OpenNetAdmin

Free plan APILinuxSelf-hostedWeb

What OpenNetAdmin is

OpenNetAdmin is a self-hosted IP address management system for maintaining network records and generating repeatable configurations. Its inventory can include IP addresses, subnets, DNS names, MAC addresses, IPv6, VLANs, DHCP pools, NAT, and custom attributes. Administrators can work through an AJAX-enabled web interface or a command-line interface for scripting and bulk tasks. The project describes the inventory as manually maintained and authoritative, with discovery tools available to help populate and audit it. Templates and backend processes can generate DNS, DHCP, and router configurations, including for distributed servers. Other features include overlapping DNS views, configuration archives with syntax-highlighted comparisons, local user and group rights, LDAP authentication, and plugins. BIND-DLZ can query the ONA database directly, and host actions can link to applications such as Splunk, Nagios, Cacti, and Base. OpenNetAdmin is free and open source; its core is under GPLv2.0, while some modules or plugins may have different licenses. The project says only MySQL is tested among its database backends. Its README notes a recent update for compatibility with newer PHP, MySQL, and operating system versions, but little else fundamentally changed.

Who it suits

It suits small or large organizations that need to track network changes and automate recurring configuration work. It is intended for teams willing to maintain an authoritative inventory on their own web server.

What it does well

Tracks IPv6, DNS, DHCP, VLAN, and NAT records
Offers web and command-line interfaces
Generates DNS, DHCP, and router configurations
Archives device configurations with syntax-highlighted comparisons
Core is free under GPLv2.0

What to know first

Only MySQL is listed as tested
Some modules or plugins may use separate licenses
Several integrations and discovery tools remain in progress
Requires installation on a web server

Plans

Plan	Billed and limits	Price
OpenNetAdmin	Open-source IPAM system; no paid plans or usage limits stated	Free

As opennetadmin.com lists them, read 9 Oct 2026. The maker's own page has the final word.

Getting started

Open the OpenNetAdmin website and go to its download page.
Choose the current release, a tagged release, or an add-on.
Install OpenNetAdmin on a web server.
Use the web interface or command-line interface to manage network records.

Verdict

OpenNetAdmin combines network inventory, configuration generation, and change archives in a self-hosted IPAM system. The project expects a manually maintained authoritative inventory, and its stated database testing is limited to MySQL.

Questions

Is OpenNetAdmin free?

Yes. The listed plan is free, and the project describes the system as open source. The core is released under GPLv2.0; some additional modules or plugins may have separate licenses.

Where can I run OpenNetAdmin?

It is self-hosted and the project README instructs users to install it on a web server. Its listed platforms include API, Linux, self-hosted, and web.

Can it manage IPv6, DNS, and DHCP?

Yes. It supports IPv6 addressing, DNS records, and DHCP pools, and it can generate DNS and DHCP server configurations.

Does OpenNetAdmin have a command-line interface?

Yes. The command-line interface supports scripting and bulk work, alongside the AJAX-enabled web interface.

Which database backends does it support?

The features page says its ADODB abstraction layer can use many database backends, but only MySQL is listed as tested.

Where can users get help?

The project directs users to GitHub issues for questions and problem reports, and provides documentation for the system and add-on tools.

Facts from OpenNetAdmin's own pages

Authentication: The feature page lists LDAP and local authentication backends, plus locally stored user and group permissions. · opennetadmin.com, 9 Oct 2026
Authoritative inventory: The maker says ONA is intended to be manually maintained as an authoritative source that drives network configuration, with discovery tools helping populate and audit its data. · opennetadmin.com, 8 Oct 2026
Automation: It can generate templated configurations and DNS and DHCP server configurations, including for distributed servers. · opennetadmin.com, 8 Oct 2026
Configuration history: Per-device configuration archives can store multiple entries and compare them with syntax-highlighted diffs. · opennetadmin.com, 9 Oct 2026
Database support: The site describes an ADODB abstraction layer for multiple database backends and says only MySQL has been tested. · opennetadmin.com, 9 Oct 2026
Deployment: The download page offers the current release, tagged releases, and add-ons; the project README instructs users to install it on a web server. · opennetadmin.com, 9 Oct 2026
Development status: The project README says a recent update addressed incompatibilities with newer PHP, MySQL, and operating system versions, while noting that little else fundamentally changed. · github.com, 8 Oct 2026
Integrations: User-defined host action links can connect records to tools such as Splunk, Nagios, Cacti, and Base; the page describes Puppet and MCollective integration as in progress. · opennetadmin.com, 9 Oct 2026
Intended users: The maker describes use in small and large organizations that need to track network changes and automate repeatable configurations. · opennetadmin.com, 8 Oct 2026
Interfaces: It provides an AJAX web interface and a command-line interface for batch management and scripting. · opennetadmin.com, 9 Oct 2026
IPv6 and DNS: Features include IPv6 addressing and DNS records such as A, CNAME, PTR, NS, MX, TXT, and SRV. · opennetadmin.com, 9 Oct 2026
License: The project repository says OpenNetAdmin is released under the GPLv2.0 license. · github.com, 9 Oct 2026
Network automation: Backend processes can build DHCP, DNS, and router configurations, while templates support configuration generation. · opennetadmin.com, 9 Oct 2026
Network records: The feature list includes IPv6 addressing, DNS records, overlapping DNS views, VLANs, DHCP pools, NAT tracking, and custom attributes. · opennetadmin.com, 8 Oct 2026
Notable limits: The site lists Puppet and MCollective integration, continuing DNS and DHCP configuration work, and several discovery tools as in progress. · opennetadmin.com, 9 Oct 2026
Plugins and authentication: A plugin framework supports extensions and authentication backends; the listed available backends are LDAP and local authentication. · opennetadmin.com, 8 Oct 2026
Purpose: OpenNetAdmin tracks IP network attributes, including subnets, hosts, IP addresses, MAC addresses, and DNS names. · opennetadmin.com, 9 Oct 2026
Scale example: The feature page reports a deployment handling 40,000+ subnets, 670,000+ hosts, and 721,000+ IP interfaces on a 400 MHz PPC server with 2 GB of memory. · opennetadmin.com, 9 Oct 2026
Security and access: The feature list describes local user and group authorization with configurable group rights, as well as LDAP authentication support. · opennetadmin.com, 8 Oct 2026
Support: The community page directs users to GitHub issues for questions and problem reports and provides documentation links. · opennetadmin.com, 9 Oct 2026
Web and CLI: It provides a centralized AJAX-enabled web interface and a command-line interface for scripting and bulk work. · opennetadmin.com, 8 Oct 2026

Where OpenNetAdmin stands on Freedom251

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