diff --git a/proxy/generate_selfsigned_cert.sh b/proxy/generate_selfsigned_cert.sh
new file mode 100644
index 00000000..f0221c1e
--- /dev/null
+++ b/proxy/generate_selfsigned_cert.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -sha256 -days 3650 -nodes \
+ -subj "/C=XX/ST=Bayern/L=Musterstadt/O=Organisation/OU=Development/CN=SelfSigned" \
+ -addext "subjectAltName=DNS:*.example.com"
\ No newline at end of file