1 / 14

Basic Networking

Basic Networking. Vermont Department of Libraries Prepared by Rob Geiszler. Some Fundamental Concepts. THE Network A little history (DARPA – ARPA – DARPA) A little technology Packet switching The packet header Addresses & Licenses License Classes

cedric
Download Presentation

Basic Networking

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Basic Networking Vermont Department of Libraries Prepared by Rob Geiszler

  2. Some Fundamental Concepts • THE Network • A little history (DARPA – ARPA – DARPA) • A little technology • Packet switching • The packet header • Addresses & Licenses • License Classes • Internet Corporation for Assigned Names and Numbers • The Domain Name Server

  3. DNS System http://commons.wikimedia.org/wiki/File:Domain_name_space.svg

  4. Your network Lucid, http://commons.wikimedia.org/wiki/File:Homenet.svg

  5. The NIC futase_tdkr , http://commons.wikimedia.org/wiki/File:NIC_on_RTL8139C.JPG

  6. Your Network and THE Network • Addresses, Addresses, Addresses • The MAC address • Public Addresses • Private Addresses • 192.168.x.x • 10.0.x.x • Static addressing vs. Dynamic Host Configuration Protocol • ipconfig • ipconfig /all

  7. Interpreting ipconfig

  8. The Router • Configuration issues using the configuration screens • Router default accounts and passwords: • http://www.phenoelit-us.org/dpl/dpl.html • http://www.routerpasswords.com/index.asp • Or check the manufacturer’s website • URLs usually 192.168.0.1, 192.168.1.1 or 192.168.2.1 • Remember the RESET button

  9. Network troubleshooting • Check ALL the connections! • Check ALL the connections – AGAIN! • Ipconfig – are all the ducks in a row? • ping – are we connected? • To test for connection • To test for DNS • tracert – where does the connection fail?

  10. Network protocols and : ports • TCP/IP • http:80 • FTP:21 • SSH:22 • Telnet:23 • smtp:25 • DNS:53 • IMAP:143 • https:443 • dhcpv6:556 (client) • dhcpv6:557 (server)

  11. Cables – CAT 5 & 6 ← Regular (Straight) T568B Crossover →

  12. Jacks – CAT5 & 6

  13. Adding wireless • What’s different about wireless? • The configuration screen • Security on wireless routers • When? • Keys • WEP • WPA • WPA2 • Access points and repeaters

  14. Some helpful utilities • Ipconfig • ping • Tracert • Softperfect Network Scanner: • http://www.softperfect.com/products/networkscanner/

More Related