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EAP/TLS authentication Issue

I have several Aironet 1100 AP's which are configure to use EAP/TLS to authenticate against a Cisco ACS server.

We are using Aironet 350 pcmcia cards. This setup had been working up until friday when we moved the ACS server to a new IP address. Since then if I try to connect using the Cisco software bundled with the 350 pcmcia card it fails authentication. If I use the windows wireless config it works perfectly. Unfortuantley most of the pcs are running win 2000 so I need to get the cisco software working again.

In ACS failed Auth logs I get the following message "Invalid message authenticator in EAP request" but from the other AP's I see nothing in the logs.

I have checked the keys are correct and the user certificate is ok as I can connect using the inbuilt Win XP config util.

I'm at a bit of a loss as to what to do next.

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Re: EAP/TLS authentication Issue

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