Docs update for request security (#33974)

* added link to request security feature

* Update docs/sources/administration/security.md

Co-authored-by: Ursula Kallio <73951760+osg-grafana@users.noreply.github.com>

* Update docs/sources/administration/security.md

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

Co-authored-by: Ursula Kallio <73951760+osg-grafana@users.noreply.github.com>
Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

docs/sources/administration/security.md

@@ -16,6 +16,12 @@ To prevent this type of exploitation from happening, we recommend that you apply
 
 You can configure Grafana to only allow certain IP addresses or hostnames to be used as data source URLs and proxied through the Grafana data source proxy. Refer to [data_source_proxy_whitelist]({{< relref "../administration/configuration/#data-source-proxy-whitelist" >}}) for usage instructions.
 
+## Request security
+
+The request security configuration option allows users to limit requests from the Grafana server. It targets requests that are generated by users. For more information, refer to [Request security]({{< relref "../enterprise/request-security.md" >}}) in [Grafana Enterprise]({{< relref "../enterprise" >}}).
+
+> **Note:** Request security is available in Grafana Enterprise v7.4 and later versions. 
+
 ## Firewall rules
 
 Configure a firewall to restrict Grafana from making network requests to sensitive internal web services.