Questions tagged [ssh-agent]

SSH-agent is an utility which offers a secure way of storing the passphrase of the private key used in SSH connections

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Windows11 ssh-agent does not remember passphrase

I am facing the issue that my running ssh-agent is not remembering my private key passphrase. It keeps prompting to enter it, each time I open an SSH session. I cannot figure out why and hope somebody ...
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Why is ssh-agent not starting?

When I type the command $eval "$(ssh-agent -s)" to start ssh and be able to register my keys I get the following error: 1 [main] ssh-agent 437 dofork: child -1 - forked process 628 died ...
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Single ssh agent on windows box

I use: Putty MobaXterm Windows native ssh ssh from cygwin Do you have any idea how to make all product to use a single agent?
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SSH agent will not start on login

I've got an issue where ssh-agent does not start automatically on login. I have tried writing a service, configuring a systemd autostart script and a bunch of other things. Another thing I've noticed, ...
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Where does ssh-Agent stores passphrase?

I added the passphrase of my ssh to the ssh-agent 4 months ago (i followed a random superuser.com question to do so) Since this, I restarted my laptop and so on but I have never been asked to enter my ...
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SSH isn't using “~/.ssh/config” in macOS 13.1 (Ventura)

After quite a long time between reboots, I did one. After rebooting I was working on some code hosted on GitHub, however > ssh -T MY_USERNAME@github.com MY_USERNAME@github.com: Permission denied (...
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Access YubiKey when using a remote desktop with tools such as OpenText Exceed TurboX?

This blog post describes how one could retrieve an SSH key stored within a YubiKey device (physically connected to machine A) within a machine B, when there is an ssh session from A to B. So assuming, ...
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Starting ssh-agent from a script for use in multiple scripts (invoked by git)

I have some homepages in a git repository each. They are built by Jekyll. When I change something, I use git's pre-push hook to let Jekyll build the page and sync it with my HTTP server via rsync. ...
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ssh-agent on mac shows old identity

I migrated my data from my old mac to a new machine. This copied the .ssh directory, so ssh-add -L showed my old identity. I decided to remove that using ssh-add -D, then created a new identity using ...
rje's user avatar
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ssh-add error with signed keys

I have a problem with ssh-add which is returning 'invalid format' on Mac osx. I created a private key with ssh-keygen and I signed it with a CA to have an ephemeral short live certificate to be used ...
Gianluca Volpe's user avatar
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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. ...
Kevin Huntly's user avatar
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ssh-add does not allow adding or deleting any keys

I am using Windows 10 v20H2, with OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2. The ssh-agent service is running, but I cannot get ssh-add to do anything productive. I did initially add a key, which ...
James's user avatar
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Is there a way to tell SSH which key to select from an agent, without referring to the public/private key files?

Context I have multiple SSH keypairs. Currently I handle that by having a collection of keys in ~/.ssh (password-protected of course), and in ~/.ssh/config I have Host sections with the right ...
Ben's user avatar
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get_agent_identities: ssh_agent_bind_hostkey: communication with agent failed

I'm trying to pull to a git repo (with SSH remote url) on a remote server. On my home PC I have an SSH agent running: PS user@PC> ssh-add -L ssh-ed25519 ...
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ssh agent forwarding not working on Windows

Same ask as ssh agent forwarding on Windows 10, but on Windows 11. When I ssh from my Linux client with AgentForwarding enabled into a Windows 11 host, I cannot access the client keys on the host: C:\...
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ssh-agent no longer working

I used to execute eval $(ssh-agent -s) from git bash. It would give me a message and all was fine. Today, it's no longer outputting anything and a ps -ef | grep ssh yields no results. It's like ssh-...
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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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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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2 votes
1 answer
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ssh-add does not prevent to enter the key's password when using OpenSSH on Windows

I have an RSA SSH key with a passphrase on Windows 11, with OpenSSH. I tried to add it to the agent: C:\code> ssh-add -k C:\Users\user\.ssh\id_rsa Enter passphrase for C:\Users\user\.ssh\id_rsa: ...
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Adding ssh key in WSL permanently

I am relatively new to Linux. Using Ubuntu on WSL2. I added a private key for github with no passphrase using ssh-add. I used it a few times throughout the session but the next day I couldn't connect. ...
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Can `ssh-agent` somehow interface with Windows' built-in "keychain"-like functionality?

tldr; Does OpenSSH integrate with Windows, so that on unlocking Windows ssh-agent will "unlock" its password-secured private keys? On macOS and in Linux you usually have some kind of ...
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SSH authentication using gpg-agent and another source for keys?

tl;dr: Is there a way to either disable the persistent import functionality of gpg-agent or work around that to allow using different sources for SSH keys? Situation I use GnuPG 2 keys (on a YubiKey) ...
Thomas Luzat's user avatar
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How to use Putty with Windows openssh-agent?

