add basic testing readme

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

internal/outpost/radius/eap/README.md

@@ -0,0 +1,44 @@
+# EAP protocol implementation
+
+Install `eapol_test` (`sudo apt install eapoltest`)
+
+Both PEAP and EAP-TLS require a minimal PKI setup. A CA, a certificate for the server and for EAP-TLS a client certificate need to be provided.
+
+Save either of the config files below and run eapoltest like so:
+
+```
+# peap.conf is the config file under the PEAP testing section
+# foo is the shared RADIUS secret
+# 1.2.3.4 is the IP of the RADIUS server
+eapol_test -c peap.conf -s foo -a 1.2.3.4
+```
+
+### PEAP testing
+
+```
+network={
+    ssid="DoesNotMatterForThisTest"
+    key_mgmt=WPA-EAP
+    eap=PEAP
+    identity="foo"
+    password="bar"
+    ca_cert="ca.pem"
+    phase2="eapauth=MSCHAPV2"
+}
+```
+
+### EAP-TLS testing
+
+```
+network={
+    ssid="DoesNotMatterForThisTest"
+    key_mgmt=WPA-EAP
+    eap=TLS
+    identity="foo"
+    ca_cert="ca.pem"
+    client_cert="cert_client.pem"
+    private_key="cert_client.key"
+    eapol_flags=3
+    eap_workaround=0
+}
+```