Add specific rate limits for package registry

app/helpers/application_settings_helper.rb

@@ -310,9 +310,15 @@ module ApplicationSettingsHelper
       :throttle_authenticated_web_enabled,
       :throttle_authenticated_web_period_in_seconds,
       :throttle_authenticated_web_requests_per_period,
+      :throttle_authenticated_packages_api_enabled,
+      :throttle_authenticated_packages_api_period_in_seconds,
+      :throttle_authenticated_packages_api_requests_per_period,
       :throttle_unauthenticated_enabled,
       :throttle_unauthenticated_period_in_seconds,
       :throttle_unauthenticated_requests_per_period,
+      :throttle_unauthenticated_packages_api_enabled,
+      :throttle_unauthenticated_packages_api_period_in_seconds,
+      :throttle_unauthenticated_packages_api_requests_per_period,
       :throttle_protected_paths_enabled,
       :throttle_protected_paths_period_in_seconds,
       :throttle_protected_paths_requests_per_period,

app/models/application_setting.rb

@@ -434,6 +434,14 @@ class ApplicationSetting < ApplicationRecord
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
 
+  validates :throttle_unauthenticated_packages_api_requests_per_period,
+            presence: true,
+            numericality: { only_integer: true, greater_than: 0 }
+
+  validates :throttle_unauthenticated_packages_api_period_in_seconds,
+            presence: true,
+            numericality: { only_integer: true, greater_than: 0 }
+
   validates :throttle_authenticated_api_requests_per_period,
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
@@ -450,6 +458,14 @@ class ApplicationSetting < ApplicationRecord
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
 
+  validates :throttle_authenticated_packages_api_requests_per_period,
+            presence: true,
+            numericality: { only_integer: true, greater_than: 0 }
+
+  validates :throttle_authenticated_packages_api_period_in_seconds,
+            presence: true,
+            numericality: { only_integer: true, greater_than: 0 }
+
   validates :throttle_protected_paths_requests_per_period,
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }

app/models/application_setting_implementation.rb

@@ -156,6 +156,9 @@ module ApplicationSettingImplementation
         throttle_authenticated_web_enabled: false,
         throttle_authenticated_web_period_in_seconds: 3600,
         throttle_authenticated_web_requests_per_period: 7200,
+        throttle_authenticated_packages_api_enabled: false,
+        throttle_authenticated_packages_api_period_in_seconds: 15,
+        throttle_authenticated_packages_api_requests_per_period: 1000,
         throttle_incident_management_notification_enabled: false,
         throttle_incident_management_notification_per_period: 3600,
         throttle_incident_management_notification_period_in_seconds: 3600,
@@ -165,6 +168,9 @@ module ApplicationSettingImplementation
         throttle_unauthenticated_enabled: false,
         throttle_unauthenticated_period_in_seconds: 3600,
         throttle_unauthenticated_requests_per_period: 3600,
+        throttle_unauthenticated_packages_api_enabled: false,
+        throttle_unauthenticated_packages_api_period_in_seconds: 15,
+        throttle_unauthenticated_packages_api_requests_per_period: 800,
         time_tracking_limit_to_hours: false,
         two_factor_grace_period: 48,
         unique_ips_limit_enabled: false,

