ostListener</td></tr><tr><td>Message Code</td><td>IST0143</td></tr><tr><td>Description</td><td>A port exposed in a Service is bound to a localhost address</td></tr><tr><td>Level</td><td>Error</td></tr></tbody></table></div><p>This message occurs when a workload is listening on a <code>localhost</code> network interface, but the port is exposed in the Service.
When this occurs, the port will not be accessible to other pods.</p><p>This check is primarily added to detect workloads on older Istio versions that 