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682 lines
24 KiB
Markdown
682 lines
24 KiB
Markdown
# Fail2Ban UI
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<div align="center">
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**Enterprise-Grade Intrusion Detection System Management Platform**
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[](https://www.gnu.org/licenses/gpl-3.0)
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[](https://golang.org/)
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[](https://www.linux.org/)
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*Swiss-made open-source solution for centralized Fail2Ban management across distributed infrastructure*
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[Features](#-features) • [Quick Start](#-quick-start) • [Documentation](#-documentation) • [Screenshots](#-screenshots) • [Security Notes](#-security-notes)
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</div>
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---
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## 🎯 Overview
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**Fail2Ban UI** is a production-ready, enterprise-grade web-based management platform to create a distributed Fail2Ban intrusion detection system. Designed for organizations managing single or multible fail2ban instances. It provides centralized ban-control, real-time monitoring and alerting across all servers.
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### Why we Need Fail2Ban UI
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Modern enterprises face increasing security challenges with generally distributed infrastructure, cloud deployments, and multi-location operations. Traditional Fail2Ban management requires a manual SSH access to individual servers, manual configuration changes, and lacks centralized visibility. **Fail2Ban UI solves these challenges** by providing:
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- **Centralized Management**: Control multible Fail2Ban instances from a single interface
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- **Real-Time Visibility**: Monitor ban / security events across your entire proxy / webserver infrastructure (also planned to ingest all via connector to SIEM)
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- **Operational Efficiency**: Reduce administrative overhead with automated workflows e.g. auto-banning for recurring IPs, directly on the firewall.
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**Developed by [Swissmakers GmbH](https://swissmakers.ch)** — Trusted by enterprises swisswide for mission-critical security infrastructure.
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---
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## 🚀 Current Features
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### 🏢 Multi-Server Management
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**Centralized Control Across Distributed Fail2Ban Instances**
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- **Unified Dashboard**: Monitor and manage multiple Fail2Ban servers from a single interface
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- **Flexible Connectivity**: Support for local, SSH, and API agent connections form Fail2Ban-UI to other Fail2Ban Instances
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- **Connection Testing**: Validate backend connectivity before activate them on the management UI
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**Use Cases:**
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- Multi-datacenter deployments with several reverse proxies
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- Hybrid cloud environments
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- Also integrate external Webservers
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### 📊 Real-Time Security Intelligence
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**Malicious Actor Visibility and Analytics**
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- **Live Event Monitoring**: Real-time ban events from all configured / connected servers
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- **Historical Analysis**: SQLite-based event storage with advanced querying
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- **Geographic Intelligence**: Country-based threat analysis and visualization (Will be later send to SIEM - planned)
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- **Recurring Threat Detection**: Identify persistent attackers across time windows
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- **Ban Insights Dashboard**: Aggregated statistics
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- **Event Correlation**: Track attack patterns across multiple servers and jails (planned with Elasticsearch)
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**Business Value:**
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- Faster threat response times
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- Proactive security posture management
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- Compliance reporting and audit trails
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### 🛡️ Advanced Ban Management
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**IP Blocking and Unblocking**
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- **Cross-Jail Search**: Find banned IPs across all active jails instantly
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- **Bulk Operations**: Manage multiple bans simultaneously
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- **Ban History**: Complete audit trail with timestamps, ban-reasons, and context like whois information of the attacker
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- **Whitelist Management**: Configure trusted IPs and networks
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- **Automatic Unban**: Time-based ban expiration with configurable policies
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- **Permanent Ban for Reccuring IPs**: Set a threshold in the Settings, after what amount of Bans a IP is automatically banned permanently on Firewall (Currently Supported Mikrotik/PFSense)
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### ⚙️ Configuration Management
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- **Remote Configuration**: Edit Fail2Ban jail and filter configurations remotely
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- **Jail Management**: Enable/disable jails across multiple servers
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- **Filter Testing**: Debug and validate filters using `fail2ban-regex` before enabeling
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- **Template Management**: Standardize configurations across server groups (planned)
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### 📧 Alerting
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**Security Notifications**
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- **Multi-Language Email Alerts**: Localized notifications in currently 5 supported languages
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- **Country-Based Filtering**: Alert only on threats from specific geographic regions to reduce alert fatigue
