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标题: [转载代码] [PowerShell每日技巧]通过安全日志查看错误的登陆尝试(20140113) [打印本页]
作者: DAIC    时间: 2014-1-17 13:27     标题: [PowerShell每日技巧]通过安全日志查看错误的登陆尝试(20140113)

Whenever someone logs on with invalid credentials, there will be a log entry in the security log.

Here is a function that can read these events from the security log (Admin privileges needed). It will then list all the invalid logons found in the log:
  1. # requires Admin privileges!

  2. function Get-LogonFailure

  3. {

  4.       param($ComputerName)

  5.       try

  6.       {

  7.           Get-EventLog -LogName security -EntryType FailureAudit -InstanceId 4625 -ErrorAction Stop @PSBoundParameters |

  8.                   ForEach-Object {

  9.                     $domain, $user = $_.ReplacementStrings[5,6]

  10.                     $time = $_.TimeGenerated

  11.                     "Logon Failure: $domain\$user at $time"

  12.                 }

  13.       }

  14.       catch

  15.       {

  16.             if ($_.CategoryInfo.Category -eq 'ObjectNotFound')

  17.             {

  18.                   Write-Host "No logon failures found." -ForegroundColor Green

  19.             }

  20.             else

  21.             {

  22.                   Write-Warning "Error occured: $_"

  23.             }

  24. 

  25.       }

  26. 

  27. }
复制代码
Note that this function can work remotely, too. Use the -ComputerName parameter to query a remote system. The remote system needs the running RemoteRegistry service, and you need local administrator privileges on the target machine.

http://powershell.com/cs/blogs/tips/archive/2014/01/13/finding-logon-failures.aspx



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