app/views/admin/application_settings/_package_registry_limits.html.haml

+= form_for @application_setting, url: network_admin_application_settings_path(anchor: 'js-packages-limits-settings'), html: { class: 'fieldset-form' } do |f|
+  = form_errors(@application_setting)
+
+  %fieldset
+    %h5
+      = _('Unauthenticated API request rate limit')
+    .form-group
+      .form-check
+        = f.check_box :throttle_unauthenticated_packages_api_enabled, class: 'form-check-input', data: { qa_selector: 'throttle_unauthenticated_packages_api_checkbox' }
+        = f.label :throttle_unauthenticated_packages_api_enabled, class: 'form-check-label label-bold' do
+          = _('Enable unauthenticated API request rate limit')
+        %span.form-text.text-muted
+          = _('Helps reduce request volume (e.g. from crawlers or abusive bots)')
+    .form-group
+      = f.label :throttle_unauthenticated_packages_api_requests_per_period, 'Max unauthenticated API requests per period per IP', class: 'label-bold'
+      = f.number_field :throttle_unauthenticated_packages_api_requests_per_period, class: 'form-control gl-form-input'
+    .form-group
+      = f.label :throttle_unauthenticated_packages_api_period_in_seconds, 'Unauthenticated API rate limit period in seconds', class: 'label-bold'
+      = f.number_field :throttle_unauthenticated_packages_api_period_in_seconds, class: 'form-control gl-form-input'
+    %hr
+    %h5
+      = _('Authenticated API request rate limit')
+    .form-group
+      .form-check
+        = f.check_box :throttle_authenticated_packages_api_enabled, class: 'form-check-input', data: { qa_selector: 'throttle_authenticated_packages_api_checkbox' }
+        = f.label :throttle_authenticated_packages_api_enabled, class: 'form-check-label label-bold' do
+          = _('Enable authenticated API request rate limit')
+        %span.form-text.text-muted
+          = _('Helps reduce request volume (e.g. from crawlers or abusive bots)')
+    .form-group
+      = f.label :throttle_authenticated_packages_api_requests_per_period, 'Max authenticated API requests per period per user', class: 'label-bold'
+      = f.number_field :throttle_authenticated_packages_api_requests_per_period, class: 'form-control gl-form-input'
+    .form-group
+      = f.label :throttle_authenticated_packages_api_period_in_seconds, 'Authenticated API rate limit period in seconds', class: 'label-bold'
+      = f.number_field :throttle_authenticated_packages_api_period_in_seconds, class: 'form-control gl-form-input'
+
+  = f.submit 'Save changes', class: "gl-button btn btn-confirm", data: { qa_selector: 'save_changes_button' }

app/views/admin/application_settings/network.html.haml

@@ -24,6 +24,17 @@
   .settings-content
     = render 'ip_limits'
 
+%section.settings.as-packages-limits.no-animate#js-packages-limits-settings{ class: ('expanded' if expanded_by_default?), data: { qa_selector: 'packages_limits_content' } }
+  .settings-header
+    %h4
+      = _('Package Registry Rate Limits')
+    %button.btn.gl-button.btn-default.js-settings-toggle{ type: 'button' }
+      = expanded_by_default? ? _('Collapse') : _('Expand')
+    %p
+      = _('Configure specific limits for Packages API requests that supersede the general user and IP rate limits.')
+  .settings-content
+    = render 'package_registry_limits'
+
 %section.settings.as-outbound.no-animate#js-outbound-settings{ class: ('expanded' if expanded_by_default?), data: { qa_selector: 'outbound_requests_content' } }
   .settings-header
     %h4

changelogs/unreleased/feat-package_registry_rate_limit.yml

+---
+title: Add specific rate limits for Package Registry (Package API)
+merge_request: 57029
+author: Jonas Wälter @wwwjon
+type: added

db/migrate/20210317123054_add_throttle_package_registry_columns.rb

+# frozen_string_literal: true
+
+class AddThrottlePackageRegistryColumns < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :application_settings, :throttle_unauthenticated_packages_api_requests_per_period, :integer, default: 800, null: false
+    add_column :application_settings, :throttle_unauthenticated_packages_api_period_in_seconds, :integer, default: 15, null: false
+    add_column :application_settings, :throttle_authenticated_packages_api_requests_per_period, :integer, default: 1000, null: false
+    add_column :application_settings, :throttle_authenticated_packages_api_period_in_seconds, :integer, default: 15, null: false
+    add_column :application_settings, :throttle_unauthenticated_packages_api_enabled, :boolean, default: false, null: false
+    add_column :application_settings, :throttle_authenticated_packages_api_enabled, :boolean, default: false, null: false
+  end
+end

db/schema_migrations/20210317123054

+28b1e8add8ac7249be55ccd25e60c8a181d2ff036a7d69ac861bcdb5bf5e84e1
\ No newline at end of file

