Role Based Access Control (RBAC) Filter

The RBAC filter is used to authorize actions (permissions) by identified downstream clients (principals). This is useful to explicitly manage callers to an application and protect it from unexpected or forbidden agents. The filter supports configuration with either a safe-list (ALLOW) or block-list (DENY) set of policies based off properties of the connection (IPs, ports, SSL subject) as well as the incoming request’s HTTP headers. This filter also supports policy in both enforcement and shadow mode, shadow mode won’t effect real users, it is used to test that a new set of policies work before rolling out to production.

Per-Route Configuration

The RBAC filter configuration can be overridden or disabled on a per-route basis by providing a RBACPerRoute configuration on the virtual host, route, or weighted cluster.

Statistics

The RBAC filter outputs statistics in the http.<stat_prefix>.rbac. namespace. The stat prefix comes from the owning HTTP connection manager.

Name Type Description
allowed Counter Total requests that were allowed access
denied Counter Total requests that were denied access
shadow_allowed Counter Total requests that would be allowed access by the filter’s shadow rules
shadow_denied Counter Total requests that would be denied access by the filter’s shadow rules

Dynamic Metadata

The RBAC filter emits the following dynamic metadata.

Name Type Description
shadow_effective_policy_id string The effective shadow policy ID matching the action (if any).
shadow_engine_result string The engine result for the shadow rules (i.e. either allowed or denied).