Data packet details

  • Thread starter Thread starter Guest
  • Start date Start date
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Guest

Hi all,
I hope that I have posted to the correct forum. If not please advise.
I would like to learn more about the way network data packets travel the
internet with their 0 and 1.
As an example when I use www.canyouseeme.org the IP address returned is
public whilst the IP address on my PC is different (local). Where does the
local IP change from local to public ? My local router or my ISP ?
 
Hi all,
I hope that I have posted to the correct forum. If not please advise.
I would like to learn more about the way network data packets travel the
internet with their 0 and 1.
As an example when I use www.canyouseeme.org the IP address returned is
public whilst the IP address on my PC is different (local). Where does the
local IP change from local to public ? My local router or my ISP ?
Click to expand...

Your router receives an Internet connection request from your
computer. The router substitutes its public IP address for your
computer's local IP address before sending the request to your ISP.

The reply arrives at the router through its public IP address. The
router, which has remembered the connection request, puts your
computer's private IP address into the reply and sends the reply to
your computer.

Here's a more technical explanation of this "Network Address
Translation" process:

http://technet.microsoft.com/en-us/library/bb457077.aspx
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
Thanks for the lead. If I had to sniff a data packet on my network how would
I go about this ?
 
Thanks for the lead. If I had to sniff a data packet on my network how would
I go about this ?
Click to expand...

Here's a very good, free packet sniffer:

http://www.wireshark.org
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
This looks like something that will keep me busy for some time. Thanks for
your guidance
 
This looks like something that will keep me busy for some time. Thanks for
your guidance.
Click to expand...

You're welcome!
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
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