Solved

DHCP

Posted on 2011-02-11
9
408 Views
Last Modified: 2012-08-14
Hi Experts,

                     I have a doubt related to Authorize option in DHCP. It can be used when DHCP is running in the Domain environment. What this Authorize option does.
0
Comment
Question by:columbuseng
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 3

Expert Comment

by:Rdsterling
ID: 34869781
When a DHCP server is authorised, then it means that it is authorised to give out DHCP addresses. The DHCP server would have to be a membert of the domain in a Windows environment.
0
 
LVL 6

Accepted Solution

by:
ChiefoftheChiss earned 167 total points
ID: 34869786
It seems you are asking why you would want to do this?
mainly:
The Windows Server 2003 family provides integrated security support for networks that use Active Directory. This support adds and uses a class of objects that is part of the base directory schema, providing the following enhancements:

A list of IP addresses available for the computers that you authorize to operate as DHCP servers on your network.

Detection of unauthorized DHCP servers and prevention of their starting or running on your network.


Above pulled from here:
http://technet.microsoft.com/en-us/library/cc781697(WS.10).aspx
0
 
LVL 39

Assisted Solution

by:Krzysztof Pytko
Krzysztof Pytko earned 333 total points
ID: 34869843
To prevent rogue DHCP servers in your domain environment. But unfortunately it works only for Windows-based DHCP servers. You need to be an Enterprise Administrators group member or DHCP Administrators group member to be able to authorize DHCP server.

Then DHCP server will be able to issue DHCP leases to hosts within your network.

Regards,
Krzysztof
0
Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

 
LVL 39

Assisted Solution

by:Krzysztof Pytko
Krzysztof Pytko earned 333 total points
ID: 34869862
and one more (useful) thing. If you wish (as Enterprise Administrator) to check how many and what servers are DHCP in your domain, open AD Sites and Services console, select root node and from menu choose "Show Services Node". Then under Services node in "NetServices" you will see full DHCP server list :)

Krzysztof
0
 

Author Comment

by:columbuseng
ID: 34869911
In windows based environment, If DHCP is not authorized by AD whether the DHCP server will provide IP to clients or not .
0
 
LVL 39

Expert Comment

by:Krzysztof Pytko
ID: 34869919
If it is a domain environment, no. If DHCP server is a domain member and it's not authorized, it won't be able to issue any DHCP leases.

Krzysztof
0
 

Author Comment

by:columbuseng
ID: 34869930
Hi iSiek,

                    Im having a doubt that if DHCP is authorized by AD. Whether DHCP related files or objects will store in AD.
0
 
LVL 39

Expert Comment

by:Krzysztof Pytko
ID: 34869948
Hi,

open DHCP console and specify server which you want to check.
If it has red down arrow, it's not authorized.
If it has green up arrow, it's authorized.

and remember. After DHCP server is authorized, each scope must be also activated :)

Krzysztof
0
 
LVL 39

Expert Comment

by:Krzysztof Pytko
ID: 34869958
oh, and another simple and quick way is to use NETSH command with DHCP context :) But DHCP context is available only in NETSH on server.

Log on to any windows server and from command-line type:

netsh dhcp show server

it will list all authorized DHCP servers in a domain

Krzysztof
0

Featured Post

Turn Insights Into Action

You’ve already invested in ITSM tools, chat applications, automation utilities, and more. Fortify these solutions with intelligent communications so you can drive business processes forward.

With xMatters, you'll never miss a beat.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Occasionally you run into the website or two that will not resolve properly using your own DNS servers.  Some people simply set up global forwarders for their DNS server.  I don’t recommend doing this because it can cause problems resolving addresse…
Resolve DNS query failed errors for Exchange
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

691 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