Bad owner or permissions on ssh config windows

What is the difference between telnet and SSH?

Telecommunications and Networks are abbreviated as Telnet, and it is a networking protocol best known for the UNIX platform.

Telnet is credited as being the first Internet, having been created as a method of remote control for managing mainframe computers from remote terminals when the Internet originally opened in 1969.

While there is no official fix for bad owner or permissions on the SSH config problem, many users have reported that removing inherited permissions has worked for them.

Additionally, there are numerous lines of commands that might fix the issue and are available on the web and in the forums.

The fix for a bad owner or permissions on the SSH config problem can vary in steps depending on the process type.

Let us know whether you were able to fix the bad owner or permissions on the SSH config in the comments section below.

Источник

Fix Bad Owners or Permission on .ssh/config

Due to the comfort and control that SSH gives us, we try to implement methods such as Password-less logins using SSH keys and two-factor authentications. However, despite this, we can still encounter errors that might prevent us from using SSH to log in to remote machines.

This quick tutorial will show you how to solve bad ownership or permission on the .ssh/config file.

Pre-Requisites

Before we get started on the guide:

• Ensure you have a private and public key
• Ensure your public key is available in the authorized_keys file of your remote machine.

If you do not have either of the requirements above met, consider the following tutorial where I detail how to generate and copy SSH key-pairs.

What Causes Bad Owners or Permission Errors?

The bad owner or permission error on the .ssh/config file results from incorrect permissions either on the file itself or the .ssh directory.

The files in the .ssh directory should have the read and write permission of the user only; that does not include the group or others.

How to Fix Bad Owner and Permission Errors

To solve this error, all we need to do is set the correct permissions on the .ssh/config file.

If you are not that comfortable with Linux permissions, check out this intuitive tool for using chmod.

To set the correct permissions, use the command:

Once you execute the above command, the file permission should be as follows:

You can also use the chown command to upvote the owner of the file using the command:

Using these two methods, you should have the bad owner or permission error fixed, and you can proceed to log in to your SSH.

Conclusion

That was a short and quick guide on resolving .ssh/config bad owner or permission error. If you are looking for a more in-depth tutorial, check out the following SSH troubleshooting guide.

John Otieno

My name is John and am a fellow geek like you. I am passionate about all things computers from Hardware, Operating systems to Programming. My dream is to share my knowledge with the world and help out fellow geeks. Follow my content by subscribing to LinuxHint mailing list

Источник

Bad Owner or Permissions on SSH Config Windows 10

Lately, I have been working a lot with SSH and Windows 10, for one transitioning away from WMI for certain things, hopefully, a blog post coming on that front soon. Setting up SSH on Windows 10 is fairly simple to do, but it is one of those processes that can be wrought with missteps and misinformation from various places. As a case in point, you may receive permissions issues on a private key connecting to Windows 10. Why is this? Let’s take a look at bad owner or permissions on SSH config Windows 10 and see what this relates to.

Public key authentication with Windows 10

First of all, if you see this error mentioned in the title of the blog post, it means you are most likely attempting to configure public key authentication to access your OpenSSH installed and configured in Windows 10. Why do you want to configure public key authentication?

First of all, if you want to know how to configure Windows 10 SSH, take a look at my blog post here:

Also, learn about OpenSSH in general here:

Public key authentication is noted as a more secure way to authenticate to an OpenSSH server. Why is this? With public-key authentication, you have two parts of a cryptographic key that grants access. It includes both a private key and a public key. The SSH server possesses the public key of the key pair, while you as the user possess the private key. In addition to passing the physical private key file, you can also secure the private key with a password.

So, it is easy to understand how this type of authentication is much more secure. As far as the cryptographic key is concerned, an attacker can’t simply brute force the server to guess a weak, guessable, or cracked password to gain access. They have to have possession of the key and know the password if the private key is secured with one.

SSH clients have also come a long way in recognizing when there may be bad ideas in play when it comes to private key files. If the permissions contain other security permissions on the private key file other than the user that should possess those permissions, the key can be more easily compromised.

Many SSH clients check for the permissions configured on the SSH private key and if these are too permissive, it will not be allowed for use to make the SSH connection. Note the following error seen when trying to SSH into a remote Windows 10 machine with wide-open permissions on the private key file:

The error above states the issue: Permissions for the key file are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored.

Bad Owner or Permissions on SSH Config Windows 10

To get past the Bad Owner or Permissions on SSH Config Windows 10 error, you need to configure three things:

• Permissions on the authorized_keys file
• Permissions on your private key file
• sshd_config file changes

Permissions on the authorized_keys file

Part of the process to properly configure your Windows 10 SSH session for public-key authentication is ensuring the permissions are set correctly, both on the authorized_keys file (holds public key) and the private key file that holds the private key side of your key pair. Let’s take a look at both.

When you enable OpenSSH on your Windows 10 machine, you need to create the .ssh directory in the user profile of the user you will be logging in with. This is the location OpenSSH looks to find the authorized public keys, and by extension, the paired private keys that are allowed to access the machine.

By default, when you create the directory and the authorized_keys file, it will have too many permissions assigned. As you can see, it will have the local Administrators group added to the file. Click Advanced.

Here, we need to disable inheritance. This breaks inheritance on the folder and allows you to set explicit permissions.

Choose the option Convert inherited permissions into explicit permissions on this object.

Adjust your permissions so that you only have SYSTEM and your username displayed as having permissions on the authorized_keys file.

Permissions on your private key file

Now, on your private key, you need to ensure the same thing is set. The user that you are logged in with and SYSTEM are the only permissions that need to be enumerated on the private key file.

sshd_config file changes

Now that we have the permissions set correctly on the authorized_keys file and the private key, we need to make sure the sshd_config file is configured correctly. We need to make three changes for this to work correctly:

Below, I have uncommented the PubeyAuthentication yes stanza. Then, we have commented out the PasswordAuthentication yes and Match Group administrators configuration.

