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What is OpenWrt

What is OpenWrt. Free and open source Easy and free access Comminity driven ---- linux -kernel based OS for your home router from openwrt.org. Routers is on embedded System. Today’s routers/switch is embedded system running linux -kernel based OS and routing/switch software on this OS

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What is OpenWrt

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  1. What is OpenWrt • Free and open source • Easy and free access • Comminity driven ---- linux-kernel based OS for your home router from openwrt.org

  2. Routers is on embedded System • Today’s routers/switch is embedded system running linux-kernel based OS and routing/switch software on this OS • Architecture of routers 90% MIPS Others including ARM(some new models) PowerPC(some old models) X86(special ones)

  3. Routers is on embedded System • Since it runs complete linux-kernel OS, your home router is an compter. • With about 400-600MHz MIPS CPU • 8-64MB ROM • 32-128 RAM • IO Ethernet USB …

  4. Other 3-party firmware for home routers • Tomato • DD-wrt • … Web control GUI is more friendly to common users. • OpenWRT is more flexible to professional users.

  5. OpenWRT is the opensource OS running in your router, whichmakes that only limit is hardware. Linksys WRT54G

  6. Why it is useful? • Very good and affordable platform to learn embedded system and developing on it. • Enhance your home router , and save cost • Learn and practice setting VLAN in your home • Understand deeper in networks • Make it as a server with light works, instead of using a computer running 24*7

  7. How to get the firmwarefor the specific model • Direct download from openwrt.org • Some model need modify some sourcecode and build, compile and make it by yourself • If compiling by yourself, you can preload some packages. • http://wiki.openwrt.org/doc/howto/buildroot.exigence

  8. How to install it to router • The firmware uploading page in web control GUI • FTP mode • TFTP mode • Serial Port cable (TTL cable) • …

  9. After installing itDo whatever you want to Control your router in SSH Operating as a linux machine Or login to Web GUI • Make the router to wirelesss bridge • Make USB port support printers, storages, your phone usb tethering, 3G dongle… • BitTorrent downloading client • Personal blog web server • Proxy client, Proxy Server • VPN client, VPN Server • DNS server, NTP server, SMTP server… • …

  10. Thanks for listening.

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