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Technical Articles

Operation and Maintenance

Nginx

HTTP request header attack and defense in Nginx reverse proxy

With the rapid development of cloud computing, big data, artificial intelligence and other fields, the scale of Internet application services is getting larger and larger, and the architecture is becoming more and more complex. Among them, Nginx reverse proxy is widely used in load balancing, security filtering, static resource distribution, cache acceleration and other occasions. However, HTTP request header attacks in Nginx reverse proxy also occur from time to time, posing a threat to the security of the application system. This article will discuss the characteristics, hazards and defensive measures of HTTP request header attacks in Nginx reverse proxy. 1. HTTP request header attack

Jun 09, 2023 pm 09:31 PM

nginx 反向代理请求头攻击

Nginx with SSL: Configure HTTPS to protect your web server

Nginx is a high-performance web server software and a powerful reverse proxy server and load balancer. With the rapid development of the Internet, more and more websites are beginning to use the SSL protocol to protect sensitive user data, and Nginx also provides powerful SSL support, making the security performance of the web server even further. This article will introduce how to configure Nginx to support the SSL protocol and protect the security performance of the web server. What is SSL protocol? SSL (SecureSocket

Jun 09, 2023 pm 09:24 PM

HTTPS ssl nginx

Security plugin in Nginx reverse proxy

With the continuous development of Internet technology, more and more enterprises choose to use reverse proxy servers in architectural design to improve website performance and availability. The Nginx reverse proxy server is favored by many enterprises because of its high efficiency and high performance. However, as enterprises rely more and more on reverse proxy servers, security issues have become an issue that cannot be ignored. In order to solve this problem, this article will introduce some security plug-ins commonly used in Nginx reverse proxy. NginxIP filtering module IP filtering is a commonly used one

Jun 09, 2023 pm 09:18 PM

web安全反向代理 Nginx安全插件

Security certificate and TLS optimization in Nginx reverse proxy

Nginx is a high-performance HTTP server and reverse proxy server that can be used to simplify website architecture and optimize network requests. During the reverse proxy process, security certificates and TLS optimization are important factors that can improve the security and performance of your website. This article will introduce relevant knowledge about security certificates and TLS optimization in Nginx reverse proxy. 1. Security Certificate 1.1 What is a security certificate? Security certificates are digital certificates used for authentication, data encryption, and data integrity protection for access to websites. Common security certificates

Jun 09, 2023 pm 09:13 PM

tls nginx 反向代理

How to use Nginx reverse proxy mail server to implement a public mail server

With the development of the Internet, email has been widely used as an important communication tool. Many companies or individuals need to build their own email servers to meet the security and privacy needs of email communications. However, setting up a mail server is not a simple matter, because the mail server requires complex software systems and network environments. Today, we will introduce how to use Nginx reverse proxy mail server to implement the function of a public mail server. Before introducing how to use Nginx reverse proxy mail server, we need to know something first

Jun 09, 2023 pm 09:01 PM

nginx 反代邮件服务器

Nginx operation and maintenance security and security operation and maintenance

Nginx is an open source HTTP server and reverse proxy server that is widely used in the Internet field. As part of the Internet infrastructure, Nginx's operation and maintenance security and secure operation and maintenance are particularly important. Nginx operation and maintenance security configuration security Nginx configuration files directly affect the security of the server, so it is very necessary to carefully review and safely adjust the configuration files during the operation and maintenance process. Some common configuration file issues include: listening ports, reverse proxy, virtual host, user authentication, domain name resolution, etc. Ensure correct

Jun 09, 2023 pm 08:34 PM

安全运维 nginx

Azure Linux, Microsoft's CBL-Mariner Linux distribution, is now live

According to news on May 28, after two years of internal testing, Microsoft launched a public preview version of Azure Linux in October 2022 and publicly launched its release version this week. AzureLinux, the open source container host operating system (OS) for Azure Kubernetes Service (AKS), is now generally available. According to reports, AzureLinux is the Linux distribution of Microsoft's CBL-Mariner. It supports the container host operating system as AKS and is currently in use with Xbox, Playfab, Minecraft and other services and more than 100 Azure services. JimP, Principal Program Manager, Microsoft AzureLinux

Jun 09, 2023 pm 05:47 PM

Linux 操作系统

Nitrux 2.8.1 system release: using Linux kernel 6.3, using Plasma Wayland by default

