diff --git a/Fail2Ban-Setup.md b/Fail2Ban-Setup.md
index 0162721..2c373c0 100644
--- a/Fail2Ban-Setup.md
+++ b/Fail2Ban-Setup.md
@@ -38,6 +38,23 @@ ignoreip = 127.0.0.1
 findtime = 14400
 ```
 
+### Testing
+
+#### Create a request with an invalid user
+
+```
+curl -u testerror:testerror http://localhost:5232/testerror
+```
+#### Check regular expression match
+
+```
+fail2ban-regex systemd-journal -m _SYSTEMD_UNIT=radicale.service /etc/fail2ban/filter.d/radicale.conf
+...
+lines: ... lines, ... ignored, 1 matched, ... missed
+...
+```
+
+
 
 ## Radicale behind reverse proxy