diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index e8284a0..ece2529 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -51,7 +51,7 @@ module ApplicationHelper
   def link_to_user(user, options={})
     if user.is_a?(User)
       name = h(user.name(options[:format]))
-      if user.active? || (User.current.admin? && user.logged?)
+      if user.active? || (User.current.admin? && user.logged?) && (User.current.admin? && (not User.current.allowed_to?(:hide_public_projects, nil, :global => true)))
         only_path = options[:only_path].nil? ? true : options[:only_path]
         link_to name, user_url(user, :only_path => only_path), :class => user.css_classes
       else
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index b714a1e..f38f4a7 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -62,8 +62,10 @@ 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 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')
@@ -74,9 +76,13 @@ module ProjectsHelper
   # Renders the projects index
   def render_project_hierarchy(projects)
     render_project_nested_lists(projects) do |project|
-      s = link_to_project(project, {}, :class => "#{project.css_classes} #{User.current.member_of?(project) ? 'icon icon-user my-project' : nil}")
-      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 => "#{project.css_classes} #{User.current.member_of?(project) ? 'icon icon-user my-project' : nil}")
+        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 d4af06c..4591be7 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -188,7 +188,7 @@ 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 c7612c9..d4fab04 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -603,7 +603,7 @@ class User < Principal
     return [] if project.nil? || project.archived?
     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
       []
@@ -705,7 +705,7 @@ class User < Principal
       roles = roles_for_project(context)
       return false unless roles
       roles.any? {|role|
-        (context.is_public? || role.member?) &&
+        ((context.is_public? && !allowed_to?(:hide_public_projects, nil, :global => true)) || role.member?) &&
         role.allowed_to?(action) &&
         (block_given? ? yield(role, self) : true)
       }
diff --git a/lib/redmine.rb b/lib/redmine.rb
index 9ecca63..cad51d6 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -79,6 +79,7 @@ Redmine::Scm::Base.add "Filesystem"
 # Permissions
 Redmine::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