I'm setting a few sites up and many email accounts for a new company so I wanted to save some money as I already have a server running Windows Server 2008 R2.

I have a static IP of and the server's IP is configured as The server is at a business address and is using business broadband. Upon asking 123-reg.co.uk to add an A record for my FQA they have informed me I should not be using under IPv4 settings manually and I should be using the actual static IP of

When I try to add under IPv4 it loses connectivity and under the machine's IP of I am seeing the DNS server is running OK.

Is what the rep at 123-reg told me incorrect?


Yes, the rep is correct. is a private IP range, and isn't available to the public Internet.

What you will need to do is use your public IP in the DNS record and then port-forward to one of your private IP addresses.

My personal advice, though, is to NOT use home Internet/networking for business use. What happens when your home broadband service or phone line goes down? Is your customer happy with having their data hosted on a residential premesis? How good is your home security (as well as your home network security)?

  • Hi sorry I didn't mention this is at a business address and is using business broadband. I am currently looking into some hardware based firewalls, any suggestions? - The title should have been first business server, doh! - PS: I'm not going to be using this for anybody elses businesses but my own until I fully understand the server inside out. – user173421 May 12 '13 at 12:38
  • Also, how do I port forward the public IP to the private IP of the machine within Windows server 2008? – user173421 May 12 '13 at 12:39
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    You'll need to use NAT (or more specifically Destination NAT or DNAT) to forward the specific ports you require via your router/firewall. Your device's documentation will help you with the exact steps. – Craig Watson May 12 '13 at 13:45
  • Do I need to use two network cards for this, one for LAN and one for WAN as I've just installed Routing and Remote access on the Server but when I go through the steps of configuring and enabling NAT the 'use public interface to connect to the internet' is not allowing the radio button but 'create a new demand dial interface to the internet' is. Thanks for all the help thus far it's much appreciated! – user173421 May 12 '13 at 20:21
  • I did not have to use NAT in the end I could port forward using DMZ in my router 'Technicolor TG582N' - Simply had to open port 80 for applications and then enable the server to bypass the firewall and NAT of the gateway. – user173421 May 12 '13 at 22:52

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