Security Standard Windows security practices apply. Ensure the host PC is patched, uses least-privilege accounts, and is placed on properly segmented networks. When exposing gateways, configure authentication and firewall rules to limit access.

| Feature | RSLinx Classic Lite (Free) | RSLinx Classic Professional (Paid) | | :--- | :--- | :--- | | | No | Yes | | RSWho (Network Browser) | Limited | Full | | Simultaneous Drivers | 1 | Unlimited | | Support for DH+, DH‑485, ControlNet | No | Yes | | Programming Logic | Yes (simple upload/download) | Yes + advanced diagnostics | | Licensing Flexibility | Free, no license needed | Node‑locked or Concurrent (Floating) |