Knowledge of Protocols

Knowledge of Protocols

[Mohit .]

Hi,
I have just finished C & linux application programming with a tinge of socket programming.
I would like to know what do statements like the following mean
   
   - ?"Have knowledge of Protocols such as TCP/IP, IPSec, IPV6 or SSL"   


Does it mean to have a theoretical view of the facets which constitute the protocol which can be done by reading RFC ?or does it also mean to have implementation knowledge (code understanding) as well. I am not very clear about this statement which is generally used quite often.
Secondly, it the latter understanding is correct (Theory - RFC + Implementation - Code) then where to look for the code which deals with a particular protocol ?
Thanks !
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Knowledge of Protocols

[Valdis.Kletnieks at vt.edu]

On Thu, 09 Jul 2015 17:56:15 -0000, "Mohit ." said:

> I would like to know what do statements like the following mean
>    - "Have knowledge of Protocols such as TCP/IP, IPSec, IPV6 or SSL"
>
>
> Does it mean to have a theoretical view of the facets which constitute the
> protocol which can be done by reading RFC or does it also mean to have
> implementation knowledge (code understanding) as well.

It usually means "understand it from the point of view of the job you're
applying for", and "know it well enough to be productive/useful without
extensive training".

If you're applying for a network engineer, it means you understand at
least a bit about BGP and routing, how to use wireshark or other tools
to look at bits on the wire, identifying nodes that are having issues, etc.

If you're applying for a userspace programming job, it means you
know how to use gethostbyname(), send()/recv()/ and friends, and
how to use OpenSSL to connect to a remote system that wants to talk TLS.

If you're doing kernel hacking, it means you understand how all the
stuff under net/ works - and that if it says SSL it's time to go
running screaming into the night. :)
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Knowledge of Protocols

[Anupam Kapoor]

>>>>> [2015-07-09T23:26:15+0530]: "Mohit ." (Mohit):
,----[ Mohit ]
| I have just finished C & linux application programming with a tinge of socket programming.
| I would like to know what do statements like the following mean
|    
| - "Have knowledge of Protocols such as TCP/IP, IPSec, IPV6 or SSL"   
| 
| 
| Does it mean to have a theoretical view of the facets which constitute the protocol which can be done by reading RFC or does it also mean to have implementation knowledge (code understanding) as well. I am not very clear about this statement which is generally used quite often.
| Secondly, it the latter understanding is correct (Theory - RFC + Implementation - Code) then where to look for the code which deals with a particular protocol ?
`----
rfc's etc come in play once you start digging into internals of said
protocols. humble suggestion would be to start in a top->down
manner. first as a user of these, and then go 'down the stack' (so to
speak) if it strikes your fancy. 

if you don't know it already, richard-steven's networking books would
serve as an indispensable guide on your journey.

have fun !

-- 
kind regards
anupam