將熟知的服務 (WKS) 記錄寫入區域檔案時，DNS 伺服器發現與已知服務無關的連接埠號碼。而事件資料就是不明服務的連接埠號碼。

While writing a well known service (WKS) record to the zone file, the DNS server encountered a port number that is not associated with a known service. The event data is the port number of the unknown service.