db/structure.sql

@@ -9445,6 +9445,12 @@ CREATE TABLE application_settings (
     encrypted_external_pipeline_validation_service_token text,
     encrypted_external_pipeline_validation_service_token_iv text,
     external_pipeline_validation_service_url text,
+    throttle_unauthenticated_packages_api_requests_per_period integer DEFAULT 800 NOT NULL,
+    throttle_unauthenticated_packages_api_period_in_seconds integer DEFAULT 15 NOT NULL,
+    throttle_authenticated_packages_api_requests_per_period integer DEFAULT 1000 NOT NULL,
+    throttle_authenticated_packages_api_period_in_seconds integer DEFAULT 15 NOT NULL,
+    throttle_unauthenticated_packages_api_enabled boolean DEFAULT false NOT NULL,
+    throttle_authenticated_packages_api_enabled boolean DEFAULT false NOT NULL,
     CONSTRAINT app_settings_container_reg_cleanup_tags_max_list_size_positive CHECK ((container_registry_cleanup_tags_service_max_list_size >= 0)),
     CONSTRAINT app_settings_ext_pipeline_validation_service_url_text_limit CHECK ((char_length(external_pipeline_validation_service_url) <= 255)),
     CONSTRAINT app_settings_registry_exp_policies_worker_capacity_positive CHECK ((container_registry_expiration_policies_worker_capacity >= 0)),

doc/administration/instance_limits.md

@@ -69,6 +69,15 @@ Read more on [protected path rate limits](../user/admin_area/settings/protected_
 
 - **Default rate limit** - After 10 requests, the client must wait 60 seconds before trying again
 
+### Package Registry
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/57029) in GitLab 13.12.
+
+This setting limits the request rate on the Packages API per user or IP. For more information, see
+[Package Registry Rate Limits](../user/admin_area/settings/package_registry_rate_limits.md).
+
+- **Default rate limit:** Disabled by default
+
 ### Import/Export
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/35728) in GitLab 13.2.

doc/administration/packages/index.md

@@ -98,6 +98,12 @@ To enable the Packages feature:
 
 1. [Restart GitLab](../restart_gitlab.md#helm-chart-installations "How to reconfigure Helm GitLab") for the changes to take effect.
 
+## Rate limits
+
+When downloading packages as dependencies in downstream projects, many requests are made through the
+Packages API. You may therefore reach enforced user and IP rate limits. To address this issue, you
+can define specific rate limits for the Packages API. For more details, see [Package Registry Rate Limits](../../user/admin_area/settings/package_registry_rate_limits.md).
+
 ## Changing the storage path
 
 By default, the packages are stored locally, but you can change the default

doc/security/rate_limits.md

@@ -33,6 +33,7 @@ These are rate limits you can set in the Admin Area of your instance:
 - [Protected paths](../user/admin_area/settings/protected_paths.md)
 - [Raw endpoints rate limits](../user/admin_area/settings/rate_limits_on_raw_endpoints.md)
 - [User and IP rate limits](../user/admin_area/settings/user_and_ip_rate_limits.md)
+- [Package registry rate limits](../user/admin_area/settings/package_registry_rate_limits.md)
 
 ## Non-configurable limits
 

doc/user/admin_area/settings/index.md

@@ -91,6 +91,7 @@ Access the default page for admin area settings by navigating to **Admin Area >
 | ------ | ----------- |
 | Performance optimization | [Write to "authorized_keys" file](../../../administration/operations/fast_ssh_key_lookup.md#setting-up-fast-lookup-via-gitlab-shell) and [Push event activities limit and bulk push events](push_event_activities_limit.md). Various settings that affect GitLab performance. |
 | [User and IP rate limits](user_and_ip_rate_limits.md) | Configure limits for web and API requests. |
+| [Package Registry Rate Limits](package_registry_rate_limits.md) | Configure specific limits for Packages API requests that supersede the user and IP rate limits. |
 | [Outbound requests](../../../security/webhooks.md) | Allow requests to the local network from hooks and services. |
 | [Protected Paths](protected_paths.md) | Configure paths to be protected by Rack Attack. |
 | [Incident Management](../../../operations/incident_management/index.md) Limits | Configure limits on the number of inbound alerts able to be sent to a project. |