I've upgraded my Windows OpenSSH to the latest version (https://github.com/PowerShell/Win32-OpenSSH/releases/) in order to get it accept my RSA key. Now i can add my key e.g. with ssh-add private.key ...
T-Regex's user avatar
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multiple ssh keys in one file with single passphrase

I have multiple ssh keys. Each time I reboot I have to do ssh-add for each of them and type passphrases to unlock each one. Is it possible to store all the in one container file which is added and ...
krokodil's user avatar
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1 answer
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Prevent SSH key to be automatically added to agent

Is there a way to prevent a certain SSH key to be automatically added to an SSH agent while all others are automatically added? For example, assume all my keys are protected by a passphrase. I would ...
Max Maier's user avatar
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6 votes
1 answer
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Why SSH always using first key accepted by server?

I have three SSH key pairs that can be found via ssh-add -L; two keys are accepted by the remote server, but only one key can be used for GitHub, and I want to clone a GitHub repository via agent ...
shvv's user avatar
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ssh-add not working for some hosts

My ~/.ssh/config: Host github.com HostName github.com IdentityFile ~/.ssh/some_rsa IdentitiesOnly yes Host * IdentityFile ~/.ssh/some_rsa I know that this doesn't make any sense since it's ...
rwms's user avatar
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3 votes
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Inserting ssh-agent into i3wm's startup so it's available to all processes in the session

I use the i3wm window manager on Fedora, and the urxvt-mld terminal dæmon for my multipl urxvt-mlc terminal clients. My problem is that I want just one ssh-agent for my entire session, and for the ssh-...
RoUS's user avatar
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Key caching in SSH forwarding

What I want to achieve is to connect to server A and execute a script that connects to multiple other servers (serially) and perform a task on each. While I can perform that task using ssh -A, the ...
jimkont's user avatar
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2 answers
2k views

Excuting ssh-agent results in 'mkdtemp: private socket dir: permission denied'

I am unable to ssh from Windows 10 into a Linux machine using key pairs. The following is in the log debug3: unable to connect to pipe \\\\.\\pipe\\openssh-ssh-agent, error: 2 debug1: pubkey_prepare: ...
lordhog's user avatar
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Adding a key with "ssh-add" works but passing it with "-i" doesn't

I have a case like follows: ssh -J${some-jump-host} -i some-key.pem opc@${some-ip} which does not ask for the key password for some-key.pem but directly fail as it is not authenticated. However, if ...
ozgeneral's user avatar
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ssh-agent not persistent after some amount of time (no reboot)

I am using Suse 12 on VM, it is left running and never off/rebooted. I use TCSH and would call > eval 'ssh-agent -c' > ssh-add > <put passphrase here> And then ssh login to servers/...
mohdyusuf's user avatar
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1 vote
0 answers
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Windows 10 ssh-agent don't want password after system restart

I've activated ssh-agent service on my Windows 10 machine and set it to start automatically at boot. Next, I've added my ssh keys to agent using ssh-add and during this process ssh-agent asked for ...
Shargan's user avatar
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285 views

ssh-agent forwarding through proxy locks up ssh connection

So I have a weird ssh problem with agent fowarding I'm trying to debug. I have a number of machines inside a firewall I can access via proxy, or directly if I'm connected inside the firewall. ...
Chris Dodd's user avatar
2 votes
2 answers
3k views

Ssh through bastion host (jump host)

Can somebody give me a one liner ssh command which can connect to remote host through bastion host (jump host). I am not interested in updating ssh config. I have tried below command but didn't work. ...
Deepak Janyavula's user avatar
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246 views

SSH key password only asked for once

I have created a public/private key pair and logged into my server with it. I have also copied it to the server under a user. It asked me for the password when logging in the first time but it doesn't ...
Whiteclaws's user avatar
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1 answer
156 views

