Questions tagged [ssh-keys]
an authorization mechanism for SSH involving public-key cryptography.
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Cisco IOS: Is it possible to SSH into a Linux server with PubkeyAuthentication?
I'm on a Cisco 2900 router running IOS ver 15.4. I have run show ip ssh and get the following:
SSH Enabled - version 2.0
Authentication methods:publickey,keyboard-interactive,password
Authentication ...
- 11
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2
answers
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How are hackers getting into our server without brute-force? [duplicate]
I am a web developer and we have no one specialising in the wellbeing of the server or the network currently at our office. Usually I can sort many of the issues that arise with my basic knowledge but ...
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SSH connect to a server: "Permission denied (publickey)." [duplicate]
I'm trying to connect to a remote AWS (Ubuntu) server using SSH and keep getting this error msg:
Permission denied (publickey).
On my local machine, under ~/.ssh/config I have this set:
Host ...
- 121
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1
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Cannot connect to my remote server via ssh
I'm trying to connect to a remote AWS (Ubuntu) server using SSH and keep getting this error msg:
Load key "/home/potatouser/.ssh/dashboard.pub": invalid format
Permission denied (publickey).
On my ...
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1
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Aws Ubuntu access lost, while creating new user
I had created a new user ( disable password command) on my instance. while giving him access somehow i have edited file at etc/ssh/sshd_config at line 33
#AuthorizedKeysFile %h/.ssh/authorized_keys
/...
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3
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Does SSHFS support ssh-agent forwarding?
I'd like to be able to mount my backup server on-demand by using my keys on my client terminal only as I don't leave my SSH keys on servers I manage.
Does SSHFS support ssh-gent forwarding and how?
...
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SSH: remove key authentication to setup a new one
I have a VM with an OpenSSH server running on it. I messed up my SSH server public key authentication setting (installed everything in my SSH session on the VM and not from an external terminal on my ...
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Google Cloud Services - unable to SSH into instance at all
I am unable to SSH into my instance on the Google Cloud Services.
I am not very well versed in VM management and troubleshooting, but have tried everything I knew, and google could provide to me ...
google-cloud-platform
0
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2
answers
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ssh-keyscan does not read .ssh/config?
I am using ssh-keyscan in a shell script to accept keys for hosts. The hosts are identified by hostname but not in /etc/hosts. They are in ./ssh/config so I can ssh <hostname> but I can not ...
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Why do SSH keys work for users `root` & `freebsd` but not `postgres` (database owner)?
I have been using FreeBSD running an a virtual machine at DigitalOcean.com.
I use Secure Shell (SSH) from my Mac to remote into a console session on the VM. I used ssh-keygen to create the pair of ...
- 881
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answer
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Verify authenticity of SSH host on Digital Ocean droplet (FreeBSD)
When first connecting via SSH with keys to a newly minted Digital Ocean droplet VM running FreeBSD (per this tutorial), we get a message about “The authenticity of host blah-blah can’t be established”....
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ssh key revocation list and -z version number
I've been reading about setting up an ssh certificate authority and controlling access via key revocation lists. And in the man page, it lists a -z option for specifying a version number for a key ...
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Jenkins is asking: do you trust this host, store key in cache
I installed Jenkins in our Windows Server machine and wanted to run some scripts that clones our private repo from bitbucket. In the script, all it does is to clone the repo in the appropiate ...
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Apaache Web Server On google compute Engine
I am getting this error when I try to connect to SSH
Connection Failed
An error occurred while communicating with the SSH server.
Check the server and the network configuration.
When I checked ...
0
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2
answers
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SSH host key pair expects passphrase causing ProFTPD to fail
I need to create a docker image with ProFTPD and use it as SFTP server.
Obviously I need SSH host keys for this to work but I don't want to create new keys every time I build the image.
If I create ...
0
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1
answer
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redo ssh private key
I switched laptops recently and didn't transfer my keys over correctly. I was trying to ssh into my dns server but unable to. When I would go to ssh in after sending a new key based on This tutorial,, ...
