Update docs for unauthenticated API throttle settings

Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/335300

doc/api/settings.md

@@ -412,9 +412,15 @@ listed in the descriptions of the relevant settings.
 | `throttle_authenticated_web_enabled`     | boolean          | no                                   | (**If enabled, requires:** `throttle_authenticated_web_period_in_seconds` and `throttle_authenticated_web_requests_per_period`) Enable authenticated web request rate limit. Helps reduce request volume (for example, from crawlers or abusive bots). |
 | `throttle_authenticated_web_period_in_seconds` | integer    | required by:<br>`throttle_authenticated_web_enabled` | Rate limit period in seconds. |
 | `throttle_authenticated_web_requests_per_period` | integer  | required by:<br>`throttle_authenticated_web_enabled` | Max requests per period per user. |
-| `throttle_unauthenticated_enabled`       | boolean          | no                                   | (**If enabled, requires:** `throttle_unauthenticated_period_in_seconds` and `throttle_unauthenticated_requests_per_period`) Enable unauthenticated request rate limit. Helps reduce request volume (for example, from crawlers or abusive bots). |
-| `throttle_unauthenticated_period_in_seconds` | integer      | required by:<br>`throttle_unauthenticated_enabled` | Rate limit period in seconds. |
-| `throttle_unauthenticated_requests_per_period` | integer    | required by:<br>`throttle_unauthenticated_enabled` | Max requests per period per IP. |
+| `throttle_unauthenticated_enabled`       | boolean          | no                                   | ([Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/335300) in GitLab 14.3. Use `throttle_unauthenticated_web_enabled` or `throttle_unauthenticated_api_enabled` instead.) (**If enabled, requires:** `throttle_unauthenticated_period_in_seconds` and `throttle_unauthenticated_requests_per_period`) Enable unauthenticated web request rate limit. Helps reduce request volume (for example, from crawlers or abusive bots). |
+| `throttle_unauthenticated_period_in_seconds` | integer      | required by:<br>`throttle_unauthenticated_enabled` | ([Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/335300) in GitLab 14.3. Use `throttle_unauthenticated_web_period_in_seconds` or `throttle_unauthenticated_api_period_in_seconds` instead.) Rate limit period in seconds. |
+| `throttle_unauthenticated_requests_per_period` | integer    | required by:<br>`throttle_unauthenticated_enabled` | ([Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/335300) in GitLab 14.3. Use `throttle_unauthenticated_web_requests_per_period` or `throttle_unauthenticated_api_requests_per_period` instead.) Max requests per period per IP. |
+| `throttle_unauthenticated_api_enabled`       | boolean          | no                                   | (**If enabled, requires:** `throttle_unauthenticated_api_period_in_seconds` and `throttle_unauthenticated_api_requests_per_period`) Enable unauthenticated API request rate limit. Helps reduce request volume (for example, from crawlers or abusive bots). |
+| `throttle_unauthenticated_api_period_in_seconds` | integer      | required by:<br>`throttle_unauthenticated_api_enabled` | Rate limit period in seconds. |
+| `throttle_unauthenticated_api_requests_per_period` | integer    | required by:<br>`throttle_unauthenticated_api_enabled` | Max requests per period per IP. |
+| `throttle_unauthenticated_web_enabled`       | boolean          | no                                   | (**If enabled, requires:** `throttle_unauthenticated_web_period_in_seconds` and `throttle_unauthenticated_web_requests_per_period`) Enable unauthenticated web request rate limit. Helps reduce request volume (for example, from crawlers or abusive bots). |
+| `throttle_unauthenticated_web_period_in_seconds` | integer      | required by:<br>`throttle_unauthenticated_web_enabled` | Rate limit period in seconds. |
+| `throttle_unauthenticated_web_requests_per_period` | integer    | required by:<br>`throttle_unauthenticated_web_enabled` | Max requests per period per IP. |
 | `time_tracking_limit_to_hours`           | boolean          | no                                   | Limit display of time tracking units to hours. Default is `false`. |
 | `two_factor_grace_period`                | integer          | required by: `require_two_factor_authentication` | Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication. |
 | `unique_ips_limit_enabled`               | boolean          | no                                   | (**If enabled, requires:** `unique_ips_limit_per_user` and `unique_ips_limit_time_window`) Limit sign in from multiple IPs. |

doc/user/admin_area/settings/user_and_ip_rate_limits.md

@@ -13,7 +13,8 @@ of a web application. For more details, see
 
 The following limits are disabled by default:
 
-- Unauthenticated requests
+- Unauthenticated API requests
+- Unauthenticated web requests
 - Authenticated API requests
 - Authenticated web requests
 
@@ -21,7 +22,7 @@ To enforce any or all of them:
 
 1. On the top bar, select **Menu > Admin**.
 1. On the left sidebar, select **Settings > Network**, and expand **User and IP rate limits**:
-   ![user-and-ip-rate-limits](img/user_and_ip_rate_limits.png)
+   ![user-and-ip-rate-limits](img/user_and_ip_rate_limits_v14_3.png)
 
    NOTE:
    By default, all Git operations are first tried unauthenticated. Because of this, HTTP Git operations
@@ -129,6 +130,10 @@ a comma-separated list of throttle names.
 The possible names are:
 
 - `throttle_unauthenticated`
+  - [Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/335300) in GitLab 14.3. Use `throttle_unauthenticated_api` or `throttle_unauthenticated_web` instead.
+    `throttle_unauthenticated` is still supported and selects both of them.
+- `throttle_unauthenticated_api`
+- `throttle_unauthenticated_web`
 - `throttle_authenticated_api`
 - `throttle_authenticated_web`
 - `throttle_unauthenticated_protected_paths`