我试图检查端口是否打开使用PowerShell,如下所示。
(new-object Net.Sockets.TcpClient).Connect("10.45.23.109", 443)
此方法有效,但输出不是用户友好的。这意味着如果没有错误,那么它就具有访问权限。有没有办法检查成功并显示一些消息,如“端口443是否可操作”?
如果您运行的是Windows 8 / Windows Server 2012或更高版本,则可以在PowerShell中使用Test-NetConnection命令。
例如:
Test-NetConnection -Port 53 -ComputerName LON-DC1
扫描关闭端口时,它会长时间无响应。将fqdn解析为ip时似乎更快:
[System.Net.Dns]::GetHostAddresses("www.msn.com").IPAddressToString
我以几种方式改进了Salselvaprabu的答案:
像这样称呼它:
Test-Port example.com 999
Test-Port 192.168.0.1 80
function Test-Port($hostname, $port)
{
# This works no matter in which form we get $host - hostname or ip address
try {
$ip = [System.Net.Dns]::GetHostAddresses($hostname) |
select-object IPAddressToString -expandproperty IPAddressToString
if($ip.GetType().Name -eq "Object[]")
{
#If we have several ip's for that address, let's take first one
$ip = $ip[0]
}
} catch {
Write-Host "Possibly $hostname is wrong hostname or IP"
return
}
$t = New-Object Net.Sockets.TcpClient
# We use Try\Catch to remove exception info from console if we can't connect
try
{
$t.Connect($ip,$port)
} catch {}
if($t.Connected)
{
$t.Close()
$msg = "Port $port is operational"
}
else
{
$msg = "Port $port on $ip is closed, "
$msg += "You may need to contact your IT team to open it. "
}
Write-Host $msg
}
实际上,Shay levy的答案几乎是正确的,但我在他的评论栏中提到了一个奇怪的问题。所以我将命令分成两行,它工作正常。
$Ipaddress= Read-Host "Enter the IP address:"
$Port= Read-host "Enter the port number to access:"
$t = New-Object Net.Sockets.TcpClient
$t.Connect($Ipaddress,$Port)
if($t.Connected)
{
"Port $Port is operational"
}
else
{
"Port $Port is closed, You may need to contact your IT team to open it. "
}
您可以检查Connected属性是否设置为$ true并显示友好消息:
$t = New-Object Net.Sockets.TcpClient "10.45.23.109", 443
if($t.Connected)
{
"Port 443 is operational"
}
else
{
"..."
}
使用最新版本的PowerShell,有一个新的cmdlet Test-NetConnection。
实际上,此cmdlet可以ping一个端口,如下所示:
Test-NetConnection -ComputerName <remote server> -Port nnnn
我知道这是一个老问题,但是如果你点击这个页面(正如我所做的那样)寻找这些信息,这个添加可能会有所帮助!
我试图改进mshutov的建议。我添加了将输出用作对象的选项。
function Test-Port($hostname, $port)
{
# This works no matter in which form we get $host - hostname or ip address
try {
$ip = [System.Net.Dns]::GetHostAddresses($hostname) |
select-object IPAddressToString -expandproperty IPAddressToString
if($ip.GetType().Name -eq "Object[]")
{
#If we have several ip's for that address, let's take first one
$ip = $ip[0]
}
} catch {
Write-Host "Possibly $hostname is wrong hostname or IP"
return
}
$t = New-Object Net.Sockets.TcpClient
# We use Try\Catch to remove exception info from console if we can't connect
try
{
$t.Connect($ip,$port)
} catch {}
if($t.Connected)
{
$t.Close()
$object = [pscustomobject] @{
Hostname = $hostname
IP = $IP
TCPPort = $port
GetResponse = $True }
Write-Output $object
}
else
{
$object = [pscustomobject] @{
Computername = $IP
TCPPort = $port
GetResponse = $False }
Write-Output $object
}
Write-Host $msg
}
如果您使用的是旧版本的Powershell,其中Test-NetConnection不可用,则以下是主机名“my.hostname”和端口“123”的单行:
$t = New-Object System.Net.Sockets.TcpClient 'my.hostname', 123; if($t.Connected) {"OK"}
返回OK或错误消息。
mshutov和Salselvaprabu的精彩回答。我需要一些更强大的东西,并检查所提供的所有IP地址,而不是只检查第一个。
我还想复制一些参数名称和功能而不是Test-Connection功能。
此新功能允许您设置重试次数的计数,以及每次尝试之间的延迟。请享用!
function Test-Port {
[CmdletBinding()]
Param (
[string] $ComputerName,
[int] $Port,
[int] $Delay = 1,
[int] $Count = 3
)
function Test-TcpClient ($IPAddress, $Port) {
$TcpClient = New-Object Net.Sockets.TcpClient
Try { $TcpClient.Connect($IPAddress, $Port) } Catch {}
If ($TcpClient.Connected) { $TcpClient.Close(); Return $True }
Return $False
}
function Invoke-Test ($ComputerName, $Port) {
Try { [array]$IPAddress = [System.Net.Dns]::GetHostAddresses($ComputerName) | Select-Object -Expand IPAddressToString }
Catch { Return $False }
[array]$Results = $IPAddress | % { Test-TcpClient -IPAddress $_ -Port $Port }
If ($Results -contains $True) { Return $True } Else { Return $False }
}
for ($i = 1; ((Invoke-Test -ComputerName $ComputerName -Port $Port) -ne $True); $i++)
{
if ($i -ge $Count) {
Write-Warning "Timed out while waiting for port $Port to be open on $ComputerName!"
Return $false
}
Write-Warning "Port $Port not open, retrying..."
Sleep $Delay
}
Return $true
}
把它煮成一个衬里将变量“$ port389Open”设置为True或false - 它快速且易于复制以获取端口列表
try{$socket = New-Object Net.Sockets.TcpClient($ipAddress,389);if($socket -eq $null){$Port389Open = $false}else{Port389Open = $true;$socket.close()}}catch{Port389Open = $false}
如果你想真的疯了,你可以归还整个阵列 -
Function StdPorts($ip){
$rst = "" | select IP,Port547Open,Port135Open,Port3389Open,Port389Open,Port53Open
$rst.IP = $Ip
try{$socket = New-Object Net.Sockets.TcpClient($ip,389);if($socket -eq $null){$rst.Port389Open = $false}else{$rst.Port389Open = $true;$socket.close();$ipscore++}}catch{$rst.Port389Open = $false}
try{$socket = New-Object Net.Sockets.TcpClient($ip,53);if($socket -eq $null){$rst.Port53Open = $false}else{$rst.Port53Open = $true;$socket.close();$ipscore++}}catch{$rst.Port53Open = $false}
try{$socket = New-Object Net.Sockets.TcpClient($ip,3389);if($socket -eq $null){$rst.Port3389Open = $false}else{$rst.Port3389Open = $true;$socket.close();$ipscore++}}catch{$rst.Port3389Open = $false}
try{$socket = New-Object Net.Sockets.TcpClient($ip,547);if($socket -eq $null){$rst.Port547Open = $false}else{$rst.Port547Open = $true;$socket.close();$ipscore++}}catch{$rst.Port547Open = $false}
try{$socket = New-Object Net.Sockets.TcpClient($ip,135);if($socket -eq $null){$rst.Port135Open = $false}else{$rst.Port135Open = $true;$socket.close();$SkipWMI = $False;$ipscore++}}catch{$rst.Port135Open = $false}
Return $rst
}