentioned below require a newer Linux (2.6 or above) kernel to support them. The author uses CentOS7.4, kernel version 3.10. If it does not meet the needs, it is best to upgrade accordingly. After all, patching is a thankless task. For system-level tuning, we usually just modify the file descriptor limit, buffer queue length, and number of temporary ports. File descriptor limit Since each TCP connection occupies a file descriptor, once the file descriptor is exhausted, a new connection will return an error such as "Toomanyopenfiles". In order to improve performance, we need to modify it: 1 .System level restrictions

May 28, 2023 am 08:01 AM
nginx
How to get SickOS 1.2 Flag

How to get SickOS 1.2 Flag

The experimental environment is as follows: Basic idea: NetworkScanning (network scanning Netdiscover, Nmap) Directorybrute-force (website directory scanning dirb) FindHTTPOptions:PUT (find HTTP options curl) GeneratePHPBackdoor (generate php backdoor Msfvenom) Uploadandexecuteabackdoor (upload php backdoor) Reverseconnection (Metasploit) PrivilegeEscalation(cronjob)Importpyt

May 27, 2023 pm 10:40 PM
SickOS Flag
golang code deployment

golang code deployment

With the continuous development and application of cloud computing technology, more and more enterprises are beginning to deploy applications to the cloud. As an efficient, lightweight, and highly efficient language, golang is favored by more and more companies. So how should we operate when deploying golang applications to the cloud? This article will introduce the golang code deployment process and related technical points in detail. 1. Preparation work Before starting golang code deployment, the following preparation work needs to be completed: 1.1 To determine the cloud server, first ensure that the cloud service has been selected

May 27, 2023 pm 06:25 PM

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