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DNS Issue-workstations not updating new DNS settings

Posted on 2014-12-18
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Last Modified: 2014-12-18
Our firewall does DHCP and I set the DNS servers to be the two domain controllers.

DNS used to be set to both the domain controllers and to our ISP providers DNS servers.  I changed it to only the domain controllers and use forwarders for addresses outside the LAN.

I flushed DNS on workstations and did a release/renew on the network card, rebooted and an ipconfig still shows the isp external DNS servers.

I checked the firewall and it only has internal domain controllers/dns servers listed.

How can I get workstations to only show internal DNS servers in ipconfig?

Thanks,

cja
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Question by:cja-tech-guy
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Ben Hart earned 500 total points
ID: 40507643
How long are the DHCP leases set for on your firewall?  Maybe purge that lease, then renew and see if it gets the correct DNS ip's.
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by:vipelite
ID: 40507661
What type of FW are you using?
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Author Closing Comment

by:cja-tech-guy
ID: 40507685
Your suggestion led me to another settings page on the firewall that still had external DNS servers listed.  I made the changes, all good now.  Thanks
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