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Back to Eli

Categories: Network Windows

'Back to Eli' is a typical expression used by it-professionals, when they run into people who are supposed to be professionals but actually are missing some basic computer knowledge. Eli the computer guy is a YouTube teacher that makes little movies about technology and he repeats himself so many times that it is impossible you will ever forget...

http://www.youtube.com/user/elithecomputerguy

Why would you hack your dns?

  • block pages from employees on corporate network
  • routers do not allow to loop outside your network and back in

Order in which DNS resolves domain names into ip addresses

  • browser
  • local hosts file
    • Windows: dir C:\Windows\System32\drivers\etc\hosts
    • Linux: ls -l /etc/hostsĀ 
  • local or private dns server
    • mostly the one handing out DHCP eg. router
    • service like dyndns.com
  • public dns servers

Free DNS

  • google.com: 8.8.8.8 and 8.8.4.4 (DNS Client Service)
  • opendns.org: 208.67.222.222 and 208.67.220.220 (filtered dns)

VPN - Virtual Private Networking

  • old routers might not allow vpn pass-through