Solved

CA Server Issue - CAS Crashed/RADIUS Errors

Posted on 2012-03-11
3
646 Views
Last Modified: 2012-03-13
Hi Guys

I've run into a bit of an issue, my CA server crashed (No backup!)  a while back and I thought there wouldn't be any issues, but a few days back the certificate on the PDC expired and now any user trying to connect to the wireless is unable too, due to the RADIUS. It seems that because the certificate expired the RADIUS server has stopped working.

Any idea what the best solution is to get the wireless working again?
Setting up another CA?
Setting up a self signed certificate (using IIS) for the RADIUS?
If I do not setup another CA will there be any further consequences? All servers have been popping up auto enrollment certificate errors.

Any feedback will be great. Thanks!
0
Comment
Question by:YOlanie_Visser
  • 2
3 Comments
 
LVL 26

Accepted Solution

by:
Leon Fester earned 500 total points
ID: 37706922
It's hard to rebuild a CA, especially if you didn't back it up properly.
A self signed cert does not offer the same solutions as a CA would and you'd probably get some issues because the CRL cannot be completed.

I'd suggest deleting the OLD CA information, and then rebuild your CA and you can then reissues your certs the "normal" way.

This is what you needed to do before the CA fell over.
http://blogs.technet.com/b/pki/archive/2010/04/20/disaster-recovery-procedures-for-the-active-directory-certificate-services-adcs.aspx

These are the instructions you're looking for:
Basically, remove broken CA.
Install new CA.
Re-issue certs, your Servers should automatically enroll once the CA is present, so possibly only your RADIUS server may need a manual re-issue.

You should start with removing the decommissioned CA from your domain.
http://support.microsoft.com/kb/889250

Have a read about CA's and decide if you still don't need it.
http://www.kurtdillard.com/StudyGuides/70-640/6.html

How to install a CA
http://technet.microsoft.com/en-us/library/aa998956(v=exchg.65).aspx
0
 

Author Comment

by:YOlanie_Visser
ID: 37714191
dvt_localboy

I'm in the process of doing the cleanup, any idea how I will work around the RADIUS issue? Could I use a self signed cert just for the RADIUS? That would be the only reason why I would setup another CA,,,
0
 
LVL 26

Expert Comment

by:Leon Fester
ID: 37714633
No a self signed certificate in the Radius server won't help you.
The simple reason: the Certificate Authority for that self signed certificate will not be found.

You also need to remember that the basis of PKI is that there is always an Authority that can verify a the validity of a certificate. Have a look at a valid certificate and check out the Certificate Path....it's needed for establishing if your Certificate is valid.
http://technet.microsoft.com/en-us/library/cc731853.aspx

Reasons for installing a CA
http://technet.microsoft.com/en-us/library/cc776679(v=ws.10).aspx

Additional reading that may interest you:
http://social.technet.microsoft.com/wiki/contents/articles/987.windows-pki-documentation-reference-and-library.aspx
http://technet.microsoft.com/en-us/library/cc772670(v=ws.10).aspx
http://www.trainsignal.com/blog/active-directory-certificate-services
0

Featured Post

Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

Question has a verified solution.

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

by Batuhan Cetin In this article I will be guiding through the process of removing a failed DC metadata from Active Directory (hereafter, AD) using the ntdsutil tool in a Windows Server 2003 environment. These steps are not necessary in a Win…
I've always wanted to allow a user to have a printer no matter where they login. The steps below will show you how to achieve just that. In this Article I'll show how to deploy printers automatically with group policy and then using security fil…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…
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, fr…

864 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

23 Experts available now in Live!

Get 1:1 Help Now