Learning the Network Packet Delivery Process From Scratch

Learning the Network Packet Delivery Process – Join Mark Jacob for an exploration of packet-delivery topics like understanding port numbers, establishing a TCP session, and exploring basic IP routing.

He’ll help you understand the function of routing, and what a media access control (MAC) address really is. Plus, learn about modifying packet information with network address translation (NAT) and managing traffic using access control lists (ACLs).

The process starts with applications trying to communicate to the network by using IP addresses. Again, the IP address will be learned via DNS most likely and the application will also be configured and designed to work with a certain transport layer protocol.

In this case, the application is using UDP at the transport. The layer 3 and layer 2 addresses at the bottom there are those of the sending machine and the receiving end. Notice that we now have a switch in the middle and we are going to describe the process including the way the switch understands and handles the frame.

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CHANGE YOUR IP IN LESS THEN 1 MINUTE

How To: Change Your Ip In Less Then 1 Minute

1. Click on “Start” in the bottom left hand corner of screen
2. Click on “Run”
3. Type in “command” and hit ok

You should now be at an MSDOS prompt screen.

4. Type “ipconfig /release” just like that, and hit “enter”
5. Type “exit” and leave the prompt
6. Right-click on “Network Places” or “My Network Places” on your desktop.
7. Click on “properties”

You should now be on a screen with something titled “Local Area Connection”, or something close to that, and, if you have a network hooked up, all of your other networks.

8. Right click on “Local Area Connection” and click “properties”
9. Double-click on the “Internet Protocol (TCP/IP)” from the list under the “General” tab
10. Click on “Use the following IP address” under the “General” tab
11. Create an IP address (It doesn’t matter what it is. I just type 1 and 2 until i fill the area up).
12. Press “Tab” and it should automatically fill in the “Subnet Mask” section with default numbers.
13. Hit the “Ok” button here
14. Hit the “Ok” button again

You should now be back to the “Local Area Connection” screen.

15. Right-click back on “Local Area Connection” and go to properties again.
16. Go back to the “TCP/IP” settings
17. This time, select “Obtain an IP address automatically”
tongue.gif 18. Hit “Ok”
19. Hit “Ok” again
20. You now have a new IP address

With a little practice, you can easily get this process down to 15 seconds.

P.S:
This only changes your dynamic IP address, not your ISP/IP address. If you plan on hacking a website with this trick be extremely careful, because if they try a little, they can trace it back