doc/user/admin_area/settings/package_registry_rate_limits.md

+---
+stage: Package
+group: Package
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
+type: reference
+---
+
+# Package Registry Rate Limits **(FREE SELF)**
+
+Rate limiting is a common technique used to improve the security and durability of a web
+application. For more details, see [Rate limits](../../../security/rate_limits.md). General user and
+IP rate limits can be enforced in **Admin Area > Settings > Network > User and IP rate limits**.
+For more details, see [User and IP rate limits](user_and_ip_rate_limits.md).
+
+With the [GitLab Package Registry](../../packages/package_registry/index.md),
+you can use GitLab as a private or public registry for a variety of common package managers. You can
+publish and share packages, which others can consume as a dependency in downstream projects through
+the [Packages API](../../../api/packages.md).
+
+When downloading such dependencies in downstream projects, many requests are made through the
+Packages API. You may therefore reach enforced user and IP rate limits. To address this issue, you
+can define specific rate limits for the Packages API in
+**Admin Area > Settings > Network > Package Registry Rate Limits**:
+
+- Unauthenticated Packages API requests
+- Authenticated Packages API requests
+
+These limits are disabled by default. When enabled, they supersede the general user and IP rate
+limits for requests to the Packages API. You can therefore keep the general user and IP rate limits,
+and increase (if necessary) the rate limits for the Packages API.
+
+Besides this precedence, there are no differences in functionality compared to the general user and
+IP rate limits. For more details, see [User and IP rate limits](user_and_ip_rate_limits.md).

doc/user/admin_area/settings/user_and_ip_rate_limits.md

@@ -133,6 +133,8 @@ The possible names are:
 - `throttle_unauthenticated_protected_paths`
 - `throttle_authenticated_protected_paths_api`
 - `throttle_authenticated_protected_paths_web`
+- `throttle_unauthenticated_packages_api`
+- `throttle_authenticated_packages_api`
 
 For example, to try out throttles for all authenticated requests to
 non-protected paths can be done by setting

lib/gitlab/metrics/subscribers/rack_attack.rb

@@ -19,7 +19,8 @@ module Gitlab
           :throttle_authenticated_api,
           :throttle_authenticated_web,
           :throttle_authenticated_protected_paths_api,
-          :throttle_authenticated_protected_paths_web
+          :throttle_authenticated_protected_paths_web,
+          :throttle_authenticated_packages_api
         ].freeze
 
         PAYLOAD_KEYS = [

lib/gitlab/rack_attack.rb

@@ -83,16 +83,13 @@ module Gitlab
 
     def self.configure_throttles(rack_attack)
       throttle_or_track(rack_attack, 'throttle_unauthenticated', Gitlab::Throttle.unauthenticated_options) do |req|
-        if !req.should_be_skipped? &&
-           Gitlab::Throttle.settings.throttle_unauthenticated_enabled &&
-           req.unauthenticated?
+        if req.throttle_unauthenticated?
           req.ip
         end
       end
 
       throttle_or_track(rack_attack, 'throttle_authenticated_api', Gitlab::Throttle.authenticated_api_options) do |req|
-        if req.api_request? &&
-           Gitlab::Throttle.settings.throttle_authenticated_api_enabled
+        if req.throttle_authenticated_api?
           req.throttled_user_id([:api])
         end
       end
@@ -107,40 +104,41 @@ module Gitlab
       end
 
       throttle_or_track(rack_attack, 'throttle_authenticated_web', Gitlab::Throttle.authenticated_web_options) do |req|
-        if req.web_request? &&
-           Gitlab::Throttle.settings.throttle_authenticated_web_enabled
+        if req.throttle_authenticated_web?
           req.throttled_user_id([:api, :rss, :ics])
         end
       end
 
       throttle_or_track(rack_attack, 'throttle_unauthenticated_protected_paths', Gitlab::Throttle.protected_paths_options) do |req|
-        if req.post? &&
-           !req.should_be_skipped? &&
-           req.protected_path? &&
-           Gitlab::Throttle.protected_paths_enabled? &&
-           req.unauthenticated?
+        if req.throttle_unauthenticated_protected_paths?
           req.ip
         end
       end
 
       throttle_or_track(rack_attack, 'throttle_authenticated_protected_paths_api', Gitlab::Throttle.protected_paths_options) do |req|
-        if req.post? &&
-           req.api_request? &&
-           req.protected_path? &&
-           Gitlab::Throttle.protected_paths_enabled?
+        if req.throttle_authenticated_protected_paths_api?
           req.throttled_user_id([:api])
         end
       end
 
       throttle_or_track(rack_attack, 'throttle_authenticated_protected_paths_web', Gitlab::Throttle.protected_paths_options) do |req|
-        if req.post? &&
-           req.web_request? &&
-           req.protected_path? &&
-           Gitlab::Throttle.protected_paths_enabled?
+        if req.throttle_authenticated_protected_paths_web?
           req.throttled_user_id([:api, :rss, :ics])
         end
       end
 
