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- Starting from the command line: Building a secure Linux server environment
- Start from the command line: Build a secure Linux server environment With the development of the Internet, more and more companies and individuals have begun to build their own servers to host websites, applications, etc. However, security issues also arise. In order to ensure the security of the server, we need to build a secure Linux server environment starting from the command line. This article will introduce some key steps and code examples to help you build a more secure Linux server environment. Updating your operating system and software Before you begin, first make sure your server
- Linux Operation and Maintenance 1046 2023-09-08 09:14:05
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- Linux Server Security: Hardening Web Interfaces to Block XXE Attacks.
- Linux Server Security: Hardening Web Interfaces to Prevent XXE Attacks Introduction: With the widespread use of Web applications, server security has become an issue of increasing concern to Internet users. Over the past few years, external entities have assumed the role of accessing web servers and performing malicious actions that could lead to server compromise. Among them, XXE attacks are one of the most common and dangerous types of attacks. This article will introduce the principles of XXE attacks and provide steps on how to harden web interfaces to prevent XXE attacks and improve L
- Linux Operation and Maintenance 736 2023-09-08 08:36:25
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- How to use the command line to enhance your Linux server security
- How to use the command line to enhance the security of your Linux server Summary: In this article, I will share some common command line operations that can help you enhance the security of your Linux server. These operations include updating the system, using firewalls, configuring access control lists, and setting up logging. By using these tips, you can maximize your server's security and reduce potential security risks. Keywords: Linux server, security, command line, firewall, access control list, logging Introduction in today’s digital world
- Linux Operation and Maintenance 1051 2023-09-08 08:07:48
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- Web Interface Security: Why Using a Linux Server Is a Smart Move?
- Web Interface Security: Why Using a Linux Server Is a Smart Move? With the rapid development of the Internet, more and more applications use Web interfaces to realize data interaction and service invocation. However, with it comes an increase in security threats. Therefore, when choosing a server operating system, it is a wise move to adopt the Linux operating system. This article will take Web interface security as the topic, explore the advantages of Linux servers, and give relevant code examples. 1. Security of Linux Server 1.1 Open Source Code
- Linux Operation and Maintenance 1240 2023-09-08 08:07:41
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- Linux server security and performance optimization: the best of both worlds
- Linux server security and performance optimization: the best of both worlds In today's Internet era, Linux servers have become the preferred server operating system for most enterprises and individuals. How to improve the security and performance optimization of Linux servers has become an important issue that every administrator and operation and maintenance personnel pay attention to. This article will introduce some commonly used Linux server security and performance optimization methods and techniques, and provide corresponding code examples. 1. Security optimization prohibits root remote login. In order to prevent remote hacker attacks, the root remote login should be prohibited.
- Linux Operation and Maintenance 1261 2023-09-08 08:05:01
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- What is the command to enter a directory in linux?
- The directory entry command in Linux is cd. The cd command is used to navigate to a specific directory in the Linux system. You can use the cd command to enter the directory under the current working directory or other directories. Its usage is: 1. The syntax to enter the directory under the current working directory is "cd ./"; 2. The syntax to enter other directories is "cd /home/user/documents/"; 3. The syntax to enter the root directory is " cd /”; 4. Enter the specified directory, etc.
- Linux Operation and Maintenance 2390 2023-09-05 17:39:03
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- How to check what version of linux is
- How to check the version of Linux: 1. Use the command line tool lsb_release -a, cat /etc/os-release, cat /proc/version and other commands; 2. Check the release logo, open the terminal and enter cat /etc/*- release command; 3. View the system information tool, use the systeminfo command to view; 4. View the /etc/issue file; 5. View the /var/run/motd file, etc.
- Linux Operation and Maintenance 2292 2023-09-05 14:04:56
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- What are the uses of grep in linux?
- The usage of grep in Linux includes basic usage, ignoring case, regular expression search, reverse search, counting the number of matching lines, recursive search, output line number and searching from the input stream, etc. Detailed introduction: 1. Basic usage. The basic usage of the grep command is to find lines containing the specified pattern in the file. To find the lines containing "example" in the file file.txt, you can execute the command "grep "example" file.txt "; 2. Ignore case. By default, grep is case-sensitive and so on.
