RoamSwitch
by Lafine Systems Design
- Products ▾
- Docs ▾
- Manuals ▾
- Legal & Policies ▾
- Support ▾
Lafine Systems Design provides software design and contract development, from low-level systems programming centered on Linux, network security, and distributed data analysis, to native macOS (Apple Silicon) development.
We present implementation examples, from deep control of Linux systems and distributed infrastructure to native macOS integration.
Centered on Linux (nftables / iptables / systemd), and also supporting macOS (pf / SMAppService / launchd). Using network namespaces, socket communication, and inter-process communication (IPC), we build low-latency, high-throughput systems.
On Linux servers and Mac devices, we design passive auditing of unauthorized port exposure (0.0.0.0 binds), real-time monitoring of ARP spoofing (man-in-the-middle attacks), log analysis for intrusion detection, integration with antivirus such as ClamAV, and countermeasures against container port bypass.
On a high-performance Linux backend, we implement a fast collection and aggregation platform for time-series and multivariate data, plus statistical analysis and machine-learning inference engines. With multithreaded distributed processing using Redis / PostgreSQL, we process data streams on the scale of millions of records in real time.
We handle the secure design of Docker / Podman container platforms, optimization of the network stack by tuning Linux kernel parameters (sysctl), and resource isolation and high-availability configurations with cgroups / namespaces.
Using SwiftUI / Swift Concurrency, we design and develop Mac client apps that follow the Apple HIG, such as macOS menu bar tools that work together with Linux backends and daemons.
In Go / Rust / Python / Node.js, we build fast gRPC / REST / WebSocket API servers. We also implement encrypted communication that securely connects Linux servers and each client.
Three foundational pillars that guide every system architecture decision.
A robust design with least privilege that does not rely too heavily on root privileges, proper separation of packet filters, and elimination of unauthorized external access and vulnerabilities.
Optimizing CPU and memory efficiency by making the most of kernel features, asynchronous I/O, and event-driven design.
Reliability that combines the strengths of Linux servers and macOS clients, delivering both 24/7 continuous operation and easy-to-understand operation.
RoamSwitchKit (SDK) is free and open source. If you use it together with an installed RoamSwitch, you can start right away. If you want to bundle and redistribute RoamSwitch itself with your own product, we propose individual terms to fit your scale, such as per-unit OEM, an annual site license, or usage-based billing by number of active devices.
| Item | Example Terms |
|---|---|
| Billing unit | A partner-dedicated license pool is issued, billed monthly by the number of activated devices linked to it |
| Reference rate | Roughly 20–25% of the $19.99 retail price — about $0.3–0.5 per device/month, or $4–5 per device on a one-time basis. |
| Minimum guarantee | From $500/month. |
* The above are examples of general terms. They will be adjusted individually to fit your scale and requirements.
“I want to develop a security foundation or tools on Linux,” “I want to build a macOS app that works with a Linux backend,” and so on. Feel free to consult us from the idea stage.
✉️ Open Inquiry Form