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Ssh Key authentication only works if I am physically logged into the server
UPDATE: This issue was caused by home directory encryption
I have a strange problem. I have created and installed keys and disabled password login for SSH. If I try to SSH to the server I get a "...
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3
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How to ssh between two ec2 instance with ssh keys?
I have two EC2 instances:
Serve 1, OS: Centos - 7.5
Serve 2, OS: Centos - 7.5
Default username: centos
Both are configured for passwordless login, so I have the ssh key with me.
I am able to ssh to ...
- 13
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1
answer
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SSH authentication sequence and key files : explain
As a background to troubleshooting various problems using SSH and rsync with key pairs, I wanted a straightforward overview of the sequence of events that takes place during SSH authentication, and ...
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Ssh key management in AWS like gcp
Google Cloud really Nails the SSH Key Management thing out of the box and AWS leaves it all up to you.
In gcp your gcp login credentials are also used for SSH access. gcp automatically creates SSH ...
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Back up using Duplicity through SCP with key-based authentication
I want to back up my system to a remote server through SCP using Duplicity. However, I use key-based authentication. How could I do this?
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How to view ECDSA host key of a server?
When getting a message like the following, how can I view the key of the server?
$ ssh example.com
Warning: the ECDSA host key for 'example' differs from the key for the IP address '10.0.0.2'
...
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Cannot ssh to ubuntu gcp instance
I migrated the vm from libvirt to Google Cloud Platform using Cloudendure. The initial sync is complete and is in Data Replication stage from over a week. Once the VM is launched using test mode and ...
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1
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SSH keys for utility services on remote production server
For convienience I'd like to have a private SSH key on my remote server.
But doing that creates a vulnerability if the server were hacked. Same as if I'd hard coded a password, anyone who broke in ...
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Ansible - wrong passphrase - even if it has to be correct
i am running ansible modules/playbooks (for example ping) with this command by user, who have sudo rights:
sudo ansible -m ping hosts
"hosts" is group of 2 hosts. When i run this, i'm asked for ...
3
votes
1
answer
817
views
Several ed25519 keys with the same prefix
I have created a bunch of ed25519 keys through ssh-keygen to connect to different machines I have access to. However, I noticed that all of them begin with the same, rather long prefix:
...
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28
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6
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Have a system that expires SSH keys every 90th day [closed]
I have a customer that now requires us to change every password every 90th day due to their interpretation of GDPR. That's fine for the web-based system we develop for them because we can just ...
- 280
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3
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Allowing SSH To use ssh-agent in bash script
I am working on recon for a set of systems my company is taking over and they use a different authentication method than we do. Specifically we use AD auth and a jump server to access systems where ...
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VPN connection for SSH access to a single publicly available
My goal is to have a VPN tunnel on a single port on a server's public IP and be able to SSH into the server with an additional VPN layer of encryption.
DETAILS OF THE SERVER CONFIGURATION:
I am ...
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1
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Require SSH key + Google Authenticator for one account, SSH key only for another
I am trying to setup an SSH authentication structure, but I'm struggling with issues in /etc/ssh/sshd_config vs /etc/pam.d/sshd.
Requirements:
Accounts with root/sudo privileges
require public key ...
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How to use socket file to access server if SSH Agent forwarding is enabled
I have bastion host. I connect to the bastion host using username/password. And I have private key for destination Server. Flow:
Local Machine -> Bastion -> Destination
I know that It's ...
- 161
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EC2 ssh 'authenticity of host can not be established'
There are a lot of questions on ServerFault and StackOverflow about the problem of 'authenticity of host can not be established'. For instance:
https://stackoverflow.com/questions/2360842/ec2-ssh-...
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How do you securely retrieve the ssh host keys from a google compute engine instance?
I want to update my ~/.ssh/known_hosts with the host key information for a newly created GCE instance. But I'm not sure how to securely retrieve that information.
I thought something like
gcloud ...
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2
answers
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AWS EC2: Can't log into instance
A few days ago, I created a new key pair for a client's AWS EC2 instance. For some reason, I could no longer log in with the prior key pair I created. Immediately after creating a new SSH key pair, I ...
