diff --git a/inventories/chaosknoten/host_vars/public-reverse-proxy.yaml b/inventories/chaosknoten/host_vars/public-reverse-proxy.yaml
new file mode 100644
index 0000000..a2ee48a
--- /dev/null
+++ b/inventories/chaosknoten/host_vars/public-reverse-proxy.yaml
@@ -0,0 +1,8 @@
+nginx__version_spec: ""
+nginx__deploy_redirect_conf: false
+nginx__configurations:
+  - name: acme_challenge
+    content: "{{ lookup('ansible.builtin.file', 'chaosknoten/configs/public-reverse-proxy/nginx/acme_challenge.conf') }}"
+nginx__use_custom_nginx_conf: true
+nginx__custom_nginx_conf: |
+  {{ lookup('file', 'chaosknoten/configs/public-reverse-proxy/nginx/nginx.conf') }}
diff --git a/inventories/chaosknoten/hosts.yaml b/inventories/chaosknoten/hosts.yaml
new file mode 100644
index 0000000..1046b88
--- /dev/null
+++ b/inventories/chaosknoten/hosts.yaml
@@ -0,0 +1,14 @@
+all:
+  children:
+    debian_12:
+      hosts:
+        public-reverse-proxy:
+          ansible_host: public-reverse-proxy.hamburg.ccc.de
+          ansible_port: 42666
+          ansible_user: chaos
+    nginx_hosts:
+      hosts:
+        public-reverse-proxy:
+    public_reverse_proxy_hosts:
+      hosts:
+        public-reverse-proxy:
diff --git a/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/acme_challenge.conf b/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/acme_challenge.conf
new file mode 100644
index 0000000..1cd1fa3
--- /dev/null
+++ b/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/acme_challenge.conf
@@ -0,0 +1,25 @@
+map $host $upstream_acme_challenge_host {
+    # Something like this should be here at some point:
+    # aes.ccchh.net 10.31.206.14:31820;
+    default "";
+}
+
+server {
+    listen 80 default_server;
+
+    location /.well-known/acme-challenge/ {
+        proxy_pass http://$upstream_acme_challenge_host;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        # This is http in any case.
+        proxy_set_header X-Forwarded-Proto http;
+    }
+
+    # Better safe than sorry.
+    # Don't do a permanent redirect to avoid acme challenge pain (even tho 443
+    # still should work).
+    location / {
+        return 307 https://$host$request_uri;
+    }
+}
diff --git a/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/nginx.conf b/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/nginx.conf
new file mode 100644
index 0000000..ecffdec
--- /dev/null
+++ b/playbooks/files/chaosknoten/configs/public-reverse-proxy/nginx/nginx.conf
@@ -0,0 +1,50 @@
+# This config is based on the standard `nginx.conf` shipping with the stable
+# nginx package from the NGINX mirrors as of 2023-01.
+
+user  nginx;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+# Listen on port 443 as a reverse proxy and use PROXY Protocol for the
+# upstreams.
+stream {
+    map $ssl_preread_server_name $address {
+        # Something like this should be here at some point:
+        # aes.ccchh.net 10.31.206.14:8443;
+    }
+
+    server {
+        listen 0.0.0.0:443;
+        proxy_pass $address;
+        ssl_preread on;
+        proxy_protocol on;
+    }
+}
+
+# Still have the default http block, so the `acme_challenge.conf` works.
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    keepalive_timeout  65;
+
+    #gzip  on;
+
+    include /etc/nginx/conf.d/*.conf;
+}