+      throttle_or_track(rack_attack, 'throttle_unauthenticated_packages_api', Gitlab::Throttle.unauthenticated_packages_api_options) do |req|
+        if req.throttle_unauthenticated_packages_api?
+          req.ip
+        end
+      end
+
+      throttle_or_track(rack_attack, 'throttle_authenticated_packages_api', Gitlab::Throttle.authenticated_packages_api_options) do |req|
+        if req.throttle_authenticated_packages_api?
+          req.throttled_user_id([:api])
+        end
+      end
+
       rack_attack.safelist('throttle_bypass_header') do |req|
         Gitlab::Throttle.bypass_header.present? &&
           req.get_header(Gitlab::Throttle.bypass_header) == '1'

lib/gitlab/rack_attack/request.rb

@@ -58,6 +58,57 @@ module Gitlab
         path =~ protected_paths_regex
       end
 
+      def throttle_unauthenticated?
+        !should_be_skipped? &&
+        !throttle_unauthenticated_packages_api? &&
+        Gitlab::Throttle.settings.throttle_unauthenticated_enabled &&
+        unauthenticated?
+      end
+
+      def throttle_authenticated_api?
+        api_request? &&
+        !throttle_authenticated_packages_api? &&
+        Gitlab::Throttle.settings.throttle_authenticated_api_enabled
+      end
+
+      def throttle_authenticated_web?
+        web_request? &&
+        Gitlab::Throttle.settings.throttle_authenticated_web_enabled
+      end
+
+      def throttle_unauthenticated_protected_paths?
+        post? &&
+        !should_be_skipped? &&
+        protected_path? &&
+        Gitlab::Throttle.protected_paths_enabled? &&
+        unauthenticated?
+      end
+
+      def throttle_authenticated_protected_paths_api?
+        post? &&
+        api_request? &&
+        protected_path? &&
+        Gitlab::Throttle.protected_paths_enabled?
+      end
+
+      def throttle_authenticated_protected_paths_web?
+        post? &&
+        web_request? &&
+        protected_path? &&
+        Gitlab::Throttle.protected_paths_enabled?
+      end
+
+      def throttle_unauthenticated_packages_api?
+        packages_api_path? &&
+        Gitlab::Throttle.settings.throttle_unauthenticated_packages_api_enabled &&
+        unauthenticated?
+      end
+
+      def throttle_authenticated_packages_api?
+        packages_api_path? &&
+        Gitlab::Throttle.settings.throttle_authenticated_packages_api_enabled
+      end
+
       private
 
       def authenticated_user_id(request_formats)
@@ -75,6 +126,10 @@ module Gitlab
       def protected_paths_regex
         Regexp.union(protected_paths.map { |path| /\A#{Regexp.escape(path)}/ })
       end
+
+      def packages_api_path?
+        path =~ ::Gitlab::Regex::Packages::API_PATH_REGEX
+      end
     end
   end
 end

lib/gitlab/regex.rb

@@ -6,6 +6,8 @@ module Gitlab
       CONAN_RECIPE_FILES = %w[conanfile.py conanmanifest.txt conan_sources.tgz conan_export.tgz].freeze
       CONAN_PACKAGE_FILES = %w[conaninfo.txt conanmanifest.txt conan_package.tgz].freeze
 
+      API_PATH_REGEX = %r{^/api/v\d+/(projects/[^/]+/|groups?/[^/]+/-/)?packages/[A-Za-z]+}.freeze
+
       def conan_package_reference_regex
         @conan_package_reference_regex ||= %r{\A[A-Za-z0-9]+\z}.freeze
       end

lib/gitlab/throttle.rb

@@ -49,6 +49,20 @@ module Gitlab
       { limit: limit_proc, period: period_proc }
     end
 
