PS Remote session without passing credentials - powershell

I want to start a New-PSSession without having to pass credentials in a script. I know you can get the password from a file or have it hardcoded in the script and then convert it to a secure string to start the session. However, I want to start the session using the current user's credentials.
The machine I am trying to remote to is in the same domain.
I tried:
Enter-PSSession -ComputerName machineInDomain
Enter-PSSession : Connecting to remote server failed with the
following error message : WinRM cannot process the request. The
following error occured while using Kerberos authentication: The
network path was not found. Possible causes are:
-The user name or
password specified are invalid.
-Kerberos is used when no
authentication method and no user name are specified.
-Kerberos
accepts domain user names, but not local user names.
-The Service
Principal Name (SPN) for the remote computer name and port does not
exist. -The client and remote computers are in different domains and
there is no trust between the two domains. After checking for the
above issues, try the following:
-Check the Event Viewer for events
related to authentication.
-Change the authentication method; add
the destination computer to the WinRM TrustedHosts configuration
setting or us e HTTPS transport. Note that computers in the
TrustedHosts list might not be authenticated.
-For more information
about WinRM configuration, run the following command: winrm help
config. For more information, see the about_Remote_Troubleshooting
Help topic.
At line:1 char:16
+ Enter-PSSession <<<< -ComputerName machineInDomain
+ CategoryInfo : InvalidArgument: (machineInDomain:String) [Enter-PSSession],
PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed
Kerberos should pass the current user's credentials with trust if in the same domain.
Enter-PSSession -ComputerName $RemoteHost -Authentication Kerberos
Enter-PSSession : Connecting to remote server failed with the following error message
: WinRM cannot process the request. The following error occurred while using Kerberos authentication: The computer
$RemoteHost is unknown to Kerberos. Verify that the computer exists on the network, that the name
provided is spelled correctly, and that the Kerberos configuration for accessing the computer is correct. The most
common Kerberos configuration issue is that an SPN with the format HTTP/$RemoteHost is not
configured for the target. If Kerberos is not required, specify the Negotiate authentication mechanism and resubmit
the operation. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ Enter-PSSession -ComputerName $RemoteHost -Authentication Ke ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: ($RemoteHost) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed
It seems to be a domain problem.

Related

Powershell: Cannot create credentials file with for dot-slash user

I am trying to run a remote command to a computer which has a ".\".
When I am trying the credentials using get-credentials and storing them to a file, I am not allowed to do.
When I try to do using
$Username = -join($env:COMPUTERNAME,'\<user_name>')
$Password = '<password>'
$pass = ConvertTo-SecureString -AsPlainText $Password -Force
$Cred = New-Object System.Management.Automation.PSCredential -ArgumentList $Username,$pass
Invoke-Command -ComputerName <computer_name> -Authentication Kerberos -Credential $Cred {Get-WmiObject -Class Win32_LogicalDisk}
I get the following error
Connecting to remote server failed with the following error message : WinRM cannot process the request. The following error occured while using Kerberos authenticati
on: There are currently no logon servers available to service the logon request.
Possible causes are:
-The user name or password specified are invalid.
-Kerberos is used when no authentication method and no user name are specified.
-Kerberos accepts domain user names, but not local user names.
-The Service Principal Name (SPN) for the remote computer name and port does not exist.
-The client and remote computers are in different domains and there is no trust between the two domains.
After checking for the above issues, try the following:
-Check the Event Viewer for events related to authentication.
-Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or use HTTPS transport.
Note that computers in the TrustedHosts list might not be authenticated.
-For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.
+ CategoryInfo : OpenError: (:) [], PSRemotingTransportException
+ FullyQualifiedErrorId : PSSessionStateBroken
But when I do a mstsc and use the same credentials it works.
Please let me know the way around.
$env:COMPUTERNAME is your computer name!
Imagine I'm using ComputerA and wantning to connect to ComputerB as a local user on ComputerB.
Your code, as it currently stands is trying to connect as ComputerA\Username, which doesn't exist on ComputerB!
Can you try passing the username in below syntax?
$Username = -join('Localhost','\<user_name>')