How to avoid neccessity to re-enter password during schell script execution

I am working on a shell script performing recurring tasks of git commit git push mvn release:prepare mvn release:perform in a couple of paths of a JAVA software project. Now each of these commands ...
WolfiG's user avatar
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1 vote
1 answer
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how to identify the connected client pid/tty from inside tmux

I'm using a long running tmux session on my workstation. Sometimes I have to connect to this workstation by ssh from my laptop. I take my ssh private key stored on a YubiKey with me. Means the Yubikey ...
grunix's user avatar
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0 answers
1k views

`Permission denied (publickey)` when key is added to SSH-Agent via Bash script

On both my mobile device and Raspberry Pi (coincidentally AArch and ARM CPUs respectively), ssh-agent is not loaded by default. I first have to start the ssh-agent: eval `ssh-agent -s` I then ...
jimjamz's user avatar
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How to fix my ssh key not being forwarded to a specific server

I have a local host L and two remote servers S0 and S2. I can get ssh keys to be forwarded to S0 but not to S2. What's going wrong? See below for details: L = dev29 S0 = testserver0 S2 = testserver2 ...
Olivier's user avatar
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1 answer
257 views

ssh-agent keeps asking for password

I am trying to use ssh-agent to not have to type in my password every time I use an SSH key. I am following the instructions / guides but I still am asked every time for the password - how is this ...
Svarto's user avatar
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1 vote
0 answers
2k views

Visual Studio Code Remote-SSH Windows 10 ssh-agent.exe issue

I installed the Remote-SSH add-on in VS code. I was able to connect to my server which uses key encrypted login with a passphrase. This included using Windows 10 ssh-agent as described here: https:/...
Thomas's user avatar
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3 votes
1 answer
3k views

Why must I use $("ssh-agent") everytime I want to pull/push from a git remote repository?

Each time I want to pull or push to a remote Gitlab repository, it gives me the following error: **> sign_and_send_pubkey: signing failed: agent refused operation Permission denied (publickey). ...
Everac's user avatar
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0 votes
1 answer
395 views

Prompted for key password when key is in ssh-agent

In an old shell session, the number of ssh keys in ssh-agent tends to be large enough to fail authentication with the server, simply because the client just throws keys at it, FIFO fashion. It seems ...
chb's user avatar
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32 votes
9 answers
166k views

ssh: Error loading key "./id_rsa": invalid format

For some reason one of my ssh keys "just broke" - it just stopped working: $ ssh-add ./id_rsa Error loading key "./id_rsa": invalid format Copying the key inside a clean VM, the key does work. Even ...
FlorianLudwig's user avatar
1 vote
0 answers
630 views

Could not open a connection to your authentication agent. Agent is running, has keys, and is forwarded

My configuration for accessing parts of my cloud have seemingly failed, and I can not seem to understand what is going wrong. My SSH agent is running, my private key has been added, and I've ...
Matt Clark's user avatar
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Avoid using remote identity file when using ssh on remote server [duplicate]

I'm connected to serverA with SSH. I have one identity file on my local computer, which I use to authenticate to serverA, and one identity file on serverA which I use when I'm at that computer ...
Lars Nyström's user avatar
1 vote
1 answer
2k views

SSH login hangs in MacOS Sierra but not in Linux environment

The command below hangs when I attempt to connect to SSH server from Mac OS client. However, it works perfectly fine in Linux env. $ ssh -vvv master@172.18.0.2 -p 22 OpenSSH_7.4p1, LibreSSL 2.5.0 ...
BentCoder's user avatar
  • 111
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0 answers
179 views

Have gpg-agent start with ssh key file when available, falling back to gpg keys?

On linux (Fedora) using bash, I have setup the GnuPG gpg-agent to act as the ssh-agent successfully. When authenticating over ssh, the agent tries the gpg keys first then falls back to the ssh keyfile ...
John's user avatar
  • 101
2 votes
1 answer
682 views

ssh-agent rendered unusable after single use

I'm using Ubuntu 18.04 on WSL (Windows 10 1803, Build 17134.112), and lately I've noticed an issue with ssh-agent. When I start up a shell, before connecting to anything over SSH, I first call ssh-...
FallenWarrior's user avatar