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Arno's IPTABLES Firewall

Free plan LinuxSelf-hosted

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Arno's IPTABLES Firewall's own site

Plans

PlanBilled and limitsPrice
Arno's IPTABLES FirewallGPLv2 software · no warranty statedFree

As github.com lists them, read 8 Oct 2026. The maker's own page has the final word.

Facts from Arno's IPTABLES Firewall's own pages

Application rules
No · github.com, 23 Sept 2026
Central management
No · github.com, 23 Sept 2026
Dependencies
The README lists iptables, iproute, and a POSIX-compliant /bin/sh among the requirements. · github.com, 8 Oct 2026
Free plan
Yes · github.com, 23 Sept 2026
Installation
The project includes an install script and describes deployment on a Linux system. · github.com, 8 Oct 2026
IPv6
It supports mixed IPv4 and IPv6 operation, enabled with IPV6_SUPPORT=1 in the configuration. · github.com, 8 Oct 2026
License and warranty
The project identifies itself as GPL version 2 software and says it is provided without warranty. · github.com, 8 Oct 2026
Logging
The package includes arno-fwfilter, a pipe filter script for making firewall logs more readable. · github.com, 8 Oct 2026
Multi-routing
It supports multi-routing or load balancing, optionally with NAT, and the README says this requires static external IP addresses. · github.com, 8 Oct 2026
NAT
It supports NAT masquerading and configurable TCP port forwarding. · github.com, 8 Oct 2026
Outbound control
advanced · github.com, 23 Sept 2026
Supported platforms
Linux · github.com, 23 Sept 2026
Plugins
The firewall supports plugins for added functionality, and plugin configuration is disabled by default until ENABLED=1 is set. · github.com, 8 Oct 2026
Purpose
AIF is a single- and multi-homed firewall script with DSL/ADSL support. · github.com, 8 Oct 2026
Rule direction
both · github.com, 23 Sept 2026
Security defaults
The README says various security features are enabled by default to protect against hostile attacks. · github.com, 8 Oct 2026
Security guidance
The author warns that changing expert security settings without understanding them can significantly affect machine security. · github.com, 8 Oct 2026
Support
The author says they do not provide end-user support by email and directs bug reports to GitHub and other questions to community sites or the FAQ. · github.com, 8 Oct 2026
Traffic filtering
The firewall blocks all incoming traffic by default, and users configure allowed ports in its settings. · github.com, 8 Oct 2026

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