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pfSense Dynamic Networks Alias Introduction
Dynamic Networks Alias (Auto Alias) is a native pfSense package that automatically combines IPv4 and IPv6 networks from multiple interfaces into stable, administrator-defined firewall aliases.
Multiple interfaces. One alias. Always aligned with your network configuration.
Managing firewall rules across multiple interfaces can become unnecessarily complicated, especially when IPv6 prefixes change dynamically.
Static network aliases require manual maintenance, while interface groups are not always the right solution when the goal is simply to combine network objects.
Auto Alias addresses this problem by keeping native pfSense network aliases synchronized with the actual interface networks.
- Automatic Network Discovery – Collect active IPv4 networks, IPv6 Global Unicast (GUA), and Unique Local Address (ULA) prefixes.
- Multi-Interface Aggregation – Combine networks from two or more interfaces into a single alias.
- Flexible Address Selection – Include IPv4, IPv6 GUA, IPv6 ULA, or supported combinations.
- Dynamic Updates – Automatically refresh aliases when interface addresses or delegated prefixes change.
- Native pfSense Integration – Use standard network aliases in existing firewall and NAT rules.
- No Unnecessary Interface Groups – Aggregate network objects without introducing additional interface groups.
- Safety by Design – Protect unrelated aliases, preserve rule references, and avoid unnecessary filter reloads.
Auto Alias follows the native pfSense package architecture and leaves firewall and NAT rule management entirely under administrator control.
Whether your network uses static addressing, dynamic IPv4, or changing IPv6 delegations, Auto Alias helps keep network definitions consistent without repetitive manual updates.
Current release: Version 1.0.0 for pfSense CE 2.9.0
The release provides guarded migration from interface groups and automatic refresh after native interface address and prefix events.
See the User Guide for installation, alias configuration, address-family selection, interface-group migration, and operational details.
Feedback, testing, and technical contributions are welcome.