+    def self.unauthenticated_packages_api_options
+      limit_proc = proc { |req| settings.throttle_unauthenticated_packages_api_requests_per_period }
+      period_proc = proc { |req| settings.throttle_unauthenticated_packages_api_period_in_seconds.seconds }
+
+      { limit: limit_proc, period: period_proc }
+    end
+
+    def self.authenticated_packages_api_options
+      limit_proc = proc { |req| settings.throttle_authenticated_packages_api_requests_per_period }
+      period_proc = proc { |req| settings.throttle_authenticated_packages_api_period_in_seconds.seconds }
+
+      { limit: limit_proc, period: period_proc }
+    end
+
     def self.rate_limiting_response_text
       (settings.rate_limiting_response_text.presence || DEFAULT_RATE_LIMITING_RESPONSE_TEXT) + "\n"
     end

locale/gitlab.pot

@@ -8305,6 +8305,9 @@ msgstr ""
 msgid "Configure repository mirroring."
 msgstr ""
 
+msgid "Configure specific limits for Packages API requests that supersede the general user and IP rate limits."
+msgstr ""
+
 msgid "Configure storage path settings."
 msgstr ""
 
@@ -12041,6 +12044,9 @@ msgstr ""
 msgid "Enable two-factor authentication"
 msgstr ""
 
+msgid "Enable unauthenticated API request rate limit"
+msgstr ""
+
 msgid "Enable unauthenticated request rate limit"
 msgstr ""
 
@@ -22574,6 +22580,9 @@ msgstr ""
 msgid "Package Registry"
 msgstr ""
 
+msgid "Package Registry Rate Limits"
+msgstr ""
+
 msgid "Package already exists"
 msgstr ""
 
@@ -33582,6 +33591,9 @@ msgstr ""
 msgid "Unassigned"
 msgstr ""
 
+msgid "Unauthenticated API request rate limit"
+msgstr ""
+
 msgid "Unauthenticated rate limit period in seconds"
 msgstr ""
 

spec/models/application_setting_spec.rb

@@ -785,6 +785,10 @@ RSpec.describe ApplicationSetting do
           throttle_authenticated_api_period_in_seconds
           throttle_authenticated_web_requests_per_period
           throttle_authenticated_web_period_in_seconds
+          throttle_unauthenticated_packages_api_requests_per_period
+          throttle_unauthenticated_packages_api_period_in_seconds
+          throttle_authenticated_packages_api_requests_per_period
+          throttle_authenticated_packages_api_period_in_seconds
         ]
       end
 

spec/requests/rack_attack_global_spec.rb

@@ -18,7 +18,11 @@ RSpec.describe 'Rack Attack global throttles', :use_clean_rails_memory_store_cac
       throttle_authenticated_web_requests_per_period: 100,
       throttle_authenticated_web_period_in_seconds: 1,
       throttle_authenticated_protected_paths_request_per_period: 100,
-      throttle_authenticated_protected_paths_in_seconds: 1
+      throttle_authenticated_protected_paths_in_seconds: 1,
+      throttle_unauthenticated_packages_api_requests_per_period: 100,
+      throttle_unauthenticated_packages_api_period_in_seconds: 1,
+      throttle_authenticated_packages_api_requests_per_period: 100,
+      throttle_authenticated_packages_api_period_in_seconds: 1
     }
   end
 
@@ -435,6 +439,186 @@ RSpec.describe 'Rack Attack global throttles', :use_clean_rails_memory_store_cac
     end
   end
 
