Questions tagged [ssh-keys]

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Please help trying to Generate sshkey Saving key "~/.ssh/id_rsa" failed: No such file or directory

So I have done this before, but for some reason after I factory reset my computer it fails to work. I followed directions. I first created a file named it CIS117KEY. Then opened a terminal. Per my ...
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Log in with either a password or a public key. But not both at the same time, and limit the PAM authentication to the root user

I am having difficulties configuring the ssh server. The scenario is as follows. The root user is the only one using google F2A (PAM), the restricted user only connects by password and the rest of the ...
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SSH key does not save permanently

Everytime my laptop connect to company's wifi, and committing/fetching something, git always pops error permission denied so I have to add the ssh key. The problem is that it doesn't effect ...
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How to debug ssh connection to remote user (when connection to root works fine)

I have an Xubuntu "Caller" and Fedora "Callee" in my garage. I'm setting them up to connect via SSH. Both are running OpenSSH, so the configurations are similar. I can connect as ...
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How to disable RSA and ECDSA keys in openssh-server on Fedora Linux

I read that RSA and EDCSA algorithms are inferior to Ed25519 in terms of speed and space, and for my small Beowulf cluster, I'd like to just use Ed25519. However, when I try to remove, truncate, or ...
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SSH-Keyscan Does Not Return a Key

I am trying to retrieve the ssh key from a Cisco Switch and get the following output: [root@localhost] ssh-keyscan -T15 172.20.10.11 # 172.20.10.11:22 SSH-2.0-Cisco-1.25 # 172.20.10.11:22 SSH-2.0-...
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Trying to setup SSH key pair for root

Setting up SSH keys for root (technically ed25519 keys). Created the key pair on server I want to logon FROM and put the pub key onto the authorized key file of the server I want to connect TO. I can ...
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GIT SSH keys gets "forgotten" the next day, sometimes

We use DevOps as git repository and I use Git GUI to generate an SSH key. I've used DevOps months without any issues, but as of recently, I've started to notice that my SSH key get's invalidated or ...
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SFTP connection hangs on "SSH2_MSG_KEXINIT sent"

I am struggling to connect via SFTP to my AWS test account from my on-prem server. When I cd into the directory where my private ssh-key and run sftp -v -i <private_key_file> <client>@<...
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OpenSSH sshd.exe does not start with KexAlgorithms parameter

Running OpenSSH Server 8.1p on Windows Server 2016 DC When I add the parameter "KexAlgorithms" in the sshd_config, the service fails to start. I want to add legacy support for key methods ...
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How can I use a U2F hardware authenticator to unlock a SSH key in a computer I am SSH'd into?

I have a number of computers on which I've generated a ed25519-sk SSH key all using the same U2F hardware authenticator (yubikey 5C NFC). I'm now in a situation involving three computers: X, Y, and Z. ...
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How to use OPENSSH private key to access server?

I received a private key in plain text format from someone. How do I save it to access server. It's in a format mentioned below. -----FOR SERVER! BEGIN OPENSSH PRIVATE KEY----- ...
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Ubuntu Connection closed by [preauth]

I have Ubuntu running on Windows (app) where I have created ssh key pair and added to Ubuntu server (Cloud) for the user. Whenever I try to ssh from Ubuntu Sandbox (Windows) to ubuntu server (Cloud), ...
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Need help wth error 'Permission denied (publickey,password)'

i am trying to ssh to a remote instance and i keep getting Permission denied (publickey,password) error. What is weird is that i am able to ssh into instance-01. I have pasted the verbose logs , would ...
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Can you use a private key on another host?

I am trying to clarify if an ssh keypair is secure in the sense that it can't be copied to another computer and utilized for a remote account. I thought they were machine specific and could not be ...
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ssh login failed with public key

I use publickey to do ssh login and failed. Here is my sshd config, sshd logs. sshd config: Port 1046 Protocol 2 PermitRootLogin no ChallengeResponseAuthentication no PasswordAuthentication no ...
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Still requiring ssh password after setting SSH Key on github

I switched my proxy client from ssr to clash for windows for some reason. Then I got an Error prompt of DNS changing of github.com in known_hosts while using git clone. So I deleted the item and git ...
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ssh keys: which is for whom and where are they supposed to be?

