Issues with DNS

Posted on 2006-06-01
Last Modified: 2010-03-18
For some strange reason the PC's on my network are using a DNS server in the network as their DNS provider (used to provide name resoluion for remote devices), however I have never set the PC's up for that. As well my DHCP server is not set to provide this. If shut down the DNS server and release renew the PC's IP info it still points to the DNS server. Any ideas?


Question by:bradbritton
    LVL 48

    Expert Comment

    Hi bradbritton,

    if you have DNS settings in your DHCP scope yet it still finds the DNS servers it is because it broadcasts and finds it.....

    otherwise it would have nothing at all and be useless
    LVL 8

    Expert Comment

    Any possbility that you have a second DHCP server on the network?  When you have the DHCP server stopped release and renew the IP address and check the DHCP server line on the output of ipconfig /all on the clients.

    Author Comment

    I have a Firebox SOHO 6 setup to adminster DHCP. Should I shut down the DHCP server then reboot the PC's to see if they get DHCP from the firebox.??
    LVL 8

    Accepted Solution

    No, you just need to be sure that the firebox is not currently assigning addresses.  You can confirm where the addresses are coming from by checking the ipconfig /all results on the client.  

    The dhcp server line will either be the ip address of your server or the firebox depending on which is currently assigning the address.

    Featured Post

    What Should I Do With This Threat Intelligence?

    Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

    Join & Write a Comment

    Enterprise networks where VoIP phones have been deployed frequently use port configurations that allow both a computer and an IP phone to be plugged into the same switch port but use different VLANs. On Cisco equipment I'm referring to the "native V…
    Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
    Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

    754 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now