diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index c6fce6e..3f4bace 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -62,7 +62,7 @@ module ApplicationHelper
       name = h(principal.name(options[:format]))
       name = "@".html_safe + name if options[:mention]
       css_classes = ''
-      if principal.active? || (User.current.admin? && principal.logged?)
+      if principal.active? || (User.current.admin? && principal.logged?) && (User.current.admin? && (not User.current.allowed_to?(:hide_public_projects, nil, :global => true)))
         url = user_url(principal, :only_path => only_path)
         css_classes += principal.css_classes
       end
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index d4f7339..3d09c09 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -62,8 +62,12 @@ module ProjectsHelper
 
   def render_project_action_links
     links = (+"").html_safe
-    if User.current.allowed_to?(:add_project, nil, :global => true)
-      links << link_to(l(:label_project_new), new_project_path, :class => 'icon icon-add')
+    #if User.current.allowed_to?(:add_project, nil, :global => true)
+    #  links << link_to(l(:label_project_new), new_project_path, :class => 'icon icon-add')
+    if not User.current.allowed_to(:hide_public_projects, nil, :global=>true)
+      if User.current.allowed_to?(:add_project, nil, :global => true)
+        links << link_to(l(:label_project_new), new_project_path, :class => 'icon icon-add')
+      end
     end
     if User.current.admin?
       links << link_to(l(:label_administration), admin_projects_path, :class => 'icon icon-settings')
@@ -78,9 +82,13 @@ module ProjectsHelper
       classes = project.css_classes.split
       classes += %w(icon icon-user my-project) if User.current.member_of?(project)
       classes += %w(icon icon-bookmarked-project) if bookmarked_project_ids.include?(project.id)
-      s = link_to_project(project, {}, :class => classes.uniq.join(' '))
-      if project.description.present?
-        s << content_tag('div', textilizable(project.short_description, :project => project), :class => 'wiki description')
+      if (not User.current.logged?) || ((not User.current.admin) && (not User.current.member_of?(project)) && User.current.allowed_to?(:hide_public_projects, nil, :global => true))
+        s = ""
+      else
+        s = link_to_project(project, {}, :class => classes.uniq.join(' '))
+        if project.description.present?
+          s << content_tag('div', textilizable(project.short_description, :project => project), :class => 'wiki description')
+        end
       end
       s
     end
diff --git a/app/models/project.rb b/app/models/project.rb
index 11f4a95..c5a45cc 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -205,7 +205,7 @@ class Project < ActiveRecord::Base
       statement_by_role = {}
       unless options[:member]
         role = user.builtin_role
-        if role.allowed_to?(permission)
+        if role.allowed_to?(permission) && !user.allowed_to?(:hide_public_projects, nil, :global => true)
           s = "#{Project.table_name}.is_public = #{connection.quoted_true}"
           if user.id
             group = role.anonymous? ? Group.anonymous : Group.non_member
diff --git a/app/models/user.rb b/app/models/user.rb
index cd923e4..ff5db27 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -645,7 +645,7 @@ class User < Principal
 
     if membership = membership(project)
       membership.roles.to_a
-    elsif project.is_public?
+    elsif project.is_public? && !allowed_to?(:hide_public_projects, nil, :global => true)
       project.override_roles(builtin_role)
     else
       []
@@ -748,7 +748,7 @@ class User < Principal
       return false unless roles
 
       roles.any? do |role|
-        (context.is_public? || role.member?) &&
+        ((context.is_public? && !allowed_to?(:hide_public_projects, nil, :global => true)) || role.member?) &&
         role.allowed_to?(action) &&
         (block ? yield(role, self) : true)
       end
diff --git a/lib/redmine/preparation.rb b/lib/redmine/preparation.rb
index c51ecfd..8215123 100644
--- a/lib/redmine/preparation.rb
+++ b/lib/redmine/preparation.rb
@@ -34,6 +34,7 @@ module Redmine
       # Permissions
       AccessControl.map do |map|
         map.permission :view_project, {:projects => [:show, :bookmark], :activities => [:index]}, :public => true, :read => true
+        map.permission :hide_public_projects, {:projects => [:show]}, :require => :loggedin
         map.permission :search_project, {:search => :index}, :public => true, :read => true
         map.permission :add_project, {:projects => [:new, :create]}, :require => :loggedin
         map.permission :edit_project, {:projects => [:settings, :edit, :update]}, :require => :member