Static IP on LAN

15 pts.
Microsoft Windows
Networking services
Hi All, I have 2 machine running on 2003 and 1 on XP, All 3 machine connect to a router via switches which also also has ability to generate DNS. One of the 2K3 machine is main domain controller server. All is fine, but problem occurs when I assign a static IP to an another 2K3 machine for remote access. It stop communicating with other two. I am not a networking guy so don't know how to resolve this problem. Any help please? Thanking you & Best Regards,

Answer Wiki

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It sounds like you are assigning an address that is either outside of the subnet (allowed range of addresses) or one that DHCP has already assigned to another station. If you can either look at the settings in your DHCP Server for the subnet or on one of the PCs open a Command Window and run ipconfig /all. Copy the info from either one and post the results or email it to me I could possibly help you.
I would like to know the address that you were attempting to assign the PC in question also.

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  • Inamhaque
    Hi All, Thank you very much for your time and valuable suggestions... yes I have public IP provided by ISP, thats the IP address I have assigned to 2003 server, All the machines have same subnet mask. you are right the router does provide the IP to client which request one. I will try this the dwie's suggestion first and will post the feed back here. Best Regards
    15 pointsBadges:
  • FlyNavy
    Even if your DHCP address is in the subnet range and the address has been excluded from the DHCP pool, you need to register an "A" record in DNS. Otherwise, the DNS server is not going to know how to route the info to the machine. Also remember that your setup may have a differnt default gateway for the remote machine than you have for the local machines.
    0 pointsBadges:
  • Dwiebesick
    FlyNavy don?t confuse him as DNS does not apply regarding remote access to his server. You DO NOT apply your external IP address to your server. That IP is set in your router. You then configure your router to forward port 3389 request to your server which you will assign a static IP from your network subnet. For example Router internal IP external IP from ISP 64.21.323.xx 2003 Server #1 Remote 2003 Server #2 Configure router to send 3389 to When you use remote desktop from outside your network, enter 64.21.323.xx You can test remote access from within by remote desktop connection enter Let us know how you are doing dmw
    2,235 pointsBadges:
  • Astronomer
    Since you aren't a network person, I will try to make it simple. The other respondents are correct, the public address needs to be assigned to the external interface of the router. You will have to configure the server with a static IP and subnet mask for the internal net. As a rule servers should have static addresses anyway. Make sure this address is not within the scope of addresses given out by the DHCP server. Set the internal router interface IP as the default gateway for your server. On the router, you need to set up a static NAT forwarding the ports you want sent to the server. This process goes by a variety of names so check the instructions for your router. Once you are done, any request going to the public address and port you have NATed will be forwarded to the private IP of the server behind the router. rt
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