Powershell：获取远程计算机名称

Question

我了解要获取计算机名称，我们可以访问该服务器并通过cmd执行此命令。

但是可以通过IP地址获取远程计算机名称吗？所有这些IP地址都是内部ip。

Answer 1

这不是特定于PowerShell的问题或限制。这是非常常见的网络管理员要做的事情。

正如BACON所述，您可以使用nslookup，但Windows还提供.Net命名空间，而PowerShell为该用例提供DNS cmdlet。

它在Stackoverflow上也被问过很多次。在MS docs网站，TechNet，MSDN和其他博客上，这是非常有据可查的。例如

  

Powershell : Resolve Hostname from IP address and vice versa

# Find machine name from IP address:

$ipAddress= "192.168.1.54"
[System.Net.Dns]::GetHostByAddress($ipAddress).Hostname
Resolve Hostname to IP Address:
$machineName= "DC1"
$hostEntry= [System.Net.Dns]::GetHostByName($machineName)
$hostEntry.AddressList[0].IPAddressToString



<#
Resolve Hostname for set of IP addresses from text file:

Use the below powershell script to find machine name for multiple IP addresses. 
First create the text file ip-addresses.txt which includes one IP address in 
each line. You will get the machinename list in the txt file machinenames.txt.
#>

Get-Content C:\ip-addresses.txt | 
ForEach-Object{
    $hostname = ([System.Net.Dns]::GetHostByAddress($_)).Hostname
    if($? -eq $True) {
      $_ +": "+ $hostname >> "C:\machinenames.txt"
    }
    else {
       $_ +": Cannot resolve hostname" >> "C:\machinenames.txt"
    }
}


<#
Find Computer name for set of IP addresses from CSV:
Use the below powershell script to get hostname for multiple IP addresses from 
csv file. First create the csv file ip-addresses.csv which includes the column 
IPAddress in the csv file. You will get the hostname and IP address list in the 
csv file machinenames.csv.
#>

Import-Csv C:\ip-Addresses.csv | 
ForEach-Object{
    $hostname = ([System.Net.Dns]::GetHostByAddress($_.IPAddress)).Hostname

    if($? -eq $False){
    $hostname="Cannot resolve hostname"
    }

    New-Object -TypeName PSObject -Property @{
          IPAddress = $_.IPAddress
          HostName = $hostname
    }
} | 
Export-Csv 'D:\Temp\machinenames.csv' -NoTypeInformation -Encoding UTF8

Answer 2

还有一个非常简单的cmdlet Resolve-DnsName。

Resolve-DnsName 10.1.1.1

结果有很多细节。 NameHost是您想要的：

Name                           Type   TTL   Section    NameHost
----                           ----   ---   -------    --------
1.1.1.10.in-addr.arpa          PTR    3600  Answer     ServerName.DomainName.com