🛡️ Windows FileZilla Server Log Analyzer

A professional PowerShell-based security and traffic audit tool designed for FileZilla Server (v1.x and Legacy). This script parses complex FTP logs to provide clear, actionable insights for system administrators.

✨ Key Features

• 📊 Managed Volume Calculation: Accurately calculates total data transfer (MB) per IP using session-state tracking.
• 🔒 Security Audit: Detects and groups brute-force login attempts and automated bot scans.
• ⚪ IP Whitelisting: Define trusted IPs (e.g., internal backup servers) to exclude them from security alerts.
• ⏳ Time-Based Filtering: Configurable variable to process only logs from the last X days (e.g., last 30 days).
• 📁 Error 550 Context: Identifies and lists the specific filenames causing "File Not Found" errors.
• 🌍 English Output: Clean, localized console output with no encoding/character issues.

🛠️ Configuration

At the top of the script, you can customize the following variables:

Variable	Description
$logFolder	The path where your FileZilla Server logs are stored.
$DaysLimit	How many days of history to analyze (e.g., 30).
$IPWhitelist	An array of IPs that should be ignored in security reports.

🚀 How to Use

1. Download the FileZillaLogAnalyzer.ps1 script.
2. Open the script and set your $logFolder path.
3. Right-click the file and select Run with PowerShell.
4. Run PowerShell as Administrator (Recommended). ///or/// Alternatively, ensure the user account executing the script has explicit Read permissions for the FileZilla log folder.
5. If you have execution policy restrictions, run this command in your terminal first:

   Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process

👨‍💻 Author

Lukas Pavelka 📧 Email: lukas.pavelka@gmail.com

📄 License This project is licensed under the MIT License - free for personal and commercial use.

📊 Sample Output

===========================================================
   FILEZILLA SERVER LOG ANALYZER - v28
   Author: Lukas Pavelka (lukas.pavelka@gmail.com)
===========================================================
Time Filter: Last 30 days
Logs Found:  5
-----------------------------------------------------------

[#] DATA TRANSFER SUMMARY
Total Managed Volume: 10406.87 MB
 -> 192.168.1.12    | 10406.87 MB
------------------------------------
[!] FAILED LOGINS (External Only)
IP Address      Attempts
----------      --------
84.0.116.35            5
...