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OpenNetAdmin
What it is
OpenNetAdmin is an open-source IP address management system for tracking network information and supporting repeatable configuration work. Its records can cover DNS names, IP addresses, subnets, MAC addresses, IPv6, VLANs, DHCP pools, NAT and custom attributes. Administrators can maintain the inventory through an AJAX-enabled web interface or use a command-line interface for scripts and bulk tasks. The project describes the inventory as a manually maintained authoritative source that can drive network configuration, with discovery tools helping 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, LDAP authentication, local authentication and user and group permissions. BIND-DLZ support lets BIND query the ONA database directly, and host actions can link to applications such as Splunk, Nagios, Cacti and Base. The core is licensed under GPLv2.0; some add-ons may have separate licenses. It is free and self-hosted, and installation requires a web server.
For and against
For
- Tracks IPv6, DNS, VLANs, DHCP pools and NAT.
- Web and command-line interfaces support different workflows.
- Templates can generate DNS, DHCP and router configurations.
- Configuration archives allow syntax-highlighted comparisons.
- Core is open source and free.
Against
- Requires self-hosting on a web server.
- Only MySQL is stated as tested.
- Puppet and MCollective integration are listed as in progress.
The verdict
OpenNetAdmin brings address inventory, network records and configuration generation together in a free, self-hosted system. Its manually maintained inventory model and the stated MySQL testing limit are relevant to deployment planning.
Who it suits
OpenNetAdmin suits network administrators in small or large organizations who need a self-managed inventory for address data and repeatable configuration tasks. It is most relevant to teams prepared to maintain the inventory and run the application on their own web server.
Plans and prices
OpenNetAdmin
Open-source IPAM system; no paid plans or usage limits stated
Read 9 Oct 2026 · github.com
On the record
- Authentication
- The feature page lists LDAP and local authentication backends, plus locally stored user and group permissions.opennetadmin.com · read 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 · read 8 Oct 2026
- Automation
- It can generate templated configurations and DNS and DHCP server configurations, including for distributed servers.opennetadmin.com · read 8 Oct 2026
- Configuration history
- Per-device configuration archives can store multiple entries and compare them with syntax-highlighted diffs.opennetadmin.com · read 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 · read 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 · read 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 · read 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 · read 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 · read 8 Oct 2026
- Interfaces
- It provides an AJAX web interface and a command-line interface for batch management and scripting.opennetadmin.com · read 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 · read 9 Oct 2026
- License
- The project repository says OpenNetAdmin is released under the GPLv2.0 license.github.com · read 9 Oct 2026
- Network automation
- Backend processes can build DHCP, DNS, and router configurations, while templates support configuration generation.opennetadmin.com · read 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 · read 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 · read 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 · read 8 Oct 2026
- Purpose
- OpenNetAdmin tracks IP network attributes, including subnets, hosts, IP addresses, MAC addresses, and DNS names.opennetadmin.com · read 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 · read 9 Oct 2026
