diff --git a/ssl-certificate.sh b/ssl-certificate.sh
new file mode 100644
index 0000000..6ac9508
--- /dev/null
+++ b/ssl-certificate.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+# Carsten Rieger IT-Services
+# SSL-CERTIFICATE.SH
+# Version 1.0
+# April 20th, 2018
+function update_and_clean() {
+apt update
+apt upgrade -y
+apt autoclean -y
+apt autoremove -y
+}
+function restart_all_services() {
+/usr/sbin/service nginx restart
+/usr/sbin/service mysql restart
+/usr/sbin/service redis-server restart
+/usr/sbin/service php7.2-fpm restart
+}
+function clean4SSL() {
+cp /etc/nginx/conf.d/nextcloud.conf /etc/nginx/conf.d/nextcloud.conf.orig
+cp /etc/nginx/ssl.conf /etc/nginx/ssl.conf.orig
+cp /var/www/nextcloud/config/config.php /var/www/nextcloud/config/config.php.orig
+declare -l YOURSERVERNAME
+declare -l DYNDNSNAME
+YOURSERVERNAME=$(hostname)
+sed -i '/ssl-cert-snakeoil/d' /etc/nginx/ssl.conf
+sed -i "s/server_name.*;/server_name $DYNDNSNAME;/" /etc/nginx/conf.d/nextcloud.conf
+sed -in 's/YOUR.DEDYN.IO/'$DYNDNSNAME'/' /etc/nginx/ssl.conf
+sed -i s/\#\ssl/\ssl/g /etc/nginx/ssl.conf
+sed -i '$a#ssl_dhparam /etc/ssl/certs/dhparam.pem;' /etc/nginx/ssl.conf
+sudo -u www-data sed -in 's/'$YOURSERVERNAME'/'$DYNDNSNAME'/' /var/www/nextcloud/config/config.php
+}
+function errorSSL() {
+clear
+echo "*** ERROR while requeting your certificate(s) ***"
+echo ""
+echo "Verify that both ports (80 + 443) are forwarded to this server!"
+echo "And verify, your dyndns points to your IP either!"
+echo "Then retry..."
+}
+add-apt-repository ppa:certbot/certbot -y
+update_and_clean
+apt install letsencrypt -y
+read -p "Your domain: " DYNDNSNAME
+letsencrypt certonly -a webroot --webroot-path=/var/www/letsencrypt --rsa-key-size 4096 -d $DYNDNSNAME
+if [ ! -d "/etc/letsencrypt/live" ]; then
+errorSSL
+else
+clean4SSL
+restart_all_services
+clear
+echo "++++++++++++++++++++++++++++++++++++++++++++++++++++"
+echo ""
+echo " Call: https://$DYNDNSNAME and enjoy your Nextcloud"
+echo ""
+echo "++++++++++++++++++++++++++++++++++++++++++++++++++++"
+fi
+exit 0
\ No newline at end of file