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NetDefense

The CLI-first management platform for decentralized firewalls. Control fleets of OPNsense devices and automate routine tasks from a unified command line.

NetDefense is central management for OPNsense firewall fleets. A lightweight agent (NDAgent) runs on each firewall and connects outbound only โ€” no listening ports, no VPN tunnel needed for management โ€” and every command it accepts is Ed25519-signed by the control plane rather than relying on TLS alone as the trust boundary.

Operators run the fleet from NDCLI, an open-source command-line tool that also acts as an MCP server, so Claude, GPT, or other MCP-compatible agents can audit configurations, flag anomalies, and run fleet-wide tasks in natural language. There's also a web dashboard (NDWeb) for point-and-click management.

Features include reusable, inheritable configuration templates applied across hundreds of devices, one-command WireGuard mesh networking between sites, scheduled backups to S3-compatible storage, and CLI/REST hooks for GitHub Actions or GitLab CI.

NDAgent and NDCLI are open source (Apache-2.0): https://github.com/netdefense-io โ€” the control plane is SaaS, with a free tier and an Enterprise on-premise option.

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  • Web
  • MacOS
  • Linux
  • Windows
  • FreeBSD
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NetDefense

NetDefense Reviews and Details

This page is designed to help you find out whether NetDefense is good and if it is the right choice for you.

#IT Management #Cyber Security #Monitoring Tools #Firewall

Screenshots and images

  • NetDefense
    Image date //
    2026-07-24

Features & Specs

  1. Outbound-only agent

    On-firewall agent (NDAgent) connects out over TLS โ€” no listening ports, VPNs, or port-forwards on the firewall

  2. Cryptographically signed commands

    Every command is Ed25519-signed by the control plane; the agent rejects unsigned, altered, or replayed commands

  3. Open-source agent & CLI

    NDAgent and NDCLI are Apache-2.0 open source โ€” audit the exact code that runs on your firewalls

  4. AI assistant integration (MCP)

    NDCLI doubles as an MCP server so Claude, GPT, and other MCP-compatible agents can run fleet operations

  5. Configuration templates

    Reusable, inheritable configuration templates applied across hundreds of devices

  6. WireGuard mesh networking

    One-command WireGuard mesh between sites

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  • Public traffic stats of NetDefense

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  • Domain Rating (DR)

    Check the "Domain Rating" of NetDefense on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of NetDefense's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.

  • Domain Authority (DA)

    Check the "Domain Authority" of NetDefense on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.

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Is NetDefense good? This is an informative page that will help you find out. Moreover, you can review and discuss NetDefense here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.

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