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- **SMTP Integration**: Support M365 Mail-Servers with STARTTLS
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- **Emai Templates**: Currentls features a Modern and classic email design (more to come)
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- **Alert Aggregation**: This feature is planned for the SIEM-modul
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### 🔐 Enterprise Security
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**Hardened for Production Environments**
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- **SELinux Support**: Full compatibility with SELinux-enabled systems and pre-created custom policies
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- **Container Security**: Secure containerized deployment with proper best-practisies
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- **Least Privilege**: Only minimal permissions are used using FACLs and special sudo-rules
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- **Audit Logging**: Comprehensive logging for compliance and forensics also in the future planned to ingest into a Elastic SIEM
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- **Encrypted Communications Only**: Secure data transmission for all remote operations will be enforced
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### 🌐 Internationalization
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- **Multi-Language UI**: English, German (DE/CH), French, Italian, Spanish
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- **Localized Content**: All user-facing content translated
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- **RTL Support Ready**: Architecture supports right-to-left languages
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- **Easy Extension**: Simple JSON-based translation system
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### 📱 Modern User Experience
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- **Responsive Design**: Full functionality also on mobile devices
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- **Progressive Web App**: Works also in a no-internet / offline and restricted environment with local CSS/JS builds only
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- **Fast Performance**: Go-based backend with minimal resource footprint
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---
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## 📸 Screenshots
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### Dashboard Overview
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The central command center for monitoring all Fail2Ban instances and security events.
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### Server Management
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Add, configure, and manage multiple Fail2Ban servers from the "Manage Servers" modal.
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### IP Search and Management
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Quickly locate and review / manage banned IPs across all jails and servers.
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### Unban Operations
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One-click unban action with confirmation dialog.
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### Configuration Editor
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Edit Fail2Ban jail and filter configurations (with syntax highlighting - planned) and validation.
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### Service Management
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Reload or restart Fail2Ban services when needed, with integrated change detection.
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### Filter Debugging
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Test and validate Fail2Ban filters using `fail2ban-regex`.
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### Settings and Configuration
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Comprehensive settings management for alerts, advanced banning, and system preferences.
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---
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## 🏗️ Architecture
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### System Components
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```
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┌────────────────────────────────────────────────────────────┐
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│ Fail2Ban UI Web Interface │
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│ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │
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│ │ Dashboard │ │ Management │ │ Settings │ │
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│ └──────────────┘ └──────────────┘ └──────────────┘ │
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└────────────────────────────────────────────────────────────┘
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│
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▼
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┌────────────────────────────────────────────────────────────────┐
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│ Go Backend API Server │
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│ ┌─────────────────────────────┐ ┌──────────────────────┐ │
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│ │ Fail2Ban UI (Backend) │--->│ Send Alerts via Mail │ │
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│ │ - Gin handlers + REST API │ │ (planned: Elastic) │ │
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│ │ - Vanilla JS + Tailwind UI │ └──────────────────────┘ │
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│ ->│ - SQLite storage │ │
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│ │ └──────────────┬──────────────┘ │
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│ │ │ │
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│ │ ┌──────────┴────────────┐ ┌─────────────────────┐ │
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│ │ │ Connector Manager and │-------│ Integrations │ │
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│ │ │ handlers / actions │ │ Mikrotik / pfSense │ │
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│ │ └────────────────────┬──┘ └─────────────────────┘ │
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│ │ │ │
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└─│───────────────────────────│──────────────────────────────────┘
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│ │
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│ ▼
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┌─│─────────────────────────────────────────────────────────────┐
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│ │ Connection to remote Server │
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│ │ ───────────────────────────── │
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│ │ │ │ │ │
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│ │ ▼ ▼ ▼ │
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│ │ ┌────────┐ ┌────────┐ ┌────────┐ │
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│ │ │ Local │ │ SSH │ │ API │ │
