Using Netiom-UDP on the Internet
Netiom-UDP can work on wide area networks such as the Internet as well as local networks.
Dial up networks using modems are not suitable for accessing Netiom-UDP.
The local network will be connected to the Internet via a gateway. This may be a computer or
an ADSL router or some similar device. The gateway will have two IP addresses, one which it
will present to the local network and one which it will present to the Internet. The Internet IP
address will be supplied by your ISP.
If you are connecting to Netiom-UDP via the Internet then you will need to use the Internet IP
address. You will also need to tell the gateway to route incoming traffic to Netiom-UDP. This
is called “Port Forwarding”. Thus you will need to set the gateway “Port Forwarding” to the
same port as you have defined the Port Number parameter to the Netiom-UDP IP address.
Then any port requests the gateway receives from the Internet will be forwarded to Netiom-
UDP.
Troubleshooting
Problem: No LEDs are illuminated
Solution: This is likely to be a power problem. Check that power is connected and that it is the
correct polarity.
Problem: The green LED is off but the red and yellow are on.
Solution: This is an ethernet connection problem. Make sure that the ethernet cable is firmly
in position at both ends. Is the router or hub is switch on?
Is the cable good and is it the correct type? There are two types of ethernet cables, straight
through and cross over. If you are connecting into a hub or router you should use a straight
through type. If you are connecting directly to a PC you will need to use a cross over type.
Problem: Netiom-UDP will work fine on a local network but it will not work over the internet.
Solution: Make sure that you have not set the client addressing to Use Broadcast Address at
either end of the link.
Make sure that you have set port forwarding on both gateways to the correct port and IP
address.
Some gateways will remember old IP addresses and their associated MAC addresses. Thus
the gateway may be forwarding packets using an incorrect MAC address. Try resetting the
gateway or changing the IP address of the Netiom-UDP to another address.
Phaedrus Limited
Unit 1
Darwen Enterprise Centre
Railway Road
Darwen
BB3 3EH
U.K.
Tel / Fax +44 (0)1254 772622
e-mail [email protected]
Issue 1
March 2005