New-PSSession - Connecting to remote server failed

I have two Windows 7 Pro systems, one host system and one in a VM one the host system. I am trying to create a New PSSession on the host system to control the guest, both of which run Powershell 4.0.
As we have a DHCP setup in the office the first thing I do is establish the IP adress of each. Then I run the code below on both machines -
Set-Item wsman:\localhost\client\trustedhosts "$relevantIP" -Force
I then test that the systems are ready using WSMan on the host -
Test-WSMan $remoteIP
wsmid : http://schemas.dmtf.org/wbem/wsman/identity/1/wsmanidentity.xsd
ProtocolVersion : http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd
ProductVendor : Microsoft Corporation
ProductVersion : OS: 0.0.0 SP: 0.0 Stack: 3.0
All this works perfectly well. At this point I used to create a new PSSession using the following
$credObject =
$Host.ui.PromptForCredential(
"Need credentials",
"Please enter password for the following IP $remoteIP",
$remoteUsername,
""
)
$remoteSession = New-PSSession -ComputerName $remoteIP -Credential $credObject
New-PSSession : [10.141.114.91] Connecting to remote server
10.141.114.91 failed with the following error message : The WinRM client cannot process the request. Default authentication may be used
with an IP address under the following conditions: the transport is
HTTPS or the destination is in the TrustedHosts list, and explicit
credentials are provided. Use winrm.cmd to configure TrustedHosts.
Note that computers in the TrustedHosts list might not be
authenticated. For more information on how to set TrustedHosts run
the following command: winrm help config. For more information, see
the about_Remote_Troubleshooting Help topic. At line:1 char:18
+ $remoteSession = New-PSSession -ComputerName "10.141.114.91" -Credential "SESA40 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession],
PSRemotingTransportException
+ FullyQualifiedErrorId : CannotUseIPAddress,PSSessionOpenFailed
I have no idea why it has started doing this when trying to connect to the VM from the host system. I can create a new PSSession on the host machine from within the guest but no longer the other way around.
The error message says that "Default
authentication may be used with an IP address under the following conditions: ... the destination is in the TrustedHosts list and explicit credentials are provided." I have already added the correspoding IP to each WSMan TrustedHosts fields and provide explicit credentials.
Any help would be greatly appreciated as I am scratching my head trying to think of what could be wrong.
Update
After following the suggestion of one commentor I tried using different authentification methods.
$remoteSession = New-PSSession -ComputerName "10.141.114.91" -Credential "Test" -ErrorAction Stop -Authentication Basic
The WinRM client cannot process the request. Unencrypted traffic is currently
disabled in the client configuration. Change the client configuration and try the request again.
So I ran set-item WSMan:\localhost\Client\allowunencrypted $true on both machines. Now trying to get a PSSession gives the error
Get-PSSession -ComputerName "10.141.114.91" -Credential "Test" -Authentication Basic
The WinRM client cannot process the request. If the authentication scheme is
different from Kerberos, or if the client computer is not joined to a domain, then HTTPS transport must be used or the destination machine must be added to the TrustedHosts configuration setting.
** Update 2 **
In case anyone has the same problem and comes across this - my problem turned out to be a combination of a network fault and then with my playing around somehow creating a list of IP addresses for wsman:\localhost\client\trustedhosts which missed a comma between IP's.