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How to use ssh client without local OS login
I have server-like machines (they are not workstations, fully automated) and I need them to be able to run a script that opens a client ssh connection (to a 3rd party server such as github), and I ...
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2
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Securely sharing SSH access in a team with SSH bastion
I need to share SSH access to a number of servers with my teammates and looking for a secure way to do it. I came up with a configuration involving a SSH bastion server, but not sure how (and if) it ...
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Lost connection with ssh server through web console ssh (GCP, Putty, gcloud terminal, Filezilla)
After a year using the VM instance in debian, we changed the ssh keys to connect to other computers, after having generated the pair of public and private keys with putty, and adding it to the ...
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SSH Public Key Management for a small team
I'm setting up a deep-learning workstation in my college's lab. It's running Ubuntu Server 16.04 and I set up a SSH server in it, to control it remotely.
My task now is to make it available for my ...
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Using SSH keys from backup on another machine to access server
I created a server, and configured SSH to not allow root login and disable password access, so only accepts an SSH key to login.
I have a machine A with a key, and I can access my server from that ...
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SSH from Mac to CentOS hangs forever when using a certain domain
I've been running a CentOS server on Google Compute for about a year. I SSH in every day without a problem. Suddenly, when I try to ssh in, the command just waits and waits and waits... After ...
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ssh connects okay from command line but from cron using publickey
To rsync (incremental) from remote server (Centos 6.x) to local client (Ubuntu 18.04) I copied the public key I created from client to server to execute rsync without password.
...
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How to set up authorized keys for dropbear local to openssh remote
I have a local machine running dropbear and I want to connect to a remote host running openssh without having to type the password every time.
I have found lots of documentation on how to do the ...
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find ssh2 key fingerprint
How do I find the ssh fingerprint of a ssh2 key ? With a ssh-1 key I can do ssh-keygen -lf /path/to/keyfile. However when I convert the same key to a ssh2 key using ssh-keygen -e -f keyfile.pub > ...
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How to generate host SSH keys via ansible?
I'm trying to re-generate ssh host keys on a handful of remote servers via ansible (and ssh-keygen), but the files don't seem to be showing up. The playbook runs OK, but the files on the remote are ...
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Setting up public key authentication to Linux server from Windows (ppk private key)
I created a public and private key using PuTTYgen and copied the public key to .ssh/authorized_keys under my user account.
Then I try to specify the private key when trying to log in, but apparently ...
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0
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SSH copy key from Raspberry Pi to Linux
I am trying to create a new ssh key, and copy it to a server, using a previously generated ssh key.
/usr/bin/ssh-copy-id -f -i /home/pi/.ssh/newKey -o "IdentityFile=/home/pi/bob" [email protected]
The ...
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SSH into remote host using jump box
I have a current setup for my servers like below:
My computer ---> Jump box -----> Target server in private network
I connect to the jump box from my computer using command
ssh -A jumpbox
...
2
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1
answer
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Recovering or regenerating lost AWS EC2 Key Pairs
AWS rookie here. I created a few EC2 instances under my AWS account and reused the same Key Pair for all of them. I believe (IIRC) that I had generated the Key Pair from inside AWS, but that could be ...
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How to get Terraform to see the identity when using KeeAgent?
I am creating servers on AWS using Terraform on a Windows machine and that is working great. When they are created I want to install docker on them. However, after creating them, the SSH connection ...
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How to tell SFTP which public key to use?
SFTP has an option "-i" to set the private key to use for public key authentication. However, there does not appear to be an option for which matching public key to use. Surely it must need this to ...
- 351
Related Tags
ssh × 608
linux × 129
ubuntu × 63
amazon-ec2 × 49
public-key × 48
ssh-agent × 44
ssh-keygen × 43
amazon-web-services × 38
security × 36
ssh-tunnel × 33
centos × 30
authentication × 30
git × 30
rsa × 23
debian × 22
ansible × 21
putty × 19
rsync × 18
private-key × 16
windows × 15
sftp × 14
password × 13
known-hosts × 11
more related tags
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