Having read about SSH key generation and installation, I am very confused by the idea, which I might have mistakenly gathered from all of the information: it is that a private key leaves the system on ...
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How can I connect to my SSH on DigitalOcean droplet? permission denied. (git bash Windows)

How can I connect to my droplet in DigitalOcean using the openssh to be able to install my SSL Certificate, I've already added my SSH key to the droplet and my fingerprint is there, but each time I ...
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Can't remove old SSH keys from connection Mac OS

Every time I connect via SSH, the agent will try non-existent keys: debug1: Will attempt key: /Users/user/.ssh/id_rsa debug1: Will attempt key: /Users/user/.ssh/id_dsa debug1: Will attempt key: /...
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How to SSH from MacOS terminal to Ubuntu 22.04. No matching host key type found

I'm not able to login to Ubuntu 22.04 which I newly installed from MacOS terminal. Here is the error I get while trying to SSH to ubuntu QWERTY-M-91FL:~ qwerty$ ssh mnbv@16.67.45.123 Unable to ...
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Why am I getting a bad signature for RSA key error with Rysnc crontab between Linux and macOS?

I'm trying to Rsync backups into another machine on a LAN. I've copied my key over and even using SSH manually, I get the following error, which keeps my crontabs from connecting: ...
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OpenSSH Won't Authenticate with Keypair

Problem When I try configuring key pair authentication to OpenSSH-Server running on Ubuntu, I am still prompted for a password. I've generated key pairs with ssh-keygen -t rsa and did not set a key ...
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unable to get ssh key working with gpg

Following this tutorial - https://gist.github.com/mcattarinussi/834fc4b641ff4572018d0c665e5a94d3 - I have configured an authentication key in GPG and started the gpg-agent with support for ssh. ...
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Permission denied (publickey). On Windows Subsystem for Linux

I am new to SSH and have been looking for a solution for this for long now. I am trying to connect to my uni's server that runs on Ubuntu from my WSL (I am using wsl2) via ssh. My Subsystem also runs ...
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Securest way to work with a remote GitHub repo on a multiuser Linux server

I'am currently working on a multi-user Linux server where i have a non sudo user. Also I have a GitHub account where I have a private Repo. Now I want to work with this repo remotely from the Linux ...
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ssh_config auto restored after some time

I need to connect to git using an ed25519 SSH key, but the /etc/ssh/ssh_config only has the entries below for IdentityFile, so I receive error Permission denied (publickey) when accessing the git repo:...
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GCP SSH keys add in console gives sudo user access, how can we avoid it?

There are two answers to my questions one is here and the other one is here. None of them answers my question. In here @John Hanley suggested me to add a user and put the public key manually in .ssh/...
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Cannot SSH to CentOS 7 even though I have the correct public key: "Permission denied (publickey)."

I am trying to setup SSH key authentication between two Linux servers: ServerA (RHEL) to SeverB (CentOS, the target). I have both files on my : -rw-------. 1 root root 1679 May 23 14:55 ...
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Ssh on a VM instance with different people (GCP/Linux)

I am able to ssh into a VM instance and launch scripts with cronjob Everything works good, set up .ssh/config on local machine: Host <host_name> Hostname <ip_adress> user &...
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Generating keypair for backend issuing JWT token

I need to generate a keypair for my backend to issue JWT token. I am using MacOS. I tried on terminal: ssh-keygen -t rsa and path to /Users/john.brk/my_rsa. It generates my_rsa and my_rsa.pub. When ...
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Use ssh-keygen on windows machine and use it on linux machine

We have a scenario when we need to generate ssh key with ssh-keygen on a windows machine and copy it to linux instance: echo -e 'y\n' | ssh-keygen -t rsa -f /tmp/temp -N '' >/dev/null 2>&1 ...
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1 vote
1 answer
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using a known host key with a reverse-tunneled ssh gateway