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│ │ │ Server │ │ Server │ │ Agent │ │
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│ │ └────────┘ └────────┘ └────────┘ │
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│ │ │ │ │ │
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│ │ │ │ │ │
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│ │ ┌─────┴─────────────┴─────────────┴─────┐ │
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│ │ │ Fail2Ban instances on Reverse Proxies │ │
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│ │ │ or remote / local Webserver │ │
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│ │ └─────────────┬─────────────────────────┘ │
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│ │ │ │
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│ │ ┌──────────┴────────────┐ │
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│ │ │ Report Alerts back to │ │
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│ <----------│ Fail2Ban-UI REST with │ │
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│ │ custom action │ │
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│ └───────────────────────┘ │
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└───────────────────────────────────────────────────────────────┘
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```
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### Technology Stack
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- **Backend**: Go 1.21+ (Golang)
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- **Frontend**: Vanilla JavaScript, Tailwind CSS
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- **Database**: SQLite (embedded)
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- **Container Runtime**: Podman/Docker compatible
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- **Service Management**: systemd
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- **Security**: SELinux compatible
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---
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## 🚀 Quick Start
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### Prerequisites
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- **Operating System**: Linux (RHEL 8+, Ubuntu 20.04+, Debian 11+, or containerized)
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- **Fail2Ban**: At least version 0.10+ installed and configured
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- **Go**: Version 1.21+ (only for source builds)
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- **Node.js**: Version 16+ (for Tailwind CSS builds)
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- **Permissions**: Root access to configure FACL and sudo-rules and Fail2Ban socket access
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### Installation Methods
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#### Method 1: Container Deployment (Recommended for Production)
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**Pull the official image:**
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```bash
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podman pull registry.swissmakers.ch/infra/fail2ban-ui:latest
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```
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**Run the container:**
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```bash
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podman run -d \
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--name fail2ban-ui \
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--network=host \
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-v /opt/podman-fail2ban-ui:/config:Z \
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-v /etc/fail2ban:/etc/fail2ban:Z \
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-v /var/log:/var/log:ro \
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-v /var/run/fail2ban:/var/run/fail2ban \
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-v /usr/share/GeoIP:/usr/share/GeoIP:ro \
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registry.swissmakers.ch/infra/fail2ban-ui:latest
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```
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**📖 [Complete Container Deployment Guide](./deployment/container/README.md)**
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#### Method 2: Systemd Service (Standalone)
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**Clone and build:**
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```bash
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git clone https://github.com/swissmakers/fail2ban-ui.git /opt/fail2ban-ui
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cd /opt/fail2ban-ui
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# Build Tailwind CSS (optional, for offline use)
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./build-tailwind.sh
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# Build Go application
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go build -o fail2ban-ui ./cmd/server/main.go
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```
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**📖 [Complete Systemd Setup Guide](./deployment/systemd/README.md)**
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### First Launch
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1. **Access the Web Interface**
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- Navigate to `http://localhost:8080` (or your configured port)
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- Default port: `8080` (configurable in settings)
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2. **Add Your First Server**
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- **Local Server**: Enable the local connector if Fail2Ban runs on the same host
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- **Remote Server**: Add via SSH or API agent connection
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3. **Configure Settings**
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- Set up email alerts (optional)
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- Configure language preferences
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- Adjust security settings
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---
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## 📚 Documentation
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### Deployment Guides
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- **[Container Deployment](./deployment/container/README.md)**: Complete guide for containerized deployments
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- **[Systemd Service Setup](./deployment/systemd/README.md)**: Standalone installation and service configuration
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- **[SELinux Configuration](./deployment/container/SELinux/)**: Security policies for SELinux-enabled systems
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### Configuration
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#### Adding a Local Server
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The local connector allows managing Fail2Ban on the same host where Fail2Ban UI runs.
