Hey,
So after a while I figured out and got it working to give the Arduino a static IP and was able to ping to it's IP while it was connected to the client-router.
Code:
#include <EtherCard.h>
static byte mymac[] = {0xDD,0xDD,0xDD,0x00,0x00,0x01};
static byte myip[] = {192,168,0,240};
byte Ethernet::buffer[700];
void setup () {
Serial.begin(57600);
Serial.println("PING Demo");
if (ether.begin(sizeof Ethernet::buffer, mymac, 10) == 0)
Serial.println( "Failed to access Ethernet controller");
if (!ether.staticSetup(myip))
Serial.println("Failed to set IP address");
}
void loop() {
ether.packetLoop(ether.packetReceive());
}
I've been searching on how to send data over it, and came across UDP, any thoughts on different communication protocols?
It's not much data that needs to be send, but I can't really get it to work right now. The receiver must receive the data in VB.net, so it can be processed and send back.
I found a tutorial on youtube for simple UDP packet transmitter and receiver, but can't receive anything. link: Visual Basic How To: Simple UDP - YouTube
I've tried some code in Arduino, but it's all messed up again thanks to many modifications and frankly I don't think it's going to work with my current Arduino code. I've used the ether.sendUdp function, but can't receive any message in VB.net. http://jeelabs.net/pub/docs/ethercard/index.html
I've also installed Wireshark, and started filtering for 'UDP only', but no messages came through with the correct sender or destination IP (so all the UDP messages were from the router or other network material).
Please do link me good tutorials or recommend using a other/better communication protocol.
Hope my current situation is explained clear enough to understand 
Regards,
Dries