I'm using reverse tunneling to provide access to an SSH server via ProxyJump, but I'm having trouble getting the client to remember the host public key. Despite indicating it "permanently added ...
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Purpose of adding ssh identity file to ssh agent and keychain

I noticed that the Github instructions for adding an ssh key to your account say that you need to add the key to both your ~/.ssh/config file AND to the ssh agent with ssh-add https://docs.github.com/...
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PowerShell ssh wont stop asking for the password to the key I installed

I'm still being asked for my key password on login from a PowerShell session (Windows 10). These it turned out are the wrong param: ssh -o StrictHostKeyChecking=no or ssh -o "...
3 votes
1 answer
2k views

SSH with Dropbear: "Permission denied (publickey)"

I've create a RSA key pair with ssh-keygen. In /etc/dropbear-initramfs/authorized_keys I have the public key, and on my client machine I have the keypair in the /home/<name>/.ssh/ directory. ...
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SFTP with public and private keys

I want to use private and public keys for access to the SFTP server, instead of a username/password mechanism. SFTP server should be available only for a specific user that can log in from whatever IP ...
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1 answer
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ssh commands in cron jobs on remote server

It is known that cron and ssh-agent do not communicate and hence ssh commands cannot be trivially run under cron. There are solutions involving keychain etc that make it possible to do this. However ...
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Generate SSH keys for Windows server acting as client

I have an app, which will be run by AutoSys on Windows 2012 server. The app should send csv via SFTP to Linux server. Under which account should I generate SSH keys on the Win12 server?
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RSA key-pair failing for SSH connection

Password authentication works flawlessly, but I cant get the PubkeyAuthentication to work. This is what I ran. I added the options to force Pubkey authentication since that is the one that does not ...
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ssh keys for multiple accounts on one host

I have two accounts on a linux server and would like to have an ssh key for both of them. Do I need to make two keys, so that I can both ssh user1@server.url and ssh user2@server.url without needing ...
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SSH into Namecheap shared host

I'm trying to connect to my Namecheap shared host server via SSH I imported the pub/private key and authorized it like so: Let's VM IP = 11.11.11.11 When I SSH, I kept getting ➜ Desktop ssh webedcwp@...
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How do you successfully setup SSH so you can connect to the same host from two different clients?

There are a lot of posts about this type of stuff but I haven't been able to find an answer that works for me... I have an SSH server setup on a Ubuntu machine at home. I was able to setup no password ...
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1 answer
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SSH connection with Putty : Server refused our key

I'm having quite a hard time with ssh keys. To explain the context, I'm trying to ssh my VM (my computer is the client and the VM on it is the server). For now, it works using password authentication ...
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Authenticate against AD after ssh into Windows Server

Apparently after ssh into a Windows Server with a key-file the (domain) user is logged into the machine - but not authenticated against the AD Active Directory. So when when log4j tries to write a log-...
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Script SCP with public key

I need to configure a script to copy some files from one Ubuntu server to another. The key uses is allowed in the authorized_keys on remote server. I'm trying to configure this script: #!/bin/sh #...
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ssh hostbased access denied

Under Centos 7 with Selinux disabled, I can't connect through ssh with hostbased authentication. Server side : /etc/ssh/sshd_config : HostbasedAuthentication yes IgnoreUserKnownHosts yes ...
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Windows 11 - can't create a public key with SSH-Keygen

I am trying to create a key with ssh-keygen but none of the keys is considered fitting when I try to use in GitHub (unless I am getting it wrong). Posting examples below. This is my id_rsa file: -----...
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ssh connexion : Permission denied (publickey,password)

I'm trying to connect to my server with a ssh connection, so it works when I use FileZilla but not with the command line ssh <login>@<ServerIP> -i /Volumes/ExternalDisk/key.ppk I have this ...
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Passwordless ssh reverse tunnel suddenly asks for password?

This has me puzzled to no end, hopefully someone can clarify. I have a local server, LOCALSRV, and remote server (Ubuntu 20.04), REMOTESRV. On the local server, I've established a reverse ssh tunnel, ...
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