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+It is a good idea to setup your own certificate authority for example to issue certificates for VPN/WiFi clients. Best way to do it is to use Easy RSA. Lets start by installing easy-rsa package:
+  # poldek -ivh easy-rsa
+Create directory for your CA, here we will keep it in ///root/CA//, but any path will do:
+  # mkdir /root/CA
+Copy Easy RSA to your directory, go to it and rename vars.example:
+  # cp -r /usr/share/easy-rsa/* /root/CA/
+  # cd /root/CA/
+  # mv vars.example vars
+Now we need to configure this CA. Edit vars file and uncomment/change options to fit your needs. We advice to change at least two of them:
+  set_var EASYRSA_KEY_SIZE 4096
+  set_var EASYRSA_DIGEST "sha512"
+This will set default key size to 4096 bytes and set crypto digest to sha512.
+We are ready to initialize PKI directory and build our CA:
+  # ./easy-rsa init-pki
+  # ./easy-rsa build-ca
+Now enter password for CA key and name of your CA. Thats all. Your own CA is ready to use. Lets create your first certificate request:
+  # ./easy-rsa gen-req your.server.com
+Enter password for certificate key and fill in certificate data. When done sign this request creating 'server' certificate:
+  # ./easy-rsa sign-req server your.server.com
+Follow on screen instructions and thats it.
+And here is example command to create wildcard certificate for your server:
+  # ./easyrsa --batch --req-cn=example.org gen-req example.org nopass
+  # ./easyrsa --batch --subject-alt-name='DNS:*.example.org,DNS:example.org' sign-req server example.org

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