Open Wrt - Features

Features

The features include:

  • A writable root file system, enabling users to add, remove or modify any file. This is accomplished by using overlayfs to overlay a read-only compressed SquashFS file system with a writable JFFS2 file system in a copy-on-write fashion.
  • Flash wear leveling using JFFS2.
  • The package manager opkg, similar to dpkg or pacman, which enables users to install and remove software. This contrasts with Linux-based firmware based on read-only file systems that offer efficient compression but no way to modify the installed software without rebuilding and flashing a complete firmware image.
  • A package repository containing about 2,000 packages, chiefly ones suited for an environment with limited resources.
  • Sysupgrade, preserving selected configuration files on firmware upgrade.
  • a set of scripts called UCI (unified configuration interface) intended to unify and simplify the configuration of the entire system
  • extensible configuration of your network involving VLAN with exhaustive possibilities to configure the routing itself
  • customizable methods to filter, manipulate, delay and rearrange network packets:
    • Firewall
    • Port Forwarding of external traffic to computers behind NAT inside the LAN
    • Quality of Service for simultaneous use of applications such as VoIP, online gaming, and streaming media
    • Active queue management (AQM) with many available packet schedulers. CoDel has been backported to Kernel 3.3
    • Traffic shaping to ensure fair distribution of bandwidth among users
    • Load balancing for use with multiple ISPs
    • IP tunneling
    • Realtime network monitoring and statistics
  • Static DHCP leases
  • UPnP and NAT-PMP for dynamically configured port forwarding
  • Use of Dynamic DNS services to maintain a fixed domain name with an ISP that does not provide a static IP address
  • On devices with USB ports only:
    • 3G modem support
    • Printer sharing
    • Windows-compatible file sharing (via SAMBA)
    • File sharing via NFS and FTP
    • Audio/Video streaming via DLNA/UPnP AV
    • iTunes (DAAP) server
    • Webcam streaming
    • USB audio
  • An extensive Ajax-enabled web interface, thanks to the LuCI project
  • Configuration of the device as a wireless repeater, wireless access point, wireless bridge, or a combination of these
  • Mesh networking
  • User-configurable hardware buttons
  • Regular bug fixes and updates, even for devices no longer supported by their manufacturers

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