diff --git a/conf/nginx.conf b/conf/nginx.conf
index e8aea12..b5c6a65 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -4,7 +4,7 @@ location / {
   proxy_set_header        Host            $http_host;
   proxy_set_header        X-NginX-Proxy  true;
 
-  proxy_pass             http://localhost:9220;
+  proxy_pass             http://localhost:__WEB_ADMIN_PORT__;
   proxy_redirect          off;
 
   # Socket.io support
@@ -18,18 +18,18 @@ location / {
   access_by_lua_file /usr/share/ssowat/access.lua;
 
   location ~ \.(js|css|woff|woff2|ttf|png) {
-    proxy_pass http://localhost:9220;
+    proxy_pass http://localhost:__WEB_ADMIN_PORT__;
   }
 
   location ~ /webmin {
-    proxy_pass http://localhost:9220$uri;
+    proxy_pass http://localhost:__WEB_ADMIN_PORT__$uri;
   }
 
   location ~ ^/bma(.*)$ {
-    proxy_pass http://localhost:__PORT__$1$is_args$args;
+    proxy_pass http://localhost:__LOCAL_BMA_PORT__$1$is_args$args;
   }
 
   location /ws2p {
-    proxy_pass http://localhost:20901;
+    proxy_pass http://localhost:__LOCAL_WS2P_PORT__;
   }
 }
diff --git a/scripts/install b/scripts/install
index 893cac7..57ea87e 100644
--- a/scripts/install
+++ b/scripts/install
@@ -48,13 +48,19 @@ ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
 
 #=================================================
-# FIND AND OPEN A PORT
+# FIND AVAILABLE PORTS
 #=================================================
-ynh_script_progression --message="Finding an available port…"
+ynh_script_progression --message="Finding available ports…"
 
-# Find an available port
-port=$(ynh_find_port --port=10901)
-ynh_app_setting_set --app=$app --key=port --value=$port
+# Find available ports
+local_bma_port=$(ynh_find_port --port=10901)
+ynh_app_setting_set --app=$app --key=local_bma_port --value=$local_bma_port
+
+local_ws2p_port=$(ynh_find_port --port=20901)
+ynh_app_setting_set --app=$app --key=local_ws2p_port --value=$local_ws2p_port
+
+web_admin_port=$(ynh_find_port --port=9220)
+ynh_app_setting_set --app=$app --key=web_admin_port --value=$web_admin_port
 
 #=================================================
 # CREATE DEDICATED USER
@@ -103,8 +109,8 @@ chown -R $app:www-data "$datadir"
 #=================================================
 ynh_script_progression --message="Adding a configuration file…"
 
-ynh_exec_as duniter duniter config --bma --ipv4 127.0.0.1 --port $port --remoteh $domain --remotep 443 --noupnp
-ynh_exec_as duniter duniter config --ws2p-host 127.0.0.1 --ws2p-port 20901 --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
+ynh_exec_as duniter duniter config --bma --ipv4 127.0.0.1 --port $bma_local_port --remoteh $domain --remotep 443 --noupnp
+ynh_exec_as duniter duniter config --ws2p-host 127.0.0.1 --ws2p-port $ws2p_local_port --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
 
 #=================================================
 # SETUP SYSTEMD
diff --git a/scripts/remove b/scripts/remove
index a4cca63..b7aa37f 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -17,7 +17,6 @@ ynh_script_progression --message="Loading installation settings…"
 app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
-port=$(ynh_app_setting_get --app=$app --key=port)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index dc13cb5..a1370fa 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -30,7 +30,8 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-port=$(ynh_app_setting_get --app=$app --key=port)
+local_bma_port=$(ynh_app_setting_get --app=$app --key=local_bma_port)
+local_ws2p_port=$(ynh_app_setting_get --app=$app --key=local_ws2p_port)
 architecture=$YNH_ARCH
 
 #=================================================
@@ -80,8 +81,8 @@ ynh_exec_warn_less dpkg -i $tempdir/duniter-server-v1.8.*-linux-*.deb
 #=================================================
 ynh_script_progression --message="Adding a configuration file…"
 
-ynh_exec_as duniter duniter --home $datadir config --bma --ipv4 127.0.0.1 --port $port --remoteh $domain --remotep 443 --noupnp
-ynh_exec_as duniter duniter --home $datadir config --ws2p-host 127.0.0.1 --ws2p-port 20901 --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
+ynh_exec_as duniter duniter --home $datadir config --bma --ipv4 127.0.0.1 --port $local_bma_port --remoteh $domain --remotep 443 --noupnp
+ynh_exec_as duniter duniter --home $datadir config --ws2p-host 127.0.0.1 --ws2p-port $local_ws2p_port --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index 400d441..796fdd7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -20,7 +20,9 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 admin=$(ynh_app_setting_get --app=$app --key=admin)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-port=$(ynh_app_setting_get --app=$app --key=port)
+local_bma_port=$(ynh_app_setting_get --app=$app --key=local_bma_port)
+local_ws2p_port=$(ynh_app_setting_get --app=$app --key=local_ws2p_port)
+webadmin_port=$(ynh_app_setting_get --app=$app --key=webadmin_port)
 architecture=$YNH_ARCH
 
 #=================================================
@@ -113,8 +115,8 @@ fi
 #=================================================
 ynh_script_progression --message="Updating a configuration file…"
 
-ynh_exec_as duniter duniter config --bma --ipv4 127.0.0.1 --port $port --remoteh $domain --remotep 443 --noupnp
-ynh_exec_as duniter duniter config --ws2p-host 127.0.0.1 --ws2p-port 20901 --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
+ynh_exec_as duniter duniter config --bma --ipv4 127.0.0.1 --port $local_bmaport --remoteh $domain --remotep 443 --noupnp
+ynh_exec_as duniter duniter config --ws2p-host 127.0.0.1 --ws2p-port $local_ws2p_port --ws2p-remote-host $domain --ws2p-remote-port 443 --ws2p-remote-path "/ws2p" --ws2p-noupnp
 
 #=================================================
 # SETUP SYSTEMD