We help IT Professionals succeed at work.

Check out our new AWS podcast with Certified Expert, Phil Phillips! Listen to "How to Execute a Seamless AWS Migration" on EE or on your favorite podcast platform. Listen Now

x

Securing Win2k Network - DHCP

Medium Priority
485 Views
Last Modified: 2010-03-18
I want to limit network access to only computers that have domain accounts (Win2k Active Directory, Win2k DHCP).  I know it's probably simple but I can't seem seem to find it.

Thanks.
Comment
Watch Question

Technical Architect
CERTIFIED EXPERT
Distinguished Expert 2019
Commented:
Unlock this solution and get a sample of our free trial.
(No credit card required)
UNLOCK SOLUTION

Author

Commented:
Your kidding me right?   :(

You mean to say that anyone can walk in here, plug in their personal pc/laptop and spread all the crap from their home computers all over our network?  I just thought I was having a problem searching because I can't find anything either.

This is bad news...


Pete LongTechnical Architect
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
It is indeed this has been asked here many times, and a lot of casual questioners have been and abandoned the question because of it :(
Pete is correect.  While DHCP has the benefit of reducing administrator intervention, it has the drawback of security problems.  The only way around it is to create DHCP reservations that, as Pete stated, would require you to copy down every single MAC address on the network, and individually reserve them their respective addresses.  Other than that, you could eliminate DHCP and go with a static assigned addresses.

You can read more about it here:

http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/proddocs/en-us/Default.asp?url=/resources/documentation/WindowsServ/2003/standard/proddocs/en-us/sag_dhcp_ovr_security.asp

DHCP is an unauthenticated protocol, even in the latest flavor, Windows Server 2003.  You have few options here.

James
Gareth GudgerSolution Architect
CERTIFIED EXPERT
Most Valuable Expert 2014
Top Expert 2014

Commented:
Yea it kind of sucks.

I think Microsoft was almost thinking about it when they created the user and vendor classes in DHCP but never took it far enough. :)

Author

Commented:
Ok.  Thanks guys.

This is obviuosly not the answer I was looking for but I'll contemplate your suggestions.  It's not like we have 100s of workstations, we are just under 100, but....

Unfortunately...we all feel your pain.  :)  Most of us have tried to find the answer to the same question at one point or another.
Pete LongTechnical Architect
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
ditto :(

ThanQ
Rich RumbleSecurity Samurai
CERTIFIED EXPERT
Top Expert 2006

Commented:
A little update I've just researched- havent set it up/tested it yet but the 802.1x standard looks to be able to help in this situation:
http://www.microsoft.com/windows2000/server/evaluation/news/bulletins/8021xclient.asp
http://cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a00800da6ff.html#wp1025060
http://support.microsoft.com/kb/q303597/

Just popped in my head to share the info- i'll get a page up when I've tested this thoroghly
-rich
Pete LongTechnical Architect
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
cheers rich Ive stuck it on my list of things to look at :)
Unlock the solution to this question.
Thanks for using Experts Exchange.

Please provide your email to receive a sample view!

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.