PowerShell Double Hop Issue

I’m trying to run a PowerShell script on SYSTEM1, which executes robocopy on SYSTEM2, copying files to SYSTEM3,4,5,etc.
SYSTEM1 and SYSTEM2 are on the same domain, but SYSTEM2 is not behind a firewall (hence the need to run robocopy from SYSTEM2 and not SYSTEM1).
SYSTEM3,4,5 are on different domains than SYSTEM2, as well as different domains than each other.
I set the script up like this (it uses the net use command to prompt the user for credentials for the different domains):
Foreach($server in $servers) {
$command = {
param($cred, $server);
$error.clear();
# Stored credentials in local variables
$user = $cred.GetNetworkCredential().username
$pass = $cred.GetNetworkCredential().password
#establish connection from SYSTEM2-> $server
net use \\$server\c$\Deployments /delete
net use \\$server\c$\Deployments /USER:$user $pass
# Check to see if C:\Deployments exists on server, and if not create it.
if ((Test-Path \\$server\c$\Deployments) -eq $FALSE) {
$c = {
New-Item \\$server\c$\Deployments -type directory
}
$ws = Invoke-Command -ComputerName $server -Credential $cred -ScriptBlock $c
}
# Copy over the deployment packages
$dest = "\\$server\Deployments\$DeploymentDate\$CurrentDirectoryName"
robocopy $CurrentDirectoryPath $dest /W:20 /R:15 /e /XF CopyPackage.ps1
# Delete connection from SYSTEM2 -> $server
net use \\$server\c$\Deployments /delete
However, the net use command returns an error after the credentials are entered:
The network connection could not be found.
+ CategoryInfo : NotSpecified: (The network con...d not be found.:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
+ PSComputerName : SYSTEM2
More help is available by typing NET HELPMSG 2250.
System error 55 has occurred.
+ CategoryInfo : NotSpecified: (System error 55 has occurred.:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
+ PSComputerName : SYSTEM2
The specified network resource or device is no longer available.
[SYSTEM3] Connecting to remote server failed with the following error message : WinRM cannot process the request. The
following error occured while using Kerberos authentication: There are currently no logon servers available to service
the logon request.
Possible causes are:
-The user name or password specified are invalid.
-Kerberos is used when no authentication method and no user name are specified.
-Kerberos accepts domain user names, but not local user names.
-The Service Principal Name (SPN) for the remote computer name and port does not exist.
-The client and remote computers are in different domains and there is no trust between the two domains.
After checking for the above issues, try the following:
-Check the Event Viewer for events related to authentication.
-Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or
use HTTPS transport.
Note that computers in the TrustedHosts list might not be authenticated.
-For more information about WinRM configuration, run the following command: winrm help config. For more
information, see the about_Remote_Troubleshooting Help topic.
+ CategoryInfo : OpenError: (:) [], PSRemotingTransportException
+ FullyQualifiedErrorId : PSSessionStateBroken
+ PSComputerName : SYSTEM2
The network connection could not be found.
+ CategoryInfo : NotSpecified: (The network con...d not be found.:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
+ PSComputerName : SYSTEM2
More help is available by typing NET HELPMSG 2250.
I’ve read this could be a “double-hop” issue (as detailed here), but I’m not sure how to edit the script to use CredSSP instead of Kerberos (or if this is even the problem).
Any ideas?
Posting this solution in case someone is still having an issue with a simple resolution to DoubleHop without using CredSSP.
Try this out:
https://www.powershellgallery.com/packages/Invoke-PSSession
It Invokes a PSSession, then Registers a PSSessionConfiguration with the Credentials that you provided. Basically providing the credentials for that DoubleHop
Then use Invoke-Command with that new PSSession. It should have the required privileges to do what you need.

Remote command failure even after unencrypted traffic is true

I am trying to open remote PSSession from one PC to another. Both PCs are in the LAN and reachable, but whenever I try to enter PSSession the following error occurs:
Enter-PSSession : Connecting to remote server pc2 failed with the
following error message : The WinRM client cannot process the request.
Unencrypted traffic is currently disabled in the client configuration.
Change the client configuration and try the request again. For more
information, see the about_Remote_Troubleshooting Help topic. At
line:1 char:1
+ Enter-PSSession -ComputerName pc2 -Authentication Basic -Credential admin
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (pc2:String) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed
I have set AllowUnencrypted to true in both
WSMan::localhost\Client
and
WSMan::localhost\Service
location on the remote PC, but still getting the same error. Are there other settings I need to update?