Be sure to restart your OpenSSH SSH Server service on your Windows 10 machine after making these changes to the sshd_config file. Once the changes are in place, you should be able to connect to the machine via SSH.

Wrapping Up

Connecting to Windows 10 via SSH is a great way to make secure connections to Windows 10 when public-key authentication is used. It can also be a great way to use solutions like Ansible to connect to your Windows 10 boxes remotely.

My blog:
https://www.virtualizationhowto.com
_____________________________________________________

Social Media:
https://twitter.com/vspinmaster

Introduction to home lab automation tools I use — 0:00
Hashicorp Packer — what it is and what it does — 1:05
Looking at Packer and a demo of running the command — 1:46
Talking about Packer and how it fully automates operating system installation — 2:20
Introduction to Terraform, what it does, and how you use it — 2:54
Looking at executing Terraform, state files, and configuration — 3:53
Introduction to PowerShell, background, and what it does — 5:08
Introduction to PowerCLI module for PowerShell and how PowerShell is extensible — 5:44
Looking at installing the PowerCLI module — 6:14
Using PowerShell and PowerCLI with Visual Studio Code — 7:04
Introduction to Ansible and configuration management with Playbooks — 7:37
Looking at an inventory file, the Ansible ping command — 8:46
Running an Ansible Playbook to update Linux VMs — 8:56
Wrapping up and thoughts on automation tools in the home lab — 9:20

Building an Ubuntu 22.04 template with Packer:

Automated Windows Server 2022 Packer Build:

Terraform vSphere tutorial — Linux Virtual Machine Clone:

Ansible provisioning VMware VMs:

https://www.virtualizationhowto.com/2021/01/ansible-provisioning-vmware-with-vmware_guest-example/» data-video-title=»Best Home Lab Automation Tools! Packer, Terraform, PowerShell, and Ansible»>

My blog:
https://www.virtualizationhowto.com

Social Media:
https://twitter.com/vspinmaster

Introduction — 0:00
Where storage technology has come over the years — 1:05
Looking at where storage has come in 2022 — 1:45
Elimination of the two-tier storage approach — 2:23
Storage Pool and all devices configured in vSAN storage are capacity and performance — 2:48
Log Structured File system with efficiency improvements — 3:21
Encryption and compression are repositioned and more efficient with vSAN 8 — 3:38
Beginning configuration of the Express Storage Architecture — 4:03
Launching the configure vSAN storage wizard — 4:29
New default is the Express Storage Architecture ESA — 4:41
Services configuration — 4:57
Claiming disks for vSAN ESA — 5:08
I don’t have certified drives but we can still install — 5:23
Enabling Express Storage Architecture with a single disk from each host — 6:00
Creating fault domains — 6:40
Reviewing the configuration — 6:55
vCenter Server tasks kick off in vSphere Client — 7:13
Disks are added to hosts in the vSAN Cluster — 7:34
Looking at disk management — 8:00
Discussing viability of ESA for home labs — 8:33
Concluding thoughts with vSAN Express Storage Architecture and home lab thoughts — 8:53

Configure vSAN Express Storage Architecture ESA:

Upgrade to ESXi 8 in three ways:

VMware vSphere 8 Download links:

https://www.virtualizationhowto.com/2022/10/vmware-vsphere-8-download-links-for-esxi-8-and-vcenter-server-8/» data-video-title=»VMware’s Killer new storage in 2022! Single drive vSAN Express Storage Architecture home lab»>

My blog:
https://www.virtualizationhowto.com
_____________________________________________________

Social Media:
https://twitter.com/vspinmaster

Introduction — 0:00
Going over the typical vCenter Server installation method — 1:05
Relies on vCenter Server or ESXi host — 1:36
Deploy the VCSA appliance from the ISO file — 2:00
Looking at the OVA appliance — 2:14
Describing an error I received deploying the vCenter Server appliance — 2:52
Describing a change needed to successfully deploy a modified OVF template — 3:00
Using the OVFtool to create an OVF tool to deploy vCenter Server — 3:42
Converting the OVA to OVF process — 4:14
The OVF file is successfully created — 4:40
Navigating to the directory where we created the OVF — 4:52
Editing the OVF file — 5:15
Searching for the change we need to make — 5:30
Opening the modified OVF appliance file — 6:35
The wizard kicks off for phase 1 in the deployment of the VCSA appliance — 6:52
EULA — 7:19
Name the VM and storage location — 7:25
VCSA sizing — 7:30
Networking configuration — 7:36
SSO configuration — 8:07
System configuration — 8:17
Domain search path — 8:22
Completing the phase 1 and import begins — 8:36
VCSA booted and navigating manually to the VAMI interface — 9:10
Familiar vCenter Server installer interface from the VAMI interface — 9:33
Clicking Setup box — 9:50
Verifying the network properties — 10:05
Changing time synchronization and SSH access property — 10:15
SSO configuration — 10:25
CEIP options — 11:09
Summary screen — 11:19
Warning about disrupting the process — 11:29
Phase 2 begins — 11:50
VCSA appliance successfully deploys — 11:58
Wrapping up talking about VMware Workstation for home lab — 12:10

Upgrade to ESXi 8.0 in three ways:

VMware vSphere 8 download links:

William Lam’s blog post covering the error for vCenter Server 8 and VMware Workstation:

https://williamlam.com/2022/10/how-to-deploy-the-vcenter-server-appliance-vcsa-8-0-to-vmware-fusion-or-workstation.html» data-video-title=»Install vCenter Server 8 in VMware Workstation! Step-by-step process and error workaround»>

Источник