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**Requirements:**
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- Fail2Ban installed and running
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- Special FACL Rules and passwordless sudo to `/usr/bin/fail2ban-client`
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- Socket access: `/var/run/fail2ban/fail2ban.sock`
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**Enable in UI:**
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1. Navigate to **Settings** → **Manage Servers**
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2. Enable **Local Connector**
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3. Test connection to verify access
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#### Adding an SSH Server
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Connect to remote Fail2Ban instances via SSH for centralized management.
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**Prerequisites:**
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- SSH key-based authentication (passwordless login)
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- Network connectivity from UI host to remote server
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- Service account with appropriate permissions
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**Recommended Service Account Setup:**
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```bash
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# Create dedicated service account
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sudo useradd -r -s /bin/bash sa_fail2ban
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# Configure sudoers for Fail2Ban operations
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sudo visudo -f /etc/sudoers.d/fail2ban-ui
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```
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Add the following sudoers configuration:
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```
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sa_fail2ban ALL=(ALL) NOPASSWD: /usr/bin/fail2ban-client *
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sa_fail2ban ALL=(ALL) NOPASSWD: /usr/bin/systemctl restart fail2ban
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```
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**Set file system ACLs:**
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```bash
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# Grant read/write access to Fail2Ban configuration directory
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sudo setfacl -Rm u:sa_fail2ban:rwX /etc/fail2ban
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sudo setfacl -dRm u:sa_fail2ban:rwX /etc/fail2ban
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```
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**Add Server in UI:**
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1. Navigate to **Settings** → **Manage Servers**
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2. Click **Add Server**
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3. Select **SSH** connection type
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4. Configure:
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- **Name**: Descriptive server identifier
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- **Host**: IP address or hostname
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- **Port**: SSH port (default: 22)
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- **SSH User**: Service account username
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- **SSH Key**: Select from `~/.ssh/` directory
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5. Click **Test Connection** to verify
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6. Save configuration
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**Security Benefits:**
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- Least privilege access model
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- No full sudo access required
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- Fine-grained file system permissions
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- Audit trail via sudo logs
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---
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### 🔒 Security Notes
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#### Network Security Best Practices
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- **Reverse Proxy**: Use nginx or Apache as reverse proxy with SSL/TLS termination to secure the Fail2ban-UI
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- **VPN Access**: Require VPN connection for access to Fail2Banu-UI only
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- **IP Whitelisting**: Restrict access to specific IPs / ranges e.g. internal IT
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#### Authentication and Authorization
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- **SSH Key Management**: Use strong SSH keys like 4096-bit RSA or even better Ed25519. When using RSA no smaler bit size please.
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- **Service Accounts**: Use dedicated service accounts, not personal accounts
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- **Sudoers Configuration**: Minimal sudo permissions, no passwordless full sudo
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#### Data Protection
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- **Database Permissions**: Restrict SQLite database file permissions (600)
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- **Log Files**: Secure log file access and don't forget to setup a rotation
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- **Backup Encryption**: It's always a good idea, to encrypt backups of configuration and database files
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#### SELinux Configuration
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For SELinux-enabled systems, apply the required policies:
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```bash
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# Basic rule to allow Fail2Ban to access the UI API
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semodule -i fail2ban-curl-allow.pp
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# Container deployment policies
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semodule -i fail2ban-container-ui.pp
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semodule -i fail2ban-container-client.pp
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```
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**📖 [SELinux Policies Documentation](./deployment/container/SELinux/)**
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---
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### 🗄️ Database Notes
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#### SQLite Database Schema
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Fail2Ban UI uses an embedded SQLite database (`fail2ban-ui.db`) for persistent storage:
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**Tables:**
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- **`servers`**: Server configurations (local, SSH, API agent)
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- **`app_settings`**: Application preferences and settings of Fail2Ban-UI
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- **`ban_events`**: Historical ban records with full context
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- **`permanent_blocks`**: Permanent block records for integrations
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**Data Retention:**
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- Ban events are stored indefinitely (configurable)
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- Automatic database migrations on version updates
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- Backup recommended before major updates
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---
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### 🌍 Internationalization Notes
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#### Currently Supported Languages
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- **English** (en) - Default
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- **German** (de, de_CH) - Standard and Swiss variants
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- **French** (fr)
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- **Italian** (it)
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- **Spanish** (es)
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#### Adding New Languages
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1. Create translation file: `internal/locales/{language_code}.json`
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2. Copy structure from `internal/locales/en.json`
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3. Translate all key-value pairs
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4. Test in UI: **Settings** → **Language** → Select new language
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**Translation File Structure:**
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```json
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{
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"page.title": "Fail2ban UI Dashboard",
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"nav.dashboard": "Dashboard",
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"nav.settings": "Settings",
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...
