ACS RADIUS 4.2 - wireless - certificates

I set up our ACS server 4.2 to GANYMEDE and also to provide RADIUS authentication for our WLAN and eventually will use for authentication 802. 1 x for the local network.

I'm not an expert on the certificates. I called TAC for assistance to install the certificate self-signed on ACS. This allowed me to build and test my WLan. Now that I'm close to the point to go live with it, I would install a certificate that will expire in 1 year.

How many people do that? We have a windows 2003 server that is under the authority of certification for other services. Should I do something with this? And how to get these certifactes deployed on the clients most of the people? by GPO?

Clearly, I'm not very familiar with the certificates and I apologize for this, but read about them becomes a source of confusion, if someone could point me in the right direction that would be a great help! Thank you!

Edit: I should mention that I've been using PEAP with the self-signed certificate. And currently manually install the certificate on my test clients. As it is right now everytihng on my WiFi works fine: authentication, assignment of VLANs, etc.. I'm just confused on best practices for the certificate.

ACS can provide valid for a year. Using Microsoft CA you configure for 5... 6... 7 years, according to your need.

It is easy to handle and manage via GPO.

Two scenarios of PEAP,

Using the Protocol peap without validating server verified---> easy to deploy that cert is required only on ACS.

Using the PEAP Protocol with validate server verified---> cert CA needs every customer.

You can also get the CERT from providers such as Entrust, Equifax, Verisign, GeoTrust etc. The advantage with these certificates is that we do not have to install CA on each client as it is installed by default on each operating system.

Hope that helps!

Kind regards

~ JG

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Tags: Cisco Security

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