Jan AI: Complete Guide to Self-Hosting LLMs on Your Local Machine

TL;DR Jan AI is an open-source desktop application that lets you run large language models entirely on your local machine—no cloud dependencies, no data leaving your network. Think of it as a polished alternative to Ollama with a ChatGPT-like interface built in. What makes Jan different: Unlike command-line tools like llama.cpp or Ollama, Jan provides a complete GUI experience with conversation management, model switching, and system resource monitoring. It supports GGUF model formats and runs models from Llama 3.1, Mistral, Phi-3, and other popular families. ...

February 21, 2026 · 9 min · Local AI Ops

Securing Your Local Ollama API: Authentication and Network Isolation

TL;DR By default, Ollama exposes its API on localhost:11434 without authentication, making it vulnerable if your network perimeter is breached or if you expose it for remote access. This guide shows you how to lock down your local Ollama deployment using reverse proxies, API keys, and network isolation techniques. Quick wins: Place Nginx or Caddy in front of Ollama with basic auth, restrict API access to specific IP ranges using firewall rules, and run Ollama in a dedicated Docker network or systemd namespace. For multi-user environments, implement token-based authentication using a lightweight auth proxy like oauth2-proxy or Authelia. ...

February 21, 2026 · 8 min · Local AI Ops

Self-Hosting Open WebUI with Docker: Installation and Configuration

TL;DR Open WebUI is a self-hosted web interface for running local LLMs through Ollama, providing a ChatGPT-like experience without cloud dependencies. This guide walks you through Docker-based deployment, configuration, and integration with local models. What you’ll accomplish: Deploy Open WebUI in under 10 minutes using Docker Compose, connect it to Ollama for model inference, configure authentication, and set up persistent storage for chat history and model configurations. ...

February 21, 2026 · 7 min · Local AI Ops

How to Install and Run Ollama on Debian: Complete Setup Guide

TL;DR Ollama transforms your Debian system into a private AI inference server, letting you run models like Llama 3.1, Mistral, and Phi-3 locally without cloud dependencies. This guide walks you through installation, model deployment, API integration, and production hardening. Quick Install: curl -fsSL https://ollama.com/install.sh | sh sudo systemctl enable ollama ollama pull llama3.1:8b ollama run llama3.1:8b You’ll configure Ollama as a systemd service, expose its REST API on port 11434, and integrate it with Open WebUI for a ChatGPT-like interface. We cover GPU acceleration (NVIDIA/AMD), resource limits, and reverse proxy setup with Nginx for secure remote access. ...

February 21, 2026 · 8 min · Local AI Ops