diff --git a/tools/captiveportal.pgsql b/tools/captiveportal.pgsql
new file mode 100644
index 0000000..3844855
--- /dev/null
+++ b/tools/captiveportal.pgsql
@@ -0,0 +1,13 @@
+create type if not exists inet_protocol as enum ('tcp', 'udp');
+
+create table if not exists client (
+client_id uuid NOT NULL primary key unique,
+created timestamp NOT NULL,
+ip_address inet NOT NULL,
+"protocol" inet_protocol NOT NULL,
+enabled boolean NOT NULL,
+last_packets bigint default 0,
+last_activity timestamp
+);
+
+create index if not exists client_ip_address_index on client (ip_address);