# D4 core ![](https://www.d4-project.org/assets/images/logo.png) D4 core are software components used in the D4 project. The software includes everything to create your own sensor network or connect to an existing sensor network using simple clients. ![https://github.com/D4-project/d4-core/releases/latest](https://img.shields.io/github/release/D4-project/d4-core/all.svg) ![https://github.com/D4-project/d4-core/blob/master/LICENSE](https://img.shields.io/badge/License-AGPL-yellow.svg) ## D4 core client [D4 core client](https://github.com/D4-project/d4-core/tree/master/client) is a simple and minimal implementation of the [D4 encapsulation protocol](https://github.com/D4-project/architecture/tree/master/format). There is also a [portable D4 client](https://github.com/D4-project/d4-goclient) in Go including the support for the SSL/TLS connectivity.

d4-cclient

### Requirements - Unix-like operating system - make - a recent C compiler ### Usage The D4 client can be used to stream any byte stream towards a D4 server. As an example, you directly stream tcpdump output to a D4 server with the following script: ```` tcpdump -n -s0 -w - | ./d4 -c ./conf | socat - OPENSSL-CONNECT:$D4-SERVER-IP-ADDRESS:$PORT,verify=0 ```` ~~~~ d4 - d4 client Read data from the configured and send it to Usage: d4 -c config_directory Configuration The configuration settings are stored in files in the configuration directory specified with the -c command line switch. Files in the configuration directory key - is the private HMAC-SHA-256-128 key. The HMAC is computed on the header with a HMAC value set to 0 which is updated later. snaplen - the length of bytes that is read from the version - the version of the d4 client type - the type of data that is send. pcap, netflow, ... source - the source where the data is read from destination - the destination where the data is written to ~~~~ ### Installation ~~~~ cd client git submodule init git submodule update ~~~~ ## D4 core server D4 core server is a complete server to handle clients (sensors) including the decapsulation of the [D4 protocol](https://github.com/D4-project/architecture/tree/master/format), control of sensor registrations, management of decoding protocols and dispatching to adequate decoders/analysers. ### Requirements - Python 3.6 - GNU/Linux distribution ### Installation - [Install D4 Server](https://github.com/D4-project/d4-core/tree/master/server) ### Screenshots of D4 core server management ![](https://raw.githubusercontent.com/D4-project/d4-core/master/doc/images/main.png) ![](https://raw.githubusercontent.com/D4-project/d4-core/master/doc/images/sensor-mgmt.png) ![](https://raw.githubusercontent.com/D4-project/d4-core/master/doc/images/server-mgmt.png) ![](https://raw.githubusercontent.com/D4-project/d4-core/master/doc/images/analyzer-mgmt.png) ![](https://raw.githubusercontent.com/D4-project/d4-core/master/doc/images/server-mgmt2.png)