diff --git a/README.md b/README.md
index ec353b5..221817c 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,20 @@
 
 Docker container to maintain and update the NAT-PMP/UPnP forwarded port to qBittorrent.
 
-Tested with Gluetun using ProtonVPN (Wireguard) and qBittorrent, it assumes that on the VPN container there's the following rules:
-
-```console
-# cat iptables/post-rules.txt
-iptables -A INPUT -i tun0 -s 0.0.0.0/0 -d 0.0.0.0/0 -p tcp --dport 10000:65535 -j ACCEPT
-iptables -A INPUT -i tun0 -s 0.0.0.0/0 -d 0.0.0.0/0 -p udp --dport 10000:65535 -j ACCEPT
-```
+Tested with Gluetun using ProtonVPN (Wireguard) and qBittorrent.
 
 This solution can probably need a few tweaks and error handling, also some work in opening only the needed port on the VPN container.
+
+In the repo a sample docker-compose.yml can be found.
+
+The following variables can be set:
+
+- QBITTORRENT_SERVER    (Default: <not set>)*
+- QBITTORRENT_PORT      (Default: 8080)
+- QBITTORRENT_USER      (Default: admin)
+- QBITTORRENT_PASS      (Default: adminadmin)
+- VPN_CT_NAME           (Default: gluetun)
+- VPN_IF_NAME           (Default: tun0)
+- VPN_GATEWAY*          (Default: <not set>)*
+- CHECK_INTERVAL        (Default: 300s)
+- NAT_LEASE_TIME        (Default: 300s)