+  describe 'Packages API' do
+    let(:request_method) { 'GET' }
+
+    context 'unauthenticated' do
+      let_it_be(:project) { create(:project, :public) }
+
+      let(:throttle_setting_prefix) { 'throttle_unauthenticated_packages_api' }
+      let(:packages_path_that_does_not_require_authentication) { "/api/v4/projects/#{project.id}/packages/conan/v1/ping" }
+
+      def do_request
+        get packages_path_that_does_not_require_authentication
+      end
+
+      before do
+        settings_to_set[:throttle_unauthenticated_packages_api_requests_per_period] = requests_per_period
+        settings_to_set[:throttle_unauthenticated_packages_api_period_in_seconds] = period_in_seconds
+      end
+
+      context 'when unauthenticated packages api throttle is disabled' do
+        before do
+          settings_to_set[:throttle_unauthenticated_packages_api_enabled] = false
+          stub_application_setting(settings_to_set)
+        end
+
+        it 'allows requests over the rate limit' do
+          (1 + requests_per_period).times do
+            do_request
+            expect(response).to have_gitlab_http_status(:ok)
+          end
+        end
+
+        context 'when unauthenticated api throttle is enabled' do
+          before do
+            settings_to_set[:throttle_unauthenticated_requests_per_period] = requests_per_period
+            settings_to_set[:throttle_unauthenticated_period_in_seconds] = period_in_seconds
+            settings_to_set[:throttle_unauthenticated_enabled] = true
+            stub_application_setting(settings_to_set)
+          end
+
+          it 'rejects requests over the unauthenticated api rate limit' do
+            requests_per_period.times do
+              do_request
+              expect(response).to have_gitlab_http_status(:ok)
+            end
+
+            expect_rejection { do_request }
+          end
+        end
+      end
+
+      context 'when unauthenticated packages api throttle is enabled' do
+        before do
+          settings_to_set[:throttle_unauthenticated_packages_api_requests_per_period] = requests_per_period # 1
+          settings_to_set[:throttle_unauthenticated_packages_api_period_in_seconds] = period_in_seconds # 10_000
+          settings_to_set[:throttle_unauthenticated_packages_api_enabled] = true
+          stub_application_setting(settings_to_set)
+        end
+
+        it 'rejects requests over the rate limit' do
+          requests_per_period.times do
+            do_request
+            expect(response).to have_gitlab_http_status(:ok)
+          end
+
+          expect_rejection { do_request }
+        end
+
+        context 'when unauthenticated api throttle is lower' do
+          before do
+            settings_to_set[:throttle_unauthenticated_requests_per_period] = 0
+            settings_to_set[:throttle_unauthenticated_period_in_seconds] = period_in_seconds
+            settings_to_set[:throttle_unauthenticated_enabled] = true
+            stub_application_setting(settings_to_set)
+          end
+
+          it 'ignores unauthenticated api throttle' do
+            requests_per_period.times do
+              do_request
+              expect(response).to have_gitlab_http_status(:ok)
+            end
+
+            expect_rejection { do_request }
+          end
+        end
+
+        it_behaves_like 'tracking when dry-run mode is set' do
+          let(:throttle_name) { 'throttle_unauthenticated_packages_api' }
+        end
+      end
+    end
+
+    context 'authenticated', :api do
+      let_it_be(:project) { create(:project, :internal) }
+      let_it_be(:user) { create(:user) }
+      let_it_be(:token) { create(:personal_access_token, user: user) }
+      let_it_be(:other_user) { create(:user) }
+      let_it_be(:other_user_token) { create(:personal_access_token, user: other_user) }
+
+      let(:throttle_setting_prefix) { 'throttle_authenticated_packages_api' }
+      let(:api_partial_url) { "/projects/#{project.id}/packages/conan/v1/ping" }
+
+      before do
+        stub_application_setting(settings_to_set)
+      end
+
+      context 'with the token in the query string' do
+        let(:request_args) { [api(api_partial_url, personal_access_token: token), {}] }
+        let(:other_user_request_args) { [api(api_partial_url, personal_access_token: other_user_token), {}] }
+
+        it_behaves_like 'rate-limited token-authenticated requests'
+      end
+
+      context 'with the token in the headers' do
+        let(:request_args) { api_get_args_with_token_headers(api_partial_url, personal_access_token_headers(token)) }
+        let(:other_user_request_args) { api_get_args_with_token_headers(api_partial_url, personal_access_token_headers(other_user_token)) }
+
+        it_behaves_like 'rate-limited token-authenticated requests'
+      end
+
+      context 'precedence over authenticated api throttle' do
+        before do
+          settings_to_set[:throttle_authenticated_packages_api_requests_per_period] = requests_per_period
+          settings_to_set[:throttle_authenticated_packages_api_period_in_seconds] = period_in_seconds
+        end
+
+        def do_request
+          get api(api_partial_url, personal_access_token: token)
+        end
+
+        context 'when authenticated packages api throttle is enabled' do
+          before do
+            settings_to_set[:throttle_authenticated_packages_api_enabled] = true
+          end
+
+          context 'when authenticated api throttle is lower' do
+            before do
+              settings_to_set[:throttle_authenticated_api_requests_per_period] = 0
+              settings_to_set[:throttle_authenticated_api_period_in_seconds] = period_in_seconds
+              settings_to_set[:throttle_authenticated_api_enabled] = true
+              stub_application_setting(settings_to_set)
+            end
+
+            it 'ignores authenticated api throttle' do
+              requests_per_period.times do
+                do_request
+                expect(response).to have_gitlab_http_status(:ok)
+              end
+
+              expect_rejection { do_request }
+            end
+          end
+        end
+
+        context 'when authenticated packages api throttle is disabled' do
+          before do
+            settings_to_set[:throttle_authenticated_packages_api_enabled] = false
+          end
+
+          context 'when authenticated api throttle is enabled' do
+            before do
+              settings_to_set[:throttle_authenticated_api_requests_per_period] = requests_per_period
+              settings_to_set[:throttle_authenticated_api_period_in_seconds] = period_in_seconds
+              settings_to_set[:throttle_authenticated_api_enabled] = true
+              stub_application_setting(settings_to_set)
+            end
+
+            it 'rejects requests over the authenticated api rate limit' do
+              requests_per_period.times do
+                do_request
+                expect(response).to have_gitlab_http_status(:ok)
+              end
+
+              expect_rejection { do_request }
+            end
+          end
+        end
+      end
+    end
+  end
+
   describe 'throttle bypass header' do
     let(:headers) { {} }
     let(:bypass_header) { 'gitlab-bypass-rate-limiting' }

