Found a total of 10000 related content
Setting up a Multi-Server Security Engine Installation
Article Introduction：This guide demonstrates how to configure a multi-server CrowdSec Security Engine, enhancing your network's collective security. One server acts as the parent (server-1), receiving alerts from child Log Processors (server-2 and server-3). This archit
2025-08-04
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Ubuntu Server Security Best Practices
Article Introduction：Bolstering Ubuntu Server Security: A Comprehensive Guide
Ubuntu Server, a globally popular open-source operating system, powers countless infrastructures. Its efficiency and ease of use make it a favorite, but like any system, it's vulnerable to sec
2025-08-04
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Secure A Multi-Server Security Engine Installation With HTTPS
Article Introduction：The second part of this tutorial will explain how to set up and secure the installation of the multi-server CrowdSec security engine. In the first part, we explain how to set up the CrowdSec security engine on multiple servers, one of which serves as the parent server and the other two forward the alert to it.
This section will solve the security issues caused by plaintext HTTP communication in previous multi-server security engine installations. To solve this problem, we recommend establishing communication between security engines through encrypted channels. This solution allows server 2 or server 3 to trust the identity of server 1 and avoid man-in-the-middle attacks.
Use a self-signed certificate
Creating a Certificate First, you need to create a certificate. This can be achieved by the following single line command:
open
2025-08-04
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422
Database Security Auditing with SQL Server Audit
Article Introduction：To use SQLServerAudit for security auditing, the core step is to configure audit policies and analyze audit logs. 1. Configure audit policy: First create a server audit object, select an audit target (such as file, Windows event log), set an audit level (server or database level), and remember to enable audit; for example, use CREATESERVERAUDIT to create an audit and bind it to a file path, and then specify monitoring events through the server or database audit specifications. 2. Audit events are recommended to pay attention to: login failure (FAILED_LOGIN_GROUP), permission change (SCHEMA_OBJECT_PERMISSION_CHANGE_GROUP), sensitive number
2025-08-04
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385
CentOS Security Hardening: Protecting Your Server from Intruders
Article Introduction：CentOS server security reinforcement can be achieved through the following steps: 1. Keep the system software updated and use the "sudoyumupdate-y" command; 2. Disable unnecessary services, such as "sudosystemctldisablecups&&sudosystemctlstopcups"; 3. Configure SELinux as mandatory mode, use the "sudosetenforce1&&sudosed-i's/SELINUX=permissive/SELINUX=enforcing/g'/etc/selinux/config" command; 4. Regularly
2025-08-04
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What are the best security practices for hardening a Windows Server?
Article Introduction：Protecting Windows Server security requires the following key measures: 1. Update the system and patch management, enable automatic updates, regularly check status and test before deployment; 2. Configure firewalls and restrict port access, close unnecessary ports, create inbound/outbound rules and change RDP default ports; 3. User permissions and account management, disable default administrator accounts, use strong password policies, enable MFA and regularly clean idle accounts; 4. Log audit and intrusion detection, enable audit policies, centralized log management, use IDS/IPS or EDR tools and set alarm mechanisms, thereby comprehensively improving the security protection capabilities of the server.
2025-08-04
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641
Java Security for Server-Side Template Injection
Article Introduction：Preventing server-side template injection (SSTI) requires four aspects: 1. Use security configurations, such as disabling method calls and restricting class loading; 2. Avoid user input as template content, only variable replacement and strictly verify input; 3. Adopt sandbox environments, such as Pebble, Mustache or isolating rendering context; 4. Regularly update the dependent version and review the code logic to ensure that the template engine is configured reasonably and prevent the system from being attacked due to user-controllable templates.
2025-08-04
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How to harden an SSH server for better security?
Article Introduction：To improve the security of SSH servers, we need to start from three aspects: reducing the attack surface, strengthening the authentication mechanism and restricting access rights. First, modify the default port (such as 22 to 2222) to reduce the frequency of automation attacks, and configure the firewall to allow new ports to communicate; second, disable password login, use SSH key pair authentication, generate the key through ssh-keygen and copy the public key to the server, and set PasswordAuthentication and PermitEmptyPasswords to no; again restrict user access, specify the logged-in user through AllowUsers or AllowGroups, prohibit root from logging in directly and turn off non-essential functions such as X11 forwarding; finally cooperate with
2025-08-04
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692
Java Security for Server-Side Request Forgery (SSRF) Prevention
Article Introduction：The key to preventing SSRF is to limit request targets, filter inputs, and use whitelisting mechanisms. Specific practices include: 1. Enter verification, prohibiting users from entering a complete URL or strict verification format, avoiding the use of newURL (userInput), and excluding dangerous protocols and addresses through regular regulations; 2. Use DNS or IP whitelists to parse the target IP and determine whether it is within the allowable range, and identify private IP addresses such as 127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16; 3. Use security libraries to encapsulate network requests, use a unified HTTP client to centrally handle risk points, or introduce proxy services to reduce the attack surface; 4. Properly configure the server environment
2025-08-04
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431
What does local dog chain mean? What are local dog chains?
Article Introduction：There are five common dog chains: 1. Ethereum, which attracts many dog ??projects due to its popularity and rich ecosystem, despite the high gas costs; 2. Binance Smart Chain (BSC), which has become a popular choice for dog projects due to its low fees and close integration with Binance; 3. Base, as Coinbase's Layer 2 solution, provides low cost and high speed, attracting dog projects; 4. Solana, which is famous for its high performance and low fees, is suitable for local dog projects that pursue efficient transactions; 5. Sui, which provides high performance and security as an emerging public chain, has become a new choice for local dog projects.
2025-08-04
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Database-Level Security in SQL Server
Article Introduction：Database-level security settings can be achieved through user permission management, role configuration, and encryption policies. First, follow the principle of minimum permissions, avoid using SA accounts, allocate and review permissions regularly; second, create custom roles such as report_reader to unified permission management, and use high-permission built-in roles with caution; finally, use TDE, column-level encryption, AlwaysEncrypted and SSL encrypted connections to protect static and transmitted data to ensure the overall security of the database.
2025-08-04
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Securing WordPress Against Hackers and DDoS Attacks
Article Introduction：Key Takeaways
Prioritize server security by choosing a host based on security and reputation, not price. Ensure the host runs stable versions of server software, enables a server-level firewall, allows for frequent backups and restores, and has in
2025-08-04
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What are the security policies of php on centos
Article Introduction：Detailed explanation of CentOS server PHP security policy: Building a solid protection system This article will explore in-depth how to build a secure PHP operating environment on the CentOS system, covering multiple aspects such as system level, PHP configuration, permission management, HTTPS encryption and security monitoring, etc., to help you effectively reduce the risk of server attacks. Server security is a continuous improvement process that requires regular review and updates to security policies. 1. System security cornerstone system update: Keep the latest version of the CentOS system and all software packages, install security patches in a timely manner, and plug known vulnerabilities. Firewall protection: Use Firewalld to finely control server network access, and only necessary ports (such as HTTP port 80 and H
2025-08-04
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