NPS Authentication

Hi,

I have a Windows 2008 server which I am intergrating into our network and

now want it to handle RADIUS Authentication with our Sonicwall firewall as

its client.

I have follwed the instructions on the following site:

http://bunkerhollow.com/blogs/matt/archive...entication.aspx

I have also changed the IP address on the Sonicwall but when I try to do a

test I get the message Authentication Failed.

Can anyone help?

Thanks

Anthony