nftban

NFTBan — Adaptive Firewall for the Modern Linux Stack

Secure by Design | Zero Trust Ready | AI-Assisted Defense

NFTBan is an enterprise-grade firewall management system built on Linux nftables — combining atomic rule updates, privilege separation through Polkit, and AI-assisted threat intelligence for a resilient, self-healing network defense layer.

BETA TESTING | We are actively finding and fixing bugs. NOT production-ready yet. Tested on 5 lab servers. Community feedback needed from diverse environments. Report issues here.

Quick Install

Rocky / AlmaLinux / RHEL / CentOS Stream 9

sudo dnf install -y epel-release && sudo dnf config-manager --set-enabled crb
wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-el9-x86_64.rpm
sudo dnf install -y nftban-el9-x86_64.rpm && sudo nftban enable

Rocky / AlmaLinux / RHEL / CentOS Stream 10

sudo dnf install -y epel-release && sudo dnf config-manager --set-enabled crb
wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-el10-x86_64.rpm
sudo dnf install -y nftban-el10-x86_64.rpm && sudo nftban enable

Fedora 42

wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-fc42-x86_64.rpm
sudo dnf install -y nftban-fc42-x86_64.rpm && sudo nftban enable

Fedora 43

wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-fc43-x86_64.rpm
sudo dnf install -y nftban-fc43-x86_64.rpm && sudo nftban enable

Ubuntu 22.04

wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-ubuntu22.04-amd64.deb
sudo dpkg -i nftban-ubuntu22.04-amd64.deb && sudo apt-get install -f -y && sudo nftban enable

Ubuntu 24.04

wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-ubuntu24.04-amd64.deb
sudo dpkg -i nftban-ubuntu24.04-amd64.deb && sudo apt-get install -f -y && sudo nftban enable

Debian 12

wget https://github.com/itcmsgr/nftban/releases/latest/download/nftban-debian12-amd64.deb
sudo dpkg -i nftban-debian12-amd64.deb && sudo apt-get install -f -y && sudo nftban enable

From Source

git clone https://github.com/itcmsgr/nftban.git && cd nftban
sudo ./install.sh cli    # CLI-only (~50MB RAM)
# or
sudo ./install.sh gui    # Full with Web GUI (~200MB RAM)

Available Packages

RPM Packages (EL Family + Fedora)

DEB Packages (Ubuntu + Debian)

Packages are distro-specific and FHS compliant. Use the package matching your exact distribution version. Old versions archived in Releases.

Highlights

• 44 CLI Commands — Complete firewall management from command line
• Unified Go Backend — High-performance feeds, GeoIP, and sync operations
• Web Interface — Modern dashboard for visual management
• Dual-Table Architecture — Clean IPv4/IPv6 separation with ip nftban and ip6 nftban
• FHS Compliant — Follows Filesystem Hierarchy Standard
• Security Hardened — Systemd sandboxing, capability-based permissions

Core Features

Quick Start

# Verify installation
nftban version
nftban health summary

# Enable protection
nftban login enable      # SSH login monitoring
nftban feeds enable      # Threat intelligence feeds
nftban portscan enable   # Port scan detection

# Optional: Advanced IDS integration
nftban suricata install  # Install Suricata IDS (automated)
nftban suricata enable   # Enable with weekly rule updates

# Common tasks
nftban ban 1.2.3.4       # Block IP
nftban unban 1.2.3.4     # Remove ban
nftban search 1.2.3.4    # Search across all sets
nftban firewall reload   # Atomic reload (no downtime)

# Check status
nftban status

CLI Overview

System & Health

nftban status          # Quick system overview
nftban health          # System diagnostics with auto-heal
nftban validate        # Firewall structure validation
nftban services        # Systemd services status

IP Management

nftban ban <IP>        # Ban IP (with optional timeout)
nftban unban <IP>      # Remove ban
nftban search <IP>     # Search across all sets
nftban whitelist add   # Add to whitelist

Protection Modules

nftban login status    # SSH login monitoring
nftban feeds list      # Threat feed status
nftban geoban list     # Geographic blocking
nftban portscan status # Port scan detection
nftban ddos status     # DDoS protection

Testing

nftban smoke run       # Standard smoke test
nftban smoke all       # Comprehensive test (44 commands)

See CLI Commands Reference for complete documentation.

Architecture

ip nftban {                  # IPv4 rules
    set whitelist_ipv4 {...}
    set blacklist_ipv4 {...}
    set feeds_ipv4 {...}
    set geoban_ipv4 {...}
    chain input {...}
}

ip6 nftban {                 # IPv6 rules
    set whitelist_ipv6 {...}
    set blacklist_ipv6 {...}
    chain input {...}
}

Components

Requirements

• Linux: Rocky/Alma/RHEL 9-10, CentOS Stream 9-10, Ubuntu 22.04+, Debian 12+, Fedora 42+
• nftables: 0.9.3+
• Bash: 4.4+
• systemd: Required
• Go 1.21+: For building from source (optional)

AI-Assisted Development

NFTBan is developed through ethical AI collaboration combining human expertise with AI capabilities:

All AI-generated code is human-reviewed, version-controlled, and transparently attributed.

License

Mozilla Public License 2.0 (MPL-2.0)

Copyright (c) 2024-2026 NFTBan Project / Antonios Voulvoulis

Documentation

Getting Started

• Wiki Home - Complete documentation
• CLI Commands Reference - All 44 commands
• Installation Prerequisites - System requirements

Advanced Integration

• Suricata IDS Integration - Complete guide for Suricata IDS/IPS setup (2-command install, DDoS/portscan integration, performance tuning)

Security

• Security Policy - Vulnerability reporting
• Security Architecture - FHS Auto-Heal, Polkit integration
• Security Operations Guide - Hardening, monitoring, emergency procedures
• Groups and Permissions - Access control model

Community

• Website: https://nftban.com
• Report Bug - Issue tracker
• Discussions - Community forum

NFTBan - Simplifying Linux Firewall Management
nftban.com | Report Issue | Discussions