Help with reverse lookup zone

Discussion in 'Active Directory' started by Cyborg, Feb 1, 2008.

  1. Cyborg

    Cyborg Guest

    Hi,

    We have a 2003 AD network. I want to be able to nslookup an IP and get it
    to resolve the DNS name for it. Currently this doesn't work. We have some
    web servers with public IP's and I want to be able to type nslookup 1.2.3.4
    and it comes back with "webs_server123" for example or what ever DNS name I
    say, is this possible?
     
    Cyborg, Feb 1, 2008
    #1
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  2. The reverse zone would be hosted by your ISP, since they own these addresses
    Anthony
    http://www.airdesk.com
     
    Anthony [MVP], Feb 1, 2008
    #2
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  3. Bring up your dns server mmc console
    Select the Reverse Lookup Zones
    Right Click and Select New Zone
    Next
    Primary Zone
    Next
    Select Network ID
    Enter the subnet to reverse on
    Next
    Select a new file with this file name
    Leave defaulted
    Next
    If AD Select All only secure updates
    Next
    Finish
     
    Paul Bergson [MVP-DS], Feb 1, 2008
    #3
  4. Cyborg

    Cyborg Guest

    I just want to do an internal lookup, which I think I have done. On my DNS
    server I created a new reverse lookup zone for 3.2.1,in-addr.arpa 3.2.1.0
    being a public address. I than added a PTR with the IP of the external IP
    and broased for the host name in the forward lookup zone. Well it's
    resolving nicely.
     
    Cyborg, Feb 1, 2008
    #4
  5. Ummmm, I hit the send to quick. If the dns is held by your isp and they
    manage your dns then you will need to talk to them, but if you are managing
    your dns then follow below, but don't select dynamic updates. My guess is
    your ISP will need to manage this.
     
    Paul Bergson [MVP-DS], Feb 1, 2008
    #5
  6. Cyborg

    Cyborg Guest

    Well our AD manages our internal DNS and we forward any unresloved IP's to
    an external DNS server housed by our ISP. The thing is I just want to
    create friendly names for my LAN not the actual Internet address. So I
    would want "ftpserver" and not ftp.domainname.com

    I added the zone like you same and it seems to be working. I take it if I
    wanted the actual Internet name for the IP then the ISP would do that, but
    if I just want my LAn to resolve these to friendly names then I'm ok?
     
    Cyborg, Feb 1, 2008
    #6
  7. Yes, if its an internal zone you set it up on your DNS server as Paul said.
    If its an external zone (as it would be for the external IP address you
    mentioned) then its the ISP.
    Anthony
    http://www.airdesk.co.uk
     
    Anthony [MVP], Feb 1, 2008
    #7
  8. Sounds like things are working well for you.



     
    Paul Bergson [MVP-DS], Feb 4, 2008
    #8
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