diff --git a/plugins/UiConfig/media/js/ConfigStorage.coffee b/plugins/UiConfig/media/js/ConfigStorage.coffee
index bdde0d93..9bc1e2f7 100644
--- a/plugins/UiConfig/media/js/ConfigStorage.coffee
+++ b/plugins/UiConfig/media/js/ConfigStorage.coffee
@@ -62,6 +62,13 @@ class ConfigStorage extends Class
 			valid_pattern: /[0-9]*/
 			description: "Other peers will use this port to reach your served sites. (default: 15441)"
 
+		section.items.push
+			key: "ip_external"
+			title: "File server external ip"
+			type: "textarea"
+			placeholder: "Detect automatically"
+			description: "Your file server is accessible on these ips. (default: detect automatically)"
+
 		section.items.push
 			title: "Tor"
 			key: "tor"
@@ -139,4 +146,4 @@ class ConfigStorage extends Class
 		@items.push(section)
 		return section
 
-window.ConfigStorage = ConfigStorage
+window.ConfigStorage = ConfigStorage
\ No newline at end of file
diff --git a/plugins/UiConfig/media/js/ConfigView.coffee b/plugins/UiConfig/media/js/ConfigView.coffee
index 77a63c64..a110a17d 100644
--- a/plugins/UiConfig/media/js/ConfigView.coffee
+++ b/plugins/UiConfig/media/js/ConfigView.coffee
@@ -104,7 +104,8 @@ class ConfigView extends Class
 		if not value
 			value = ""
 		h("textarea.input-#{item.type}.input-text",{
-			type: item.type, config_key: item.key, oninput: @handleInputChange, afterCreate: @autosizeTextarea, updateAnimation: @autosizeTextarea, value: value
+			type: item.type, config_key: item.key, oninput: @handleInputChange, afterCreate: @autosizeTextarea,
+			updateAnimation: @autosizeTextarea, value: value, placeholder: item.placeholder
 		})
 
 	renderValueCheckbox: (item) =>
diff --git a/plugins/UiConfig/media/js/all.js b/plugins/UiConfig/media/js/all.js
index d745845e..03e012b3 100644
--- a/plugins/UiConfig/media/js/all.js
+++ b/plugins/UiConfig/media/js/all.js
@@ -1379,6 +1379,13 @@
         valid_pattern: /[0-9]*/,
         description: "Other peers will use this port to reach your served sites. (default: 15441)"
       });
+      section.items.push({
+        key: "ip_external",
+        title: "File server external ip",
+        type: "textarea",
+        placeholder: "Detect automatically",
+        description: "Your file server is accessible on these ips. (default: detect automatically)"
+      });
       section.items.push({
         title: "Tor",
         key: "tor",
@@ -1650,7 +1657,8 @@
         oninput: this.handleInputChange,
         afterCreate: this.autosizeTextarea,
         updateAnimation: this.autosizeTextarea,
-        value: value
+        value: value,
+        placeholder: item.placeholder
       });
     };
 
@@ -1927,4 +1935,4 @@
 
   window.Page.createProjector();
 
-}).call(this);
+}).call(this);
\ No newline at end of file
diff --git a/src/Config.py b/src/Config.py
index a1a7133f..d78a4d95 100644
--- a/src/Config.py
+++ b/src/Config.py
@@ -20,7 +20,7 @@ class Config(object):
         self.need_restart = False
         self.keys_api_change_allowed = set([
             "tor", "fileserver_port", "language", "tor_use_bridges", "trackers_proxy", "trackers",
-            "trackers_file", "open_browser", "log_level", "fileserver_ip_type"
+            "trackers_file", "open_browser", "log_level", "fileserver_ip_type", "ip_external"
         ])
         self.keys_restart_need = set(["tor", "fileserver_port", "fileserver_ip_type"])
         self.start_dir = self.getStartDir()