Public IP Address

To make your SDR-RADIO.com server visible to the outside world you must have a public IP address, this is an address that is reachable on the global Internet. For more information refer to Wikipedia.

Some ISP's assign public addresses which may change from time-to-time, this is known as a dynamic address. You can assign a URL to your IP address by using a site such as no-ip.com - select the No-IP Free option and read the instructions.

Firewall Configuration

You must allow incoming TCP/IP connections on the port number selected in the server's Options page, by default this port number is 7900. The protocol only uses TCP/IP; UDP (which by definition is unreliable) is not used.

You may have more than one firewall activated:

• Your router,
• Windows Firewall.

Check that:

1. You do not have stateful inspection enabled. For more information refer to Wikipedia.
2. You do not have excessive bandwidth control enabled.
3. You do not have flood control enabled.

Aniti-Virus

Make sure you do not have anti-virus software inspecting and/or blocking TCP/IP traffic on the server port.

Port Forwarding

As well as allowing incoming TCP/IP connections on port 7900 you must route connections on this port to the computer where the server is running, this is known as Port Forwarding.

In your router configuration software this may be referred to as:

• Port Forwarding,
• Forwarding - Virtual Servers,
• SUA/NAT (a trade name owned by ZyXEL).

For more information please visit http://portforward.com/.