diff --git a/Gemfile b/Gemfile
index b02b1687..dd06d104 100644
--- a/Gemfile
+++ b/Gemfile
@@ -131,4 +131,4 @@ gem 'random_password'
 # Adds helpers for the Google reCAPTCHA API
 gem "recaptcha"
 
-gem 'i18n-language-mapping', '~> 0.1.0'
+gem 'i18n-language-mapping', '~> 0.1.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 451d84a9..97bbd336 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,7 +142,7 @@ GEM
     http_accept_language (2.1.1)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    i18n-language-mapping (0.1.0)
+    i18n-language-mapping (0.1.1)
     jaro_winkler (1.5.3)
     jbuilder (2.9.1)
       activesupport (>= 4.2.0)
@@ -364,7 +364,7 @@ DEPENDENCIES
   font-awesome-sass (~> 5.9.0)
   hiredis
   http_accept_language
-  i18n-language-mapping (~> 0.1.0)
+  i18n-language-mapping (~> 0.1.1)
   jbuilder (~> 2.5)
   jquery-rails (~> 4.3.3)
   jquery-ui-rails
diff --git a/app/controllers/concerns/joiner.rb b/app/controllers/concerns/joiner.rb
index 6b6e4622..6eaf4960 100644
--- a/app/controllers/concerns/joiner.rb
+++ b/app/controllers/concerns/joiner.rb
@@ -62,7 +62,8 @@ module Joiner
         redirect_to join_path(@room, current_user.name, opts, current_user.uid)
       else
         join_name = params[:join_name] || params[@room.invite_path][:join_name]
-        redirect_to join_path(@room, join_name, opts)
+
+        redirect_to join_path(@room, join_name, opts, fetch_guest_id)
       end
     else
       search_params = params[@room.invite_path] || params
@@ -114,5 +115,19 @@ module Joiner
     when "disabled"
       false
     end
+
+  private
+
+  def fetch_guest_id
+    return cookies[:guest_id] if cookies[:guest_id].present?
+
+    guest_id = "gl-guest-#{SecureRandom.hex(12)}"
+
+    cookies[:guest_id] = {
+      value: guest_id,
+      expires: 1.day.from_now
+    }
+
+    guest_id
   end
 end
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 33cfbf8a..2771cf5a 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -138,6 +138,7 @@ class SessionsController < ApplicationController
                                     'start_tls'
                                 end
     ldap_config[:base] = ENV['LDAP_BASE']
+    ldap_config[:filter] = ENV['LDAP_FILTER']
     ldap_config[:uid] = ENV['LDAP_UID']
 
     if params[:session][:username].blank? || session_params[:password].blank?
diff --git a/app/views/admins/components/_server_room_row.html.erb b/app/views/admins/components/_server_room_row.html.erb
index eaf6a083..f874452e 100644
--- a/app/views/admins/components/_server_room_row.html.erb
+++ b/app/views/admins/components/_server_room_row.html.erb
@@ -36,9 +36,9 @@
   <td class="text-left">
     <% running = room_is_running(room.bbb_id) %>
     <% if running %>
-      <%= t("administrator.rooms.running") %>
+      <%= t("administrator.rooms.table.running") %>
     <% else %>
-      <%= t("administrator.rooms.not_running") %>
+      <%= t("administrator.rooms.table.not_running") %>
     <% end %>
   </td>
   <td class="text-center">
@@ -48,7 +48,7 @@
       </a>
       <div class="dropdown-menu dropdown-menu-right">
         <%= link_to room_path(room), class: "dropdown-item" do %>
-          <i class="dropdown-icon far fa-eye"></i> <%= t("administrator.rooms.view") %>
+          <i class="dropdown-icon far fa-eye"></i> <%= t("administrator.rooms.table.view") %>
         <% end %>
         <%= button_to start_room_path(room), class: "dropdown-item", "data-disable": "" do %>
           <i class="dropdown-icon fas fa-door-open"></i> <%= running ? t("room.join") : t("room.start") %>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index bcf1cae3..de4d57be 100755
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -162,6 +162,7 @@ en:
         delete: Delete
         edit: Edit
         edit_roles: Edit the user roles
+        merge: Merge
         perm_delete: Permanently Delete
         unban: Unban User
         undelete: Undelete
diff --git a/config/locales/zh_CN.yml b/config/locales/zh_CN.yml
index 05b1c15b..8d15295d 100644
--- a/config/locales/zh_CN.yml
+++ b/config/locales/zh_CN.yml
@@ -42,6 +42,7 @@ zh_CN:
         info: 更改左上角显示的网站标志
         placeholder: 品牌形象URL地址
         title: 网站标志
+        invalid: 无效的URL
       cache:
         info: 清除缓存，强制新请求获取已更新的信息
         title: 清除网站缓存
@@ -426,7 +427,7 @@ zh_CN:
       visibility: 可见性
       formats: 格式
     visibility:
-      public: 公开
+      public: 公开的
       unlisted: 隐藏
     format:
       notes: 笔记
diff --git a/sample.env b/sample.env
index 668813c1..15dd119f 100644
--- a/sample.env
+++ b/sample.env
@@ -65,6 +65,7 @@ OAUTH2_REDIRECT=
 #   LDAP_BIND_DN=cn=admin,dc=example,dc=com
 #   LDAP_PASSWORD=password
 #   LDAP_ROLE_FIELD=ou
+#   LDAP_FILTER=(&(attr1=value1)(attr2=value2))
 LDAP_SERVER=
 LDAP_PORT=
 LDAP_METHOD=
@@ -74,6 +75,7 @@ LDAP_BIND_DN=
 LDAP_AUTH=
 LDAP_PASSWORD=
 LDAP_ROLE_FIELD=
+LDAP_FILTER=
 
 # Set this to true if you want GreenLight to support user signup and login without
 # Omniauth. For more information, see:
diff --git a/spec/controllers/rooms_controller_spec.rb b/spec/controllers/rooms_controller_spec.rb
index 2765a785..cc4f825d 100644
--- a/spec/controllers/rooms_controller_spec.rb
+++ b/spec/controllers/rooms_controller_spec.rb
@@ -248,7 +248,7 @@ describe RoomsController, type: :controller do
       allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
       post :join, params: { room_uid: @room, join_name: "Join Name" }
 
-      expect(response).to redirect_to(join_path(@owner.main_room, "Join Name", {}))
+      expect(response).to redirect_to(join_path(@owner.main_room, "Join Name", {}, response.cookies["guest_id"]))
     end
 
     it "should render wait if meeting isn't running" do