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ssh 登入無效 (HPUX 11iv2)

Microsoft.ACS.HPUX.11iv2.Ssh.Invalid (Rule)

收集 ssh 登入無效事件的規則

Knowledge Base article:

摘要

在系統記錄檔中偵測到無效的 ssh 要求。

原因

使用者並未獲得存取遠端系統的權限。 此監視可讓系統管理員追蹤 'ssh' 的使用狀況。

解決方式

警示及/或輸出資料項目的描述包含所發生事件的資訊。 如果此活動似乎有問題，請檢查相關聯的事件詳細資訊，以及與此事件同時間發生的其他任何事件。

Element properties:

TargetMicrosoft.ACS.HPUX.11iv2.ACSEndPoint
CategoryEventCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Unix.SCXLog.Privileged.Datasource Default
WA WriteAction Microsoft.ACS.Unix.SecureEventLogWriter Default

Source Code:

<Rule ID="Microsoft.ACS.HPUX.11iv2.Ssh.Invalid" Enabled="true" Target="Microsoft.ACS.HPUX.11iv2.ACSEndPoint" Remotable="true">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="EventDS" TypeID="Unix!Microsoft.Unix.SCXLog.Privileged.Datasource">

      <Host>$Target/Host/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$</Host>

      <LogFile>/var/adm/syslog/syslog.log</LogFile>

      <!-- [TYPE] HP SSH False -->

      <!-- [INPUT] Nov  6 11:43:08 scxhpi10 sshd[26676]: error: PAM: No account present for user for illegal user kalle from scxhpr3.scx.com -->

      <!-- [INPUT] Nov  6 14:17:09 scxhpr3 sshd[21156]: error: PAM: No account present for user for illegal user kalle from scxhpi10.scx.com -->

      <!-- [EXPECTED] date="Nov  6 11:43:08"; hostname="scxhpi10"; process="sshd"; processId="26676"; user="kalle"; clientHost="scxhpr3.scx.com" -->

      <!-- [EXPECTED] date="Nov  6 14:17:09"; hostname="scxhpr3"; process="sshd"; processId="21156"; user="kalle"; clientHost="scxhpi10.scx.com" -->

      <RegExpFilter>sshd[[:space:]]*\[[[:digit:]]+\][[:space:]]*:[[:space:]]*error:[[:space:]]*PAM:[[:space:]]*No account present for user for illegal user[[:space:]]+[^[:space:]]+[[:space:]]+from[[:space:]]+[^[:space:]]+</RegExpFilter>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="ACS.Unix!Microsoft.ACS.Unix.SecureEventLogWriter">

      <RegExp>(?'date'\S+\s+\d+\s+\d+:\d+:\d+)\s+(?:\S+:)?(?'hostname'\S+)\s+(?'process'sshd)\s*\[(?'processId'\d+)\]\s*:\s*error:\s*PAM:\s*No account present for user for illegal user\s+(?'user'\S+)\s+from\s+(?'clientHost'\S+)</RegExp>

      <EventType>0</EventType>

      <EventId>27003</EventId>

    </WriteAction>

  </WriteActions>

</Rule>