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No interetn when using static IP on a Windows domain

Posted on 2014-02-17
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Last Modified: 2016-01-11
Hi Guys,

Would really appreciate some help with this one.

I have setup a new domain controller, running Server 2012. Configured DNS, DHCP, AD DS (correctly to the best of my knowledge- So maybe not!).

My local workstations have been connected to the domain and I have also connected 2 other Win Server 2012 servers.

When the devices (any and all) have IP addresses assigned by the DHCP server, they have lan and wan access. However, if I assign static IP addresses (out of the scope of the DHCP) they still have access to the lan but they cannot Access the wan. Again if I change it back to DHCP assigned IP the device will work fine.

I'm guessing I've missed something in the setup/config of the DHCP server but just not sure what that is. Any suggestions greatly appreciated.

Thanks for your help.

Nick.
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Question by:ITTR
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Expert Comment

by:Miguel Angel Perez Muñoz
ID: 39866719
I think your static IP is not on same network segment that default gateway or missing some value on TCP/IP config, Could you explain your DHCP scope and what static IP config have got?
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Author Comment

by:ITTR
ID: 39866790
Yeah Sure thing:

DHCP Scope: 192.168.1.100 - 192.168.1.200

DHCP Server (also DC):
IP: 192.168.1.5
Subnet: 255.255.255.0
Default GW: 192.168.1.254 - Router Address
DNS: 61.9.194.49

Hyper V Server 1-Worked fine before adding to domain, works with DHCP assigned ip:
IP: 192.168.1.6
Subnet: 255.255.255.0
Default Gateway: 192.168.1.5 (DHCP/DC Server)
Preferred DNS: 192.168.1.5
Alternate GW: 61.9.194.49

Hyper V Server 2-Worked fine before adding to domain, works with DHCP assigned ip:
IP: 192.168.1.7
Subnet: 255.255.255.0
Default Gateway: 192.168.1.5 (DHCP/DC Server)
Preferred DNS: 192.168.1.5
Alternate GW: 61.9.194.49

For the other workstations I've had various IP addresses etc. When DHCP is assigned on any device, servers included, the only thing that I can see that changes is the IP, obviously because the DHCP changes it to fit in the scope. Everything else appears to stay the same.

Is there a possibility I've missed something when setting up DHCP? Is there an area to add approved static IP addresses?

Thanks heaps.

Nick.
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Accepted Solution

by:
Miguel Angel Perez Muñoz earned 2000 total points
ID: 39866801
Your default gateway must be 192.168.1.254, why are you using 192.168.1.5?

Plus, have you configured your DNS to use 61.9.194.49 as forwarder? http://social.technet.microsoft.com/Forums/windowsserver/en-US/720645c4-0d49-49bf-a76d-70d76e9df9ce/how-to-configure-dns-forwarders-in-windows-2008-dns?forum=winserverNIS
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