US Patent 10205803 System for determining improper port configurations

Described are techniques for determining causes of failed connections, such as a mismatch between a protocol associated with a request and the protocol associated with a port to which the request is provided. The port may be configured to process requests having a particular protocol, while monitoring and recognizing protocols used by other ports. If the request is determined to be associated with a different protocol supported by another port, a notification of the error may be provided to the client associated with the request. Based on characteristics of the request, the client, and the port, a control action may be taken, which may include rejecting the request or processing the request at the received port using a different protocol. Commonalities between failed requests may be analyzed to determine sources of error.