Top Receivers with the Most Failed Connections report reveals devices that received the highest number of unsuccessful TCP connection attempts, or SYN packets.

Unsuccessful connections (incomplete TCP handshakes) can imply port scanning, penetration testing, and methods used by security testers or hackers to find potential intrusion points on a network. Large numbers of these half-open or incomplete connections can also denote an attempt at a denial of service (DoS) attack.

了解資料欄資料

各報表的預設檢視，包含具有以下資料欄的格線：

  • Receiver. Host name of the top receiver with the most failed connections.
    • 位置：欄位組成包含了合計城市排行以及其州/省、國家識別碼。
  • City. Top receiver's city.
  • Connection Attempts. Number of failed connection attempts.
  • Packet Rate. Total average packet rate.
  • Packet Percentage. Percentage of top n items ranked.

Several report columns do not appear by default and can be configured to display in this report. You can display the following additional report columns:

  • IP address. Receiver's IP address.
  • Hostname. Receiver's hostname.
  • Subdivision. Subdivision for the current city.
  • Country. Country for the current city.
  • Latitude. Degrees latitude associated with the current city.
  • Longitude. Degrees longitude associated with the current city.
提示: To show reports in full screen with most if not all possible columns, click on report options menu and choose Expand.

Generate a report

Choose source.Choose a networking device or single physical or virtual interface. Choose traffic direction across an interface.

Choose time constraints. Choose times. (Subject to NTA collection interval and retention policies.)Choose, filter, and reorder columns. Choose and hide columns, reorder columns, and apply advanced filters to customize your data view.

Chart, adjust output, and visualize. Apply chart, geo mapping (World Map), and display options in Report Settings dialog (optional).

  • 匯出報表資料

    您可以多種格式來將報表資料從 WhatsUp Gold 匯出、重複使用及發佈。從儀表板選項（）選單選取 [展開]（）。報表展開之後，選取「匯出資料」圖示來存取以下的選項：

    • HTML。產生並下載一個 .htm 檔案，以其顯示在 WhatsUp Gold 使用者介面中的形式來展示您的報表資料。
    • Excel。產生並下載一個內含您的報表資料的 .xml 試算表。
    • CSV：產生並下載一個內含報表資料的 .csv 檔案。
    • 文字：產生並下載一個內含報表資料的 .txt 檔案。
    • 排程匯出：設定報表資料匯出的週期性日期和時間、格式和電子郵件目的地。