spec/services/application_settings/update_service_spec.rb

@@ -336,6 +336,32 @@ RSpec.describe ApplicationSettings::UpdateService do
     end
   end
 
+  context 'when package registry rate limits are passed' do
+    let(:params) do
+      {
+        throttle_unauthenticated_packages_api_enabled: 1,
+        throttle_unauthenticated_packages_api_period_in_seconds: 500,
+        throttle_unauthenticated_packages_api_requests_per_period: 20,
+        throttle_authenticated_packages_api_enabled: 1,
+        throttle_authenticated_packages_api_period_in_seconds: 600,
+        throttle_authenticated_packages_api_requests_per_period: 10
+      }
+    end
+
+    it 'updates package registry throttle settings' do
+      subject.execute
+
+      application_settings.reload
+
+      expect(application_settings.throttle_unauthenticated_packages_api_enabled).to be_truthy
+      expect(application_settings.throttle_unauthenticated_packages_api_period_in_seconds).to eq(500)
+      expect(application_settings.throttle_unauthenticated_packages_api_requests_per_period).to eq(20)
+      expect(application_settings.throttle_authenticated_packages_api_enabled).to be_truthy
+      expect(application_settings.throttle_authenticated_packages_api_period_in_seconds).to eq(600)
+      expect(application_settings.throttle_authenticated_packages_api_requests_per_period).to eq(10)
+    end
+  end
+
   context 'when issues_create_limit is passed' do
     let(:params) do
       {

spec/support/shared_examples/requests/rack_attack_shared_examples.rb

 # frozen_string_literal: true
 #
 # Requires let variables:
-# * throttle_setting_prefix: "throttle_authenticated_api", "throttle_authenticated_web", "throttle_protected_paths"
+# * throttle_setting_prefix: "throttle_authenticated_api", "throttle_authenticated_web", "throttle_protected_paths", "throttle_authenticated_packages_api"
 # * request_method
 # * request_args
 # * other_user_request_args
@@ -13,7 +13,8 @@ RSpec.shared_examples 'rate-limited token-authenticated requests' do
     {
       "throttle_protected_paths" => "throttle_authenticated_protected_paths_api",
       "throttle_authenticated_api" => "throttle_authenticated_api",
-      "throttle_authenticated_web" => "throttle_authenticated_web"
+      "throttle_authenticated_web" => "throttle_authenticated_web",
+      "throttle_authenticated_packages_api" => "throttle_authenticated_packages_api"
     }
   end