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}
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```
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---
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### 📊 API Reference
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Fail2Ban UI provides a RESTful API for programmatic access:
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#### Endpoints
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**Server Management:**
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- `GET /api/servers` - List all configured servers
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- `POST /api/servers` - Add or update server
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- `DELETE /api/servers/:id` - Remove server
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- `POST /api/servers/:id/test` - Test server connection
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**Jail Management:**
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- `GET /api/summary` - Get summary of all jails
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- `POST /api/jails/:jail/unban/:ip` - Unban IP address
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- `GET /api/jails/manage` - List jail management status
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- `POST /api/jails/manage` - Update jail enabled states
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**Configuration:**
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- `GET /api/jails/:jail/config` - Get jail/filter configuration
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- `POST /api/jails/:jail/config` - Update jail/filter configuration
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**Events and Analytics:**
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- `GET /api/events/bans` - List ban events
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- `GET /api/events/bans/stats` - Get ban statistics
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- `GET /api/events/bans/insights` - Get ban insights and analytics
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**Settings:**
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- `GET /api/settings` - Get application settings
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- `POST /api/settings` - Update application settings
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- `POST /api/settings/test-email` - Test email configuration
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**Filter Debugging:**
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- `GET /api/filters` - List available filters
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- `POST /api/filters/test` - Test filter against log lines
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**Service Control:**
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- `POST /api/fail2ban/restart` - Restart Fail2Ban service
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**Notifications:**
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- `POST /api/ban` - Receive ban notification from Fail2Ban
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---
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## 🛠️ Troubleshooting
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### Common Issues
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#### UI Not Accessible
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**Symptoms:** Cannot access web interface
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**Solution / Check:**
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```bash
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# Check if service is running
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systemctl status fail2ban-ui
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# Check firewall rules
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sudo firewall-cmd --list-ports
|
|
sudo firewall-cmd --add-port=8080/tcp --permanent
|
|
sudo firewall-cmd --reload
|
|
|
|
# Check logs
|
|
journalctl -u fail2ban-ui.service -f
|
|
```
|
|
|
|
#### No Servers Configured
|
|
|
|
**Symptoms:** Empty dashboard, no servers visible
|
|
|
|
**Solution / Check:**
|
|
1. Navigate to **Settings** → **Manage Servers**
|
|
2. Enable **Local Connector** (if Fail2Ban runs locally)
|
|
3. Add remote server via SSH or API agent
|
|
4. Verify server connection status
|
|
|
|
#### SSH Connection Issues
|
|
|
|
**Symptoms:** Cannot connect to remote server
|
|
|
|
**Solution / Check:**
|
|
```bash
|
|
# Test SSH connection manually
|
|
ssh -i ~/.ssh/your_key user@remote-host
|
|
|
|
# Verify SSH user permissions
|
|
sudo -l -U sa_fail2ban
|
|
|
|
# Check ACLs on /etc/fail2ban
|
|
getfacl /etc/fail2ban
|
|
|
|
# Enable debug mode in UI settings for detailed error messages
|
|
```
|
|
|
|
#### Local Connector Not Working
|
|
|
|
**Symptoms:** Local server shows as disconnected
|
|
|
|
**Solution / Check:**
|
|
```bash
|
|
# Verify Fail2Ban is running
|
|
sudo systemctl status fail2ban
|
|
|
|
# Check socket permissions
|
|
ls -la /var/run/fail2ban/fail2ban.sock
|
|
|
|
# Verify UI has access (runs as root or has sudo permissions)
|
|
sudo fail2ban-client status
|
|
```
|
|
|
|
#### Database Errors
|
|
|
|
**Symptoms:** Database-related errors in logs
|
|
|
|
**Solution / Check:**
|
|
```bash
|
|
# Check database file permissions
|
|
ls -la /opt/fail2ban-ui/fail2ban-ui.db
|
|
|
|
# Verify database integrity
|
|
sqlite3 /opt/fail2ban-ui/fail2ban-ui.db "PRAGMA integrity_check;"
|
|
|
|
# Backup and recreate if corrupted
|
|
cp fail2ban-ui.db fail2ban-ui.db.backup
|
|
```
|
|
|
|
---
|
|
|
|
## 🤝 Contributing
|
|
|
|
We welcome contributions from the community! Whether it's bug fixes, feature enhancements, or documentation improvements, your contributions help make Fail2Ban UI better for everyone.
