Help for buy a real Cert (not self-signed)

[Spider s]

Hello, I have got a few questions about radius and buy an original
Certificate.

Firsts thank you for the help here, but I can’t find an option for search
on all post, is this possible ?? only find this:

For example only can find post from this mount

http://lists.freeradius.org/pipermail/freeradius-users/2017-January/thread.html

Is for don’t disturb with my questions is are answered, sorry.

And now my questions, first I have got running my freeradius installation
3.10 on ubuntu) with AD Auth, but with limitations, because I need install
my self-signed cert on all device for connect to wifi.

I don’t want this (I don’t want install the certs), and I need buy a real
cert for a real CA, I know ,but I never buy one for this. (I never buy a
certfor radius, web or similar)

I need buy a real cert, where I can buy ?? recommendations webs??

And witch type ??  I see a lot of certs, and I don’t know the certification
specification.( a lot of prices and options) Please a direct links if
possible to correct cert.

I never buy an original cert and I don’t know process. When I receive the
certificates is like certs on the folder?? Need change data??? How can use
this certs on my radius install?? Are 3, 5, 20 files ???? where i can find
info about this ?? (On docs i reffer)

Need a domain for this ?? can i use the cert from a Web (typical ssl cert
that is used for web??

I see a lot of info on internet for use self-signed cert, but I can’t find
info on documentations or on my Ubuntu install when use real certs. (Is
very  possible I don’t find)



Thank you for your time when you read me, and sorry if a newbie questions.


Thank you in advanced, i dont want confuse with this and spend money with
this.