Hello all

only for learning purposes and my interest for deeper network programming. I wanted to write a program and filter the entire traffic in my network. I have a server and various computers in my network, but I dont know, as I in D the promiscous mode for sockets can switch on.

Is this possible in D ? I dont want back to C and in Rust.. Rust.... :)
I Love to write some Code in D, its a beautyful language.

And so sorry for my english, i understand good, but to write english, i must more learn :)

happy greetings

fichtknick

On 2017/09/30 17:17, fichtknick wrote:
> Hello all
> 
> only for learning purposes and my interest for deeper network programming. I wanted to write a program and filter the entire traffic in my network. I have a server and various computers in my network, but I dont know, as I in D the promiscous mode for sockets can switch on.
> 
> Is this possible in D ? I dont want back to C and in Rust.. Rust.... :)
> I Love to write some Code in D, its a beautyful language.
> 
> And so sorry for my english, i understand good, but to write english, i must more learn :)
> 
> happy greetings
> 
> fichtknick
Promiscuous mode works on the layer 2 layer. In most cases this would be ethernet. With it on you would be able to see all ethernet frames (with payloads in them, like IP packets). This includes those not destined to your computer (by it's MAC address (a.k.a. hardware address)).

Promiscuous mode only works if you are using a hub (or a switch that you can control) as hubs simply bit replicate all incoming frames to all other ports hence computers will even receive ethernet frames not intended for them. Hubs are not common these days as a switch actually sends etheret frames to the correct hosts (after its dictionary is fully built) but WiFi (because the electro-megnetic radiation goes everywhere (all devices receive the ethernet frames) and hence it is a hub.

Anyway, networking is not my strongest point (I am studying it too currently). From what I know Dlang only allows one to use layer 3 protocols (like IP).

On 2017/09/30 17:17, fichtknick wrote:
> Hello all
> 
> only for learning purposes and my interest for deeper network programming. I wanted to write a program and filter the entire traffic in my network. I have a server and various computers in my network, but I dont know, as I in D the promiscous mode for sockets can switch on.
> 
> Is this possible in D ? I dont want back to C and in Rust.. Rust.... :)
> I Love to write some Code in D, its a beautyful language.
> 
> And so sorry for my english, i understand good, but to write english, i must more learn :)
> 
> happy greetings
> 
> fichtknick
Hopefully I helped in someway. I do not know the method of doing low-level networking like looking at layer 2 (specifically ethernet) traffic.

Godspeed.

On 2017/09/30 17:17, fichtknick wrote:
> Hello all
> 
> only for learning purposes and my interest for deeper network programming. I wanted to write a program and filter the entire traffic in my network. I have a server and various computers in my network, but I dont know, as I in D the promiscous mode for sockets can switch on.
> 
> Is this possible in D ? I dont want back to C and in Rust.. Rust.... :)
> I Love to write some Code in D, its a beautyful language.
> 
> And so sorry for my english, i understand good, but to write english, i must more learn :)
> 
> happy greetings
> 
> fichtknick
D is a good language.