1. No Profile Picture
    Registered User
    Devshed Newbie (0 - 499 posts)

    Join Date
    Feb 2004
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    NEWBIE PROBLEM: DNS and Active Directory

    I have recently joined a company who originally had three Domain Controllers but have since reduced that number to just two.

    Additionally, we have installed SurfControl WebFilter which retrieves the username of whoever is logged onto a machine (using EUM - Enterprise User Management - an application that came with WebFilter and which was installed on the Domain Controllers). For example:

    USERNAME: domain/bri LAST IP:
    USERNAME: domain/administrator LAST IP:


    The problem is that nearly a third of the users on our LAN are not having their usernames resolved, and are instead showing records like this:


    I am assuming that the reason why these IP addresses aren't being resolved is because they were formerly managed by the Active Directory that we are no longer using.

    Am I on the right track? How do I begin to solve this problem?

    Many thanks if you can help,

  2. #2
  3. DNS/BIND Guru
    Devshed Specialist (4000 - 4499 posts)

    Join Date
    Jun 2003
    OH, USA
    Rep Power
    Create a reverse zone for the appropriate IP blocks and assign a PTR record for each IP you want to assign a domain (or username if you prefer) to. At least, that's the DNS solution. username or computername or whatever resolution is typically handled by NetBIOS - which I know little about.
    Send me a private message if you would like me to setup your DNS for you for a price of your choosing. This is the preferred method if your DNS needs to be fixed/setup fast and you don't have the time to bounce messages back and forth on a forum. Also, check out these links:

    Whois Direct | DNS Crawler | NS Trace | Compare Free DNS Hosts

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