|
|
|
|
### How to Contribute
|
|
|
|
1. **Fork the Repository**
|
|
```bash
|
|
git clone https://github.com/swissmakers/fail2ban-ui.git
|
|
cd fail2ban-ui
|
|
```
|
|
|
|
2. **Create a Feature Branch**
|
|
```bash
|
|
git checkout -b feature/your-feature-name
|
|
```
|
|
|
|
3. **Make Your Changes**
|
|
- Follow Go coding standards
|
|
- Add tests for new features
|
|
- Update documentation as needed
|
|
|
|
4. **Commit Your Changes**
|
|
```bash
|
|
git commit -m "Add: Description of your feature"
|
|
```
|
|
|
|
5. **Push and Create Pull Request**
|
|
```bash
|
|
git push origin feature/your-feature-name
|
|
```
|
|
|
|
### Contribution Guidelines
|
|
|
|
- **Code Style**: Follow Go standard formatting (`gofmt`)
|
|
- **Testing**: Test your changes thoroughly
|
|
- **Documentation**: Update README and inline documentation
|
|
- **Commit Messages**: Use clear, descriptive commit messages
|
|
- **Pull Requests**: Provide detailed description of changes
|
|
|
|
---
|
|
|
|
## 📜 License
|
|
|
|
Fail2Ban UI is licensed under the **GNU General Public License v3.0 (GPL-3.0)**.
|
|
|
|
This means:
|
|
- ✅ **Free to use** in commercial and non-commercial projects
|
|
- ✅ **Free to modify** and distribute
|
|
- ✅ **Source code available** for inspection and auditing
|
|
- ⚠️ **Copyleft**: Modifications must be released under the same license
|
|
|
|
**Full License Text:** [LICENSE](./LICENSE)
|
|
|
|
---
|
|
|
|
## 🏢 Enterprise Support
|
|
|
|
### Professional Services
|
|
|
|
**Swissmakers GmbH** offers professional services for Fail2Ban UI:
|
|
|
|
- **Enterprise Deployment**: Custom deployment and configuration
|
|
- **Training and Support**: On-site or remote training sessions
|
|
- **Custom Development**: Feature development and integrations
|
|
- **Security Audits**: Security assessment and hardening
|
|
|
|
**Contact:** [https://swissmakers.ch](https://swissmakers.ch)
|
|
|
|
### Community Support
|
|
|
|
- **GitHub Issues**: [Report bugs and request features](https://github.com/swissmakers/fail2ban-ui/issues)
|
|
- **Documentation**: Comprehensive guides and API reference
|
|
- **Community**: Join discussions and share experiences
|
|
|
|
---
|
|
|
|
## 🙏 Acknowledgments
|
|
|
|
Fail2Ban UI is built on the foundation of the excellent [Fail2Ban](https://www.fail2ban.org/) project and the open-source community.
|
|
|
|
**Special Thanks:**
|
|
- Fail2Ban developers and contributors
|
|
- Go community and ecosystem
|
|
- All contributors and users of Fail2Ban UI
|
|
|
|
---
|
|
|
|
<div align="center">
|
|
|
|
**Fail2Ban UI** — *Enterprise-Grade Intrusion Detection System Management*
|
|
|
|
</div> |