- Linux Operation and Maintenance 8290 2023-09-05 11:14:08
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- How to delete a file in linux
- The methods to delete a file in Linux are: 1. Use the rm command, which is a common command to delete files or directories; 2. Use the unlink command, which is used to delete files. Similar to the rm command, the unlink command can only delete files, but not directories. ; 3. Use file manager, open the file manager, locate the directory where the file you want to delete is located, then select the file, right-click and select options such as "Delete" or "Move to Trash".
- Linux Operation and Maintenance 1864 2023-09-05 10:28:10
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- What is the command to modify files in Linux?
- Linux file modification commands are the "mv" command and the "cp" command. Their usage are: 1. The mv command is used to move files or rename files. Its basic syntax is "mv [option] source file target file", mv The command has some optional options, such as "-i" means to confirm before overwriting the file, "-f" means to force the file to be overwritten, and "-v" means to display detailed operation information, etc. The source file is to be moved or renamed. The path of the file. The target file refers to the path of the target file, which can be a folder path or a new file name, etc.
- Linux Operation and Maintenance 1462 2023-09-12 15:00:36
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- How to test whether the port is accessible in Linux
- How to test whether the port is accessible in Linux: 1. The telnet command can be used to test whether the port of the remote host is open, and test the port by trying to establish a TCP connection with the specified host and port; 2. The nc command can be used to create and monitor , scan and transmit network connections, and can also be used to test port connectivity; 3. ping command, you can use port redirection to redirect data packets to the specified port to test port connectivity; 4. wget command , you can download the file at the specified URL. If the download is successful, the port will be opened.
- Linux Operation and Maintenance 11736 2023-09-12 17:38:36
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- What are the commands to modify files in Linux?
- Linux file modification commands include: 1. chmod, used to change the permissions of a file or directory; 2. chown, used to change the owner of a file or directory; 3. chattr, used to change the extended attributes of a file; 4. truncate, used Used to truncate or clear files; 5. touch, used to update the access and modification timestamps of files; 6. mv, used to move or rename files; 7. cp, used to copy files; 8. rm, used to delete files ;9. ln, used to create symbolic links and so on.
- Linux Operation and Maintenance 2371 2023-09-12 17:32:50
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- What is the usage of grep in linux?
- The usage of grep in Linux is to search for lines of text that match a specific pattern and output the matching lines. The grep command has a variety of options and usages, allowing flexible search and matching operations according to different needs. Commonly used options are: 1. -i, ignore the case of characters when searching; 2. -n, display matching line numbers; 3. -c, count the number of matching lines; 4. -r, recursively search in the specified directory Search files under; 5. -l, only display file names containing matching items; 6. -v, reverse matching, output lines that do not contain matching items, etc.
- Linux Operation and Maintenance 2051 2023-09-12 17:42:58
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- How to delete user group in linux
- There are two ways to delete user groups in Linux: command line tool to delete user group and graphical interface to delete user group. Detailed introduction: 1. Command line tool to delete user group. Use groupdel command to delete user group. groupdel command is used to delete in Linux. For user group commands, use the gpasswd command to delete a user group. The gpasswd command is a command used to manage user groups in Linux. Use the usermod command to delete a user group. It is a command used to modify user attributes; 2. Method to delete a user group through the graphical interface.
- Linux Operation and Maintenance 2522 2023-09-01 15:45:38
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- What is the command to view the configuration in linux?
- The command to view the Linux configuration is: 1. "lsb_release -a" to view the Linux distribution and version information; 2. "ifconfig" to view the network interface, IP address and related configurations; 3. "cat /etc/resolv.conf" , displays the DNS configuration information; 4. "cat /etc/hosts", displays the local host name resolution configuration; 5. "cat /etc/fstab", displays the file system mounting configuration.
- Linux Operation and Maintenance 2486 2023-08-31 10:25:52
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