Cannot create remote powershell session after Enable-PSRemoting

I can not remote into any machine to save my life! I have tried everything I can find. If anyone could troubleshoot or guide me, I'd appreciate it as this would be a great tool to add on my domain.
SETUP:
Client machine inside domain
Server machine inside or outside domain - Virtualized and utilized for WSUS Computername: wsustest
CLIENT SERVER MACHINE physical- computername: epizzi-pc
STEPS:
enable-pssremoting done! on all machines
trustedhosts configured with * or client machine added
Firewalls with public profile off just in case
Enter-PSSession -ComputerName wsustest -Credential wsustest\administrator
Enter-PSSession -ComputerName epizzi-pc -Credential epizzi-pc\administrador
Enter-PSSession : Connecting to remote server epizzi-pc failed with the following error message : WinRM cannot process the request. The following error with errorcode 0x80090311
occurred while using Kerberos authentication: There are currently no logon servers available to service the logon request.
Possible causes are:
-The user name or password specified are invalid.
-Kerberos is used when no authentication method and no user name are specified.
-Kerberos accepts domain user names, but not local user names.
-The Service Principal Name (SPN) for the remote computer name and port does not exist.
-The client and remote computers are in different domains and there is no trust between the two domains.
After checking for the above issues, try the following:
-Check the Event Viewer for events related to authentication.
-Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or use HTTPS transport.
Note that computers in the TrustedHosts list might not be authenticated.
-For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ Enter-PSSession -ComputerName epizzi-pc -Credential epizzi-pc\administrador
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (epizzi-pc:String) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed
Enter-PSSession -ComputerName wsustest -UseSSL -Credential wsustest\administrator
*Enter-PSSession : Connecting to remote server wsustest failed with the following error message : WinRM cannot complete the operation. Verify that the specified computer name is
valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer. By default, the WinRM
firewall exception for public profiles limits access to remote computers within the same local subnet. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ Enter-PSSession -ComputerName wsustest -UseSSL -Credential wsustest\administrato ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (wsustest:String) [Enter-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : CreateRemoteRunspaceFailed*
ERRORs:
I was receiving the same problem when remoting to a server and found this blog post very helpful - http://jeffgraves.me/2013/10/14/powershell-remoting/
For my specific case I did the following:
On the Local machine
winrm quickconfig (although this was already configured)
winrm s winrm/config/client '#{TrustedHosts="myservername.domain"}'
On the Remote machine
enable-psremoting -force
Set-PSSessionConfiguration -ShowSecurityDescriptorUI -Name Microsoft.PowerShell -Force
I got around this problem by using a fully qualified logon. Instead of "netbiosdomain\accountname", I used fqdn\accountname, as in Microsoft.com\myaccount in the get-credential prompt. May not work for everyone, but it's worth a shot.
This is how I do it. I use this on my scripts.
# This is only done once
Read-Host -AsSecureString | ConvertFrom-SecureString | Out-File
c:\Windows\temp\securepass.txt
# Setup credentials
$SecureString = Get-Content c:\Windows\temp\securepass.txt | ConvertTo-SecureString
$mycredentials = New-Object -TypeName System.Management.Automation.PSCredential
-ArgumentList "yourDomain\userID",$SecureString
# Open remote session:
$MyRSession = New-PSSession -ComputerName Computer1 -Credential $mycredentials
-Authentication default
# Use remote session:
Enter-PSSession $MyRSession
Get rid of -UseSSL. I enabled PSRemoting and had problems with using that. I guess I could look at it later but for now it doesn't matter.
If there is no trust between the client and server computers, you have to enable basic authentication on the server side. Do this by toggling the correct properties on the WSMAN: drive on the server. You'll obviously have to do this interactively on the console or via remote desktop, due to the chicken and egg problem :) Also, this may come into play too:
http://www.nivot.org/blog/post/2009/10/30/PowerShell20EnablingRemotingWithVirtualXPModeOnWindows7
I was getting that same error currently no logon servers available.
The issue was resolved by using instead of Domain\Username as credentials the user UPN or Username#Domain.
I have achieved a remote session with Enter-pssession command, had to follow these exact parameters
$creds = get-credential (the -credential parameter in enter-pssession does not work properly, thus u must previously enter the object at another variable)
Enter-pssession -computername wsustest -authentication Default -credentials $creds
i Also had to set both client and remote server in the trusted hosts wsman: space
another solution which surely wouldve worked but i havent tried, wouldve been setting https: which is harder to do.
thx to all, your comments certainly led to the solution!