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windows server 2008 R2 DHCP and DNS problem

Posted on 2010-11-12
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Last Modified: 2012-05-10
hi
colleague of mine bought a server from the third party provider where he wants to install certain application now the server is accessible via remote desktop however the vpn doesnt seem to work and their is some dns problem as well when i try to connect i get 169 range ip address which i believe is faulty now the actual ip address scheme on the server is 192
sbs-dhcp.JPG
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Question by:mattibutt
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by:Darius Ghassem
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How are you connecting to the server through VPN? If  you are then the IP scheme you are getting is from the VPN solution
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by:mattibutt
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hi
when i am connecting via remote desktop putting in the public ip address without connecting through vpn it works fine but i try to establish the vpn itself i get the following ip address
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by:mattibutt
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Unable to contact a DHCP server. The Automatic Private IP Address 169.254.153.130 will be assigned to dial-in clients. Clients may be unable to access resources on the network.

this is what i get in the event log
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by:Darius Ghassem
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You need to setup the VPN to allow your internal DHCP server to hand out IP addresses through the VPN or allow the VPN to hand out IP Addresses through the VPN.

These settings are within the VPN settings
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by:mattibutt
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how do i get there in server 2008
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by:mattibutt
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hi
this is my setup for dhcp
dhcp.JPG
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by:Darius Ghassem
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Go into Routing and Remote Access you will see the option
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by:mattibutt
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hi
i saw some instruction online but configure routing and remote access is disabled
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by:Darius Ghassem
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What type of VPN are you setting up? Is this a Windows 2008 Server VPN
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by:mattibutt
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by:Darius Ghassem
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Go to IPv4 thi is the options to setup
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by:mattibutt
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hi
i think the default vpn will do the one is part of the windows server 2008 thing vpn worked fine when my colleague setup this server basically he has made a mistake by setting server ip to be dynamic and then he lost the access to the server since then server provider has fixed that but vpn doesnt work now
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by:Darius Ghassem
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Because you are not getting a valid IP address from the VPN server
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by:mattibutt
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ya thats the case but where do i go from here
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by:Darius Ghassem
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You need to go into RRAS configure the VPN under the IPv4 interface to run DHCP relay or give out valid IP addresses
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by:mattibutt
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how do i get there?
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by:Darius Ghassem
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You just show me a screenshot
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by:MSFT_NET_SEE
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In the screenshot that you provided, you right-clicked on Routing and Remote Acess. Go back to there, right-click the same place, but go to Properties. On the IPv4 tab, you'll have the option to use DHCP to assign addresses or to use a pool of addresses that you configure locally.

The default is to use DHCP, so if this isn't working. Then you might need to configure DHCP Relay to forward DHCP requests to a specific DHCP server on behalf of the clients. This is done under the node IPv4 on the left hand side of the RRAS managment console.

If the DHCP server and the RRAS server are on the same subnet though, this should be working, so the problem at that point could be the fact that your DHCP scope is out of addresses. You only have made 10 available. The RRAS service at startup attempts to grab a pool of addresses to hand out to the clients. I forget the number it will grab, perhaps 5, but if they aren't available that would fail. I think an error is logged in the system event log on the RRAS server, but I don't remember exactly.
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by:mattibutt
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hi
i have sort of asked the company to reinstall the server i am still having the same problem its not issuing the ip address to the clients
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MSFT_NET_SEE earned 500 total points
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Can you tell us how the server is setup based on what I provided you above? For example, are you using an IP address pool on the RRAS server, or are you using DHCP to give out addresses? If DHCP, is the DHCP server located on the same subnet as the RRAS box? How many addresses are availalbe in the DHCP lease currently? Do you have IP Routing enabled on the RRAS server?
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by:mattibutt
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RRAS server how do i obtain information about RRAS server
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by:mattibutt
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Hi
I think I have about 100 ip addresses  but the problem is the actual dhcp server inability to issue the ip addresses
Basic server details
The server is setup over vmware provided by the third party so I have no information avialable how the network is setup or the router so its kind of a different case then having a server under your own control
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by:mattibutt
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ok
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