1. A Beginner’s Guide LTEC 4550Jeff Spradlin Fall 2013

2. Some have exclusive purposes Some may have seen their functions integrated Discrete and Individual Units

3. Source: http://www.automation-drive.com/ethernet-hubshttp://www.automation-drive.com/ethernet-hubs Network Hub Takes a signal and repeats it across all other ports on the device. Most hubs do not screen for error or collisions.

4. Source: http://www.automation-drive.com/ethernet-hubshttp://www.automation-drive.com/ethernet-hubs Network Hub Ethernet Multiple computers in a collision domain Where it’s Used. Smaller, cheaper, older networks Single-direction connections Actual Retail Price: $24-$69

5. Source: http://snpi.dell.com/snp/images/products/large/A4527470.JPGhttp://snpi.dell.com/snp/images/products/large/A4527470.JPG Switch Connects messages between units Builds a working topology Learns about its environment

6. Different Network Segments Different Types of Networks and Mediums Where it’s Used. Home and Office Networks Effective for two-way communication Actual Retail Price: $107-$189 Source: http://snpi.dell.com/snp/images/products/large/A4527470.JPGhttp://snpi.dell.com/snp/images/products/large/A4527470.JPG Switch

7. Source: http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg Router Directs Traffic on a Network Prioritizes Based on Protocol Forwards Messages

8. Different End-Units or Segments Other Routers Switches or the Gateway Where it’s Used. Everywhere. Seriously, Everywhere. Isolates Collision Domains Actual Retail Price: $62-$1,100 Source: http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg http://www.teqlog.com/wp-content/uploads/2012/02/Router.jpg Router

9. Source: http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg Bridge Routes between groups and segments Uses MAC addressing for routing

10. Network segments via Ethernet Where it’s Used. Spanning tree networks Actual Retail Price: $51-$2,900 Source: http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg http://www.crownaudio.com/media/storagebk/pressart/pr110_hz.jpg Bridge

11. Source: http://www.linksz.net/images/ROIP-102.jpghttp://www.linksz.net/images/ROIP-102.jpg Gateway Connects a LAN to a wider Network Can act as the last stop before the Internet

12. Source: Any other network device Can interface with multiple protocols Where it’s Used. May be integrated with Routers Used as a network Firewall Manage traffic in and out of Domain Maintain DNS Actual Retail Price: $34-$32,000 Source: http://www.linksz.net/images/ROIP-102.jpghttp://www.linksz.net/images/ROIP-102.jpg Gateway

13. Source: http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gate way%20firewall%202%20GB%20right%20angle%20view- gallery_pop.jpg http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gate way%20firewall%202%20GB%20right%20angle%20view- gallery_pop.jpg Firewall Protects Networks External Internal Limits or blocks traffic

14. Physical port protection Last Stop-Gap LANs, WANs and MANs Where it’s Used. Hopefully everywhere Home computing Small business Enterprise-level framework Actual Retail Price: $0-$263,000 Source: http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gate way%20firewall%202%20GB%20right%20angle%20view- gallery_pop.jpg http://www.64bit.eu/galerie/3490/Juniper%20SRX%20650%20gate way%20firewall%202%20GB%20right%20angle%20view- gallery_pop.jpg Firewall

15. Source: http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WA P121.jpg http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WA P121.jpg Wireless Access Point Converts wired connections to wireless Direct connection Relay for existing signal

16. May be integrated Connect to: Ethernet Coaxial Fiber optic Transmits/receives 2.4 and 5 GHz Where it’s Used. Home Office Large-campuses Anywhere cellular doesn’t reach Underground Buildings Moria Actual Retail Price: $63-$13,000 Source: http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WA P121.jpg http://www.bcsconsultants.com/mthosts/sequoia/bcs/media/images/WA P121.jpg Wireless Access Point