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TOPIC: osi model with ftp

osi model with ftp 15 years 2 months ago #574

  • anwar
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hi :!:

i want to know in detail about osi layers by taking ftp example into consideration. could u plz send me the details of osi layers with protocols with ftp example.

bye
:D

Re: osi model with ftp 15 years 2 months ago #583

  • Chris
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Anwar,

Have you searched this site for the information your requesting?

The OSI model is available here, along with the FTP protocol.

I'd recommend you read the following topics in the indicated order to help you understand and solve your question:

1) The OSI Model + Encapsulation/Decapsulation page
2) Protocols (Introduction)
3) TCP and UDP
4) Ftp Protocol

The data and instructions contained within a packet of a FTP session is not that much of interest when your trying to understand how the protocol works and transfers data from one point to another.

If you can understand the OSI reference model and how it users the underlying transport protocols (TCP and UDP) to service the above layer protocol like FTP or TFTP, then you can see the big picture and realise how it all works.

The instructions the ftp client and server send to each other is of little importance to us, since we are interested on how the transfering model works, and for this reason, it is important to understand the above suggested topics.

Cheers,
Chris Partsenidis.
Founder & Editor-in-Chief
www.Firewall.cx

Re: osi model with ftp 15 years 2 months ago #730

I would reccomend you download a protocol map.. basically what they show are all protocols at each layer of the OSI model, and how they interconnect.. I have one as a pdf but its too big to upload anywhere.. besides you can get them online..

I think the site is www.decodes.com
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com

Re: osi model with ftp 15 years 2 months ago #732

  • tfs
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Actually,

A protocol map is on this site at the Networking/Protocols/"Introduction to Network Protocols" page.

As Sahirh says, it is very helpful to get a visual picture of how they all relate.

Tom.
Thanks,

Tom
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