diff --git a/Dockerfile b/Dockerfile
index 113020e2..876f50c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,6 +31,7 @@ ENV USER= \
     UNBLOCK= \
     EXTRA_SUBNETS= \
     PORT_FORWARDING=false \
+    PORT_FORWARDING_STATUS_FILE="/forwarded_port" \
     PROXY=on \
     PROXY_LOG_LEVEL=Critical \
     PROXY_PORT=8888 \
diff --git a/README.md b/README.md
index 2fe3b694..e4005c0a 100644
--- a/README.md
+++ b/README.md
@@ -157,6 +157,7 @@ docker run --rm --network=container:pia alpine:3.10 wget -qO- https://ipinfo.io
 | `UNBLOCK` | | comma separated string (i.e. `web.com,web2.ca`) to unblock hostnames |
 | `EXTRA_SUBNETS` | | comma separated subnets allowed in the container firewall (i.e. `192.168.1.0/24,192.168.10.121,10.0.0.5/28`) |
 | `PORT_FORWARDING` | false | Set to `true` to read the forwarded port |
+| `PORT_FORWARDING_STATUS_FILE` | /forwarded_port | Set to the file where you want to write the forwarded port |
 | `PROXY` | `on` | `on` or `off`, to switch the internal HTTP proxy |
 | `PROXY_LOG_LEVEL` | `Critical` | `Info`, `Warning`, `Error` or `Critical` |
 | `PROXY_PORT` | `8888` | `1024` to `65535` internal port for HTTP proxy |
@@ -240,7 +241,7 @@ There are various ways to achieve this, depending on your use case.
 
 ## Port forwarding
 
-By setting `PORT_FORWARDING` environment variable to `true`, the forwarded port will be read and written to `/forwarded_port`.
+By setting `PORT_FORWARDING` environment variable to `true`, the forwarded port will be read and written to the file specified in `PORT_FORWARDING_STATUS_FILE` (by default, this is set to `/forwarded_port`). If the location for this file does not exist, it will be created automatically.
 
 You can mount this file as a volume to read it from other containers.
 
diff --git a/portforward.sh b/portforward.sh
index b45a0a5d..c1a40efa 100644
--- a/portforward.sh
+++ b/portforward.sh
@@ -20,9 +20,12 @@ if [ "$json" == "" ]; then
   exit 1
 fi
 port=`echo $json | jq .port`
-port_file="/forwarded_port"
-echo "$port" > $port_file
-printf " * Written forwarded port to $port_file\n"
+port_status_folder=`dirname "${PORT_FORWARDING_STATUS_FILE}"`
+if [ ! -d "${port_status_folder}" ];
+  mkdir -p "${port_status_folder}"
+fi
+echo "$port" > "${PORT_FORWARDING_STATUS_FILE}"
+printf " * Written forwarded port to ${PORT_FORWARDING_STATUS_FILE}\n"
 ip=`wget -qO- https://diagnostic.opendns.com/myip`
 exitOnError $? "Unable to read remote VPN IP"
 printf " * Forwarded port is $port on remote VPN IP $ip\n"