According to news on June 2, UriHerrera has provided Nitrux2.8.1 system download, which is a monthly release of the Debian-based, systemd-free GNU/Linux distribution built around KDEPlasma and the application ecosystem. Nitrux 2.8.1 sounds like a minor version of Nitrux 2.8, but it is actually a huge update that brings the Linux 6.3 kernel series, Plasma Wayland as the default session, and all the latest KDE software, including Plasma 5.27.5 and Frameworks 5. 106 and Gear23.04.1. AtPlasmaWaylan

Jun 09, 2023 pm 04:45 PM

Linux

Linux mystery showdown: which vs. whereis vs. whatis

You may have used the which, whereis and whatis commands many times on Linux. All three commands are used to find information about other Linux commands. These commands look similar, but they do have some differences. Below is a detailed comparison of which, whereis and whatis commands on Linux. which command Some commands have multiple executable files in different directories. When you run a command, the shell searches for its executable file in the directory specified by the PATH environment variable. To find the directories contained in the PATH environment variable, run the following command in a Linux terminal: ┌──(linuxmi㉿linuxmi)-[~

Jun 09, 2023 pm 04:04 PM

Linux 命令

How to resolve Git merge conflicts

Suppose you and I are co-editing the same file named index.html. I made modifications to the file, committed it, and pushed the changes to the Git remote repository. You also made changes to the same file, made a commit, and started pushing changes to the same Git repository. However, Git detected a conflict because the changes you made conflict with the changes I made. Here's how you can resolve conflicts: 1. Get and merge the latest changes from the remote repository: $gitpull 2. Identify one or more conflicting files: $gitstatus 3. Use a text editor to open the conflicting file: $vimindex.html 4. Resolve conflict. Conflicting modifications will be flagged. you need to choose

Jun 09, 2023 pm 03:58 PM

代码 git

Manage package dependencies like a pro using ldd command on Linux

Managing dependencies is an important part when maintaining your Linux system. The software is complex and relies on many shared libraries and files. Sometimes, it becomes difficult to keep track of the files required by your application. This is where the ldd command in Linux comes into play. ldd is a feature-rich command line tool for tracking shared object dependencies required by your application. Let’s learn how to leverage the ldd command and become an expert in managing dependencies on Linux! What are package dependencies? Software is not just independent source code, but a combination of local source code and code borrowed from external libraries. When these libraries and other shared objects are missing from your system, applications that depend on them may malfunction or even

Jun 09, 2023 pm 03:42 PM

Linux 命令 ldd

Fedora 36 reaches end of life (EOL), upgrade to Fedora 37/38

FedoraLinux36, released on May 10, 2022, reached the end of life on May 16, 2023. This means that after this date, there will no longer be updates of any kind for FedoraLinux36, including security updates or security bulletins. All Fedora Linux 36 updates being pushed to the stable version will also be stopped. Fedora Linux 37, released on November 15, 2022, will continue to receive updates until approximately one month after the release of Fedora Linux 39, which is around November 14, 2023. We encourage users of FedoraLinux36 to upgrade to FedoraLinux37 as soon as possible to ensure they continue to receive

Jun 09, 2023 pm 03:08 PM

Linux

Ubuntu 18.04 LTS release transitions to extended security maintenance

According to news on June 1, Canonical today announced that the Ubuntu 18.04LTS (Bionic Beaver) operating system series has officially transitioned to Extended Security Maintenance (ESM), which will take effect immediately from May 31, 2023. Ubuntu18.04LTS (BionicBeaver) continues its tradition of providing commercial support for UbuntuLTS versions in the form of Extended Security Maintenance (ESM, ExtendedSecurityMaintenance). These versions have reached the end of standard support after five years of maintenance. Ubuntu16 .04ESM products will end support in April 2024. U

Jun 09, 2023 pm 02:41 PM

操作系统

What is the /tmp directory used for in Linux? How is it different from /var/tmp?

If you have used a Linux system, then you must know the /tmp directory, but... if you don't use it much, you may only know this directory and may not have the opportunity to understand it in depth. In addition to this, there is a /var/tmp directory, which looks similar. Today we will learn about the /tmp directory and its difference from the /var/tmp directory. What is the /tmp directory used for? tmp is the abbreviation of the English word temporary. As the name suggests, it is used to store temporary files, such as temporary (required in a short period of time) data used by systems and applications. Most Linux distributions come pre-configured to clear t after every system reboot.

Jun 09, 2023 pm 02:31 PM

Linux /tmp