How to Perform Regular Server Audits
# How to Perform Regular Server Audits
Performing regular server audits is crucial for maintaining the security, stability, and performance of your MediaWiki installation. This guide provides a comprehensive overview of how to conduct these audits, covering essential areas and offering practical steps for newcomers to server administration.
Why Perform Server Audits?
Server audits are systematic evaluations of your server’s configuration and operational status. They help identify vulnerabilities, performance bottlenecks, and deviations from established security best practices. Regular audits minimize risks and ensure your MediaWiki instance runs smoothly. Key benefits include:
- Security Enhancement: Identifying and mitigating potential security threats.
- Performance Optimization: Discovering and resolving performance issues.
- Compliance Verification: Ensuring adherence to security policies and regulatory requirements.
- Resource Management: Optimizing server resource utilization.
- Proactive Problem Solving: Identifying issues before they cause disruptions.
- Monthly: Basic health checks, log reviews, user account audits.
- Quarterly: Comprehensive security scans, software updates, performance analysis.
- Annually: Full system review, disaster recovery testing, policy updates. See Disaster Recovery Planning for more details.
- System Security: Firewall settings, intrusion detection systems, access controls. See Firewall Configuration
- Software Updates: Operating system, web server, database server, PHP, MediaWiki.
- User Account Management: User permissions, inactive accounts, password policies. See Managing User Accounts
- Log Analysis: System logs, web server logs, database logs, MediaWiki logs. See Log File Analysis
- Performance Monitoring: CPU usage, memory usage, disk I/O, network traffic.
- Backup and Recovery: Backup schedule, backup integrity, recovery procedures. See Database Backups
- Configuration Management: Server configuration files, MediaWiki configuration files. See LocalSettings.php Configuration
- Failed login attempts
- Error messages
- Unauthorized access attempts
- System events
- MediaWiki Security Extensions
- PHP Configuration for MediaWiki
- Database Server Optimization
- Load Balancing
- Caching
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Audit Frequency
The frequency of your server audits should depend on the sensitivity of the data your MediaWiki handles and the level of risk you’re willing to accept. Here’s a recommended schedule:
Areas to Audit
A comprehensive server audit should cover the following areas:
Detailed Audit Steps
Here's a breakdown of the audit steps, categorized for clarity.
1. System Security Audit
| Security Check | Description | Tools |
|---|---|---|
| Firewall Review | Verify firewall rules allow only necessary traffic. | `iptables` (Linux), Windows Firewall |
| Intrusion Detection/Prevention System (IDS/IPS) | Ensure IDS/IPS is active and updated with latest signatures. | `Snort`, `Suricata` |
| Access Control Lists (ACLs) | Review ACLs on critical files and directories. | `ls -l`, `getfacl` (Linux) |
| SSH Configuration | Disable root login, use key-based authentication, change default port. | `sshd_config` |
2. Software Update Audit
Keeping your software up-to-date is vital.
| Software | Update Command/Process | Frequency |
|---|---|---|
| Operating System | `apt update && apt upgrade` (Debian/Ubuntu), `yum update` (CentOS/RHEL) | Quarterly |
| Web Server (Apache/Nginx) | `apt update && apt upgrade` (Debian/Ubuntu), `yum update` (CentOS/RHEL) | Quarterly |
| Database Server (MySQL/MariaDB/PostgreSQL) | `apt update && apt upgrade` (Debian/Ubuntu), `yum update` (CentOS/RHEL) | Quarterly |
| PHP | `apt update && apt upgrade` (Debian/Ubuntu), `yum update` (CentOS/RHEL) | Quarterly |
| MediaWiki | Manual update via Updating MediaWiki | Every New Release |
3. User Account Audit
Reviewing user accounts is important for security.
| Audit Item | Description | Action |
|---|---|---|
| Inactive Accounts | Identify accounts that haven’t been used for a specified period. | Disable or delete inactive accounts. See User Rights Management |
| Privileged Accounts | Review accounts with administrative privileges. | Ensure only necessary individuals have administrative access. |
| Password Policies | Verify password complexity requirements are enforced. | Enforce strong password policies. See Password Security |
| User Permissions | Review user groups and permissions. | Remove unnecessary permissions. |
4. Log Analysis
Regularly analyze logs for suspicious activity. Use tools like `grep`, `awk`, and log management software. Review logs for:
5. Performance Monitoring
Monitor server resources to identify bottlenecks. Tools like `top`, `htop`, `vmstat`, and `iostat` can provide valuable insights. Also, check MediaWiki's performance using the Performance Tuning guide.
Documentation and Reporting
Document all audit findings, including identified vulnerabilities, corrective actions taken, and recommendations for improvement. Create a report summarizing the audit results and share it with relevant stakeholders. Keep a log of all audits performed for future reference. Consider also reviewing Server Security Best Practices.
Additional Resources
Category:Server Configurations
Intel-Based Server Configurations
| Configuration | Specifications | Benchmark |
|---|---|---|
| Core i7-6700K/7700 Server | 64 GB DDR4, NVMe SSD 2 x 512 GB | CPU Benchmark: 8046 |
| Core i7-8700 Server | 64 GB DDR4, NVMe SSD 2x1 TB | CPU Benchmark: 13124 |
| Core i9-9900K Server | 128 GB DDR4, NVMe SSD 2 x 1 TB | CPU Benchmark: 49969 |
| Core i9-13900 Server (64GB) | 64 GB RAM, 2x2 TB NVMe SSD | |
| Core i9-13900 Server (128GB) | 128 GB RAM, 2x2 TB NVMe SSD | |
| Core i5-13500 Server (64GB) | 64 GB RAM, 2x500 GB NVMe SSD | |
| Core i5-13500 Server (128GB) | 128 GB RAM, 2x500 GB NVMe SSD | |
| Core i5-13500 Workstation | 64 GB DDR5 RAM, 2 NVMe SSD, NVIDIA RTX 4000 |
AMD-Based Server Configurations
| Configuration | Specifications | Benchmark |
|---|---|---|
| Ryzen 5 3600 Server | 64 GB RAM, 2x480 GB NVMe | CPU Benchmark: 17849 |
| Ryzen 7 7700 Server | 64 GB DDR5 RAM, 2x1 TB NVMe | CPU Benchmark: 35224 |
| Ryzen 9 5950X Server | 128 GB RAM, 2x4 TB NVMe | CPU Benchmark: 46045 |
| Ryzen 9 7950X Server | 128 GB DDR5 ECC, 2x2 TB NVMe | CPU Benchmark: 63561 |
| EPYC 7502P Server (128GB/1TB) | 128 GB RAM, 1 TB NVMe | CPU Benchmark: 48021 |
| EPYC 7502P Server (128GB/2TB) | 128 GB RAM, 2 TB NVMe | CPU Benchmark: 48021 |
| EPYC 7502P Server (128GB/4TB) | 128 GB RAM, 2x2 TB NVMe | CPU Benchmark: 48021 |
| EPYC 7502P Server (256GB/1TB) | 256 GB RAM, 1 TB NVMe | CPU Benchmark: 48021 |
| EPYC 7502P Server (256GB/4TB) | 256 GB RAM, 2x2 TB NVMe | CPU Benchmark: 48021 |
| EPYC 9454P Server | 256 GB RAM, 2x2 TB NVMe |
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⚠️ *Note: All benchmark scores are approximate and may vary based on configuration. Server availability subject to stock.* ⚠️