YARN REST API Protection

Systems, computer program products and methods implementing YARN service protection are described. A reverse proxy in a cluster of computers in a distributed computing system can intercept a request to access a YARN service. The request can be associated with requester credentials. The reverse proxy determines that the request includes a REST API call. The reverse proxy determines, based on authentication configuration information, that the call needs to be authenticated. The reverse proxy authenticates the call based on the requester credentials using an authentication mechanism specified in the configuration information. Upon successful authentication of the call, the reverse proxy makes authorization checks based on specified configuration information. If the authorization checks pass, the reverse proxy forwards the request to a server that provides the YARN service in the cluster. If the authentication or authorization checks fail, the reverse proxy denies the request.