Packet breakdown

[Orangeb]

Dear Everyone,

I am hoping someone can simplify some basic stuff for me?
I want to get into networking, but from what I can see i am gonna have to start somewhere like 1st line support, and work from there, as I have no experience with this. I was training to be a counsellor, but I lost heart in it.

I should have done computing from the start - i was hooked on them from about age 8, when Dad let me use his Atari - late 80s!.

Anyway I made the mistake of diving into everything on computing at once from OSI to Active Directory, also looking at CCNA and Comp tia. Now I am in a mess, as I understand a lot of the layer etc for the OSI, but I am missing the v basic stuff that you need.

Packet Data being one of them. I understand you have headers - which contain protocols - IP, TCP, UDP, HTTP,

But in the headers there must be the IP address too? I am missing the structure I guess. I know you need only 1 protocol out of some of those I have listed. I am just not good with how the rest of the header exists - just in a diagram in my head, kinda thing.

If anyone could help that would be good.

Many thanks,
Matthew

 

[voyagerfan99]

I would recommend studying the material for Network+ or CCNA and that will get you all the info you need.

In the meantime, look at this. https://www.cloudflare.com/learning...st of two portions,payload is the actual data.

 

[beers]

Most studying references the OSI model, you can see each encapsulation layer and headers upon each protocol in the stack.

That's why questions like 'whats the difference between a hub, switch, and router' are relevant as they process data on different headers, it expands down the line when you're doing things like IPsec or VXLAN as it's a similar encapsulation concept.

You don't -have- to start off at the help desk, but your current level of knowledge isn't going to land a network engineering job. I'd take a look at the net+ and CCNA content as @voyagerfan99 indicated, it's structured in a way to acclimate you to the various concepts and how they are utilized and interact with an environment.