diff --git a/podman-matrix/10_install.sh b/podman-matrix/10_install.sh
index 8620514..9f194a4 100755
--- a/podman-matrix/10_install.sh
+++ b/podman-matrix/10_install.sh
@@ -20,7 +20,7 @@ if ! podman volume exists ${dbvolume} ; then
     exit 1
 fi
 
-podman pod create --publish ${listen_if}:8086:8008 --name ${pod_name} && \
+podman pod create --publish ${listen_if}:${listen_port}:8008 --name ${pod_name} && \
 podman run -d --name ${db_container_name} --pod ${pod_name} \
   --mount type=volume,src=${dbvolume},dst=/var/lib/postgresql/data/ \
   -e POSTGRES_PASSWORD=${GARBAYE_MATRIX_POSTGRES_PASSWORD} \
diff --git a/podman-matrix/vars.sh b/podman-matrix/vars.sh
index 31a89ee..4018b19 100644
--- a/podman-matrix/vars.sh
+++ b/podman-matrix/vars.sh
@@ -12,7 +12,8 @@ confvolume='matrixdotorg_synapse-data'
 dbvolume='matrixdotorg_synapse-pgsql'
 container_name='synapse'
 db_container_name='synapse-db'
-listen_if='127.0.0.1'
+listen_if="${GARBAYE_MATRIX_ENV_LISTENIF:-127.0.0.1}"
+listen_port="${GARBAYE_MATRIX_ENV_LISTENPORT:-8086}"
 GARBAYE_MATRIX_DOMAIN="${GARBAYE_MATRIX_DOMAIN:-garbaye.fr}"
 GARBAYE_MATRIX_URL="${GARBAYE_MATRIX_URL:-https://matrix.garbaye.fr}"
 envvars='GARBAYE_MATRIX_POSTGRES_PASSWORD GARBAYE_MATRIX_DOMAIN GARBAYE_MATRIX_URL'