Solved

preventing unauthorized users from picking up IP addresses from the DHCP server

Posted on 2003-12-10
5
507 Views
Last Modified: 2010-03-18
Is there a way to prevent unauthorized users from plugging into a network where DHCP is enabled and picking up and IP and then accessing the internet?
0
Comment
Question by:tsgtsimms
5 Comments
 
LVL 41

Accepted Solution

by:
stevenlewis earned 125 total points
ID: 9917515
aside from physically securing your network (don't allow access to your connecting points, ie: wall jacks, hubs/routers/switches, etc) not really. Not with M$ dhcp. I think you mean by restricting to MAC addresses?
then No
0
 
LVL 4

Assisted Solution

by:Roly_Dee
Roly_Dee earned 125 total points
ID: 9919733
In the default setup of MS DHCP, there is no way to stop anyone picking up an IP address.The only way to restrict this is to reserve IP addresses by MAC address: this is a big headache to maintain!

IMO The best solution would be to employ some kind of proxy server (e.g. ISA server), which would authenticate users before granting them Internet access. However, this will not stop unauthorised visitors from accessing your internal network: are you worried about this?

Let us know more about your environment, and we can give more details.
0
 
LVL 3

Expert Comment

by:peter_fleur
ID: 9923852
You can select which nic you want the DHCP server active on. If you have a wan adapter and a lan adapter than you could disable the dhcp server on the wan adapter.

Do you have 2 nics?

Peter
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

FIPS stands for the Federal Information Processing Standardisation and FIPS 140-2 is a collection of standards that are generically associated with hardware and software cryptography. In most cases, people can refer to this as the method of encrypti…
A common practice in small networks is making file sharing easy which works extremely well when intra-network security is not an issue. In essence, everyone, that is "Everyone", is given access to all of the shared files - often the entire C: drive …
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…

920 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

15 Experts available now in Live!

Get 1:1 Help Now