# OpenWrt — Open-Source Router Operating System

> Replace stock router firmware with OpenWrt for advanced networking, package management, and full control over your network infrastructure.

## Install

Save in your project root:

# OpenWrt — Open-Source Router Operating System

## Quick Use
```bash
# Download firmware for your device from openwrt.org
# Flash via vendor web UI or TFTP
# After boot, access LuCI web UI:
ssh root@192.168.1.1
opkg update
opkg install luci
```

## Introduction
OpenWrt is a Linux-based operating system for embedded networking devices. It replaces vendor firmware on routers, access points, and single-board computers with a fully writable filesystem and a package manager, turning commodity hardware into a configurable network appliance.

## What OpenWrt Does
- Provides a full Linux distribution optimized for routers and network devices
- Includes opkg package manager with thousands of available packages
- Supports advanced routing, firewalling, VPN, QoS, and mesh networking
- Offers LuCI web interface and UCI configuration system
- Targets 1,500+ hardware devices across multiple architectures

## Architecture Overview
OpenWrt builds on the Linux kernel with a custom build system that cross-compiles for MIPS, ARM, x86, and other architectures. The UCI (Unified Configuration Interface) abstracts device configuration into text files under /etc/config/. Procd manages services and init, while netifd handles network configuration. The build system generates flashable images tailored to each device profile.

## Self-Hosting & Configuration
- Download the correct firmware image for your specific hardware model from the table of hardware
- Flash via the existing vendor web UI, TFTP, or serial console
- Connect via SSH (default: root@192.168.1.1) or install LuCI for web management
- Configure WAN, LAN, Wi-Fi, and firewall zones through UCI or LuCI
- Install additional packages with opkg (VPN, adblocking, bandwidth monitoring, etc.)

## Key Features
- Full package manager (opkg) with 5,000+ available packages
- Firewall based on nftables with zone-based configuration
- Multi-WAN failover and load balancing out of the box
- WireGuard and OpenVPN support for site-to-site and remote access
- Mesh networking via 802.11s and batman-adv protocols

## Comparison with Similar Tools
- **DD-WRT** — Closed-source components and less frequent updates; OpenWrt is fully open with rapid release cycles
- **pfSense/OPNsense** — x86-focused full firewall distributions; OpenWrt targets embedded devices with constrained resources
- **Tomato** — Simpler UI but fewer features and narrower device support
- **Stock firmware** — Vendor-locked with limited configuration; OpenWrt provides full OS-level control

## FAQ
**Q: Will OpenWrt work on my router?**
A: Check the Table of Hardware on the OpenWrt wiki. Devices need sufficient flash (8 MB+) and RAM (64 MB+) for a usable install.

**Q: Can I brick my router flashing OpenWrt?**
A: Most devices have recovery methods (TFTP, serial console). Read the device-specific wiki page before flashing. A misconfigured network is recoverable via failsafe mode.

**Q: How do I update OpenWrt?**
A: Use sysupgrade from the command line or LuCI. Keep a list of installed packages, as upgrades replace the filesystem. Use the attended sysupgrade server to build images with your packages included.

**Q: Does OpenWrt support Wi-Fi 6/6E?**
A: Yes, with supported hardware using the mt76 or ath11k drivers. Check the specific chipset support status on the wiki.

## Sources
- https://github.com/openwrt/openwrt
- https://openwrt.org/docs/start

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Source: https://tokrepo.com/en/workflows/asset-402b5532
Author: AI Open Source