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Questions tagged [ssh-agent]

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How to return in normal mode in GCP VM after shield VM issue

After ugrading SSD size for a GCP VM, an integrity check issue occurs. This problem had been solve but my VM after many restart is always in emercy mode. I'm not able to SSH it. What is possible now ...
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Is there a way to repair SSH On GCP VM after shielded VM failure

I have a GCP VM on which is installed a Docker with Drupal. e2-medium with SSD 10Go After increasing the disk size to 20GB, I can no longer access the VM in SSH. My VM was failing to boot because of a ...
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18 views

ssh-agent lifetime refresh on use

I have an ssh key in ssh-agent set with a lifetime of 10 minutes. I want this 10 minutes to be the time since it was last used to successfully authenticate into a host. There's nothing immediately ...
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21 views

How to forward the .config file to remote host together with the agent?

I have a GitLab server configured on a non-standard port. I am using ssh protocol to clone and push, and I have configured the correct port entry in the .config file of ssh. Now, I need to connect to ...
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1 vote
1 answer
2k views

Pass password in ssh config

Is there any way to pass a password using .ssh/config? I'm trying to set up a way to login to a server under a specific user and then switch automatically to root when I connect (need to input ...
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1 answer
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ssh TOTP connection with jump host forwarding

How can I simplify this? Perhaps using agent forwarding? I have an SSH jump host with 2FA via TOTP x2 and a machine which uses 2FA as well(jump host and machine): ssh myuser@host.corp.com -L 22222:...
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1 vote
0 answers
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What is GPG equivalent of ssh-add?

When using password-secured SSH keys I can use ssh-add to preemptively unlock a key before it needs to be used and have it cached in ssh-agent for future use. What is a GPG equivalent of ssh-add? I ...
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1 answer
30 views

DigitalOcean Droplet ssh to use a named key

It's been a while since I've done this and configured ssh keys. I generated an ssh key with a different file name than id_rsa I have a DigitalOcean Droplet where I placed a named ssh key pair on ...
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509 views

The ssh agent cannot 'resolve hostname' when called from within a bash script

I have a bash script #!/bin/bash scp -r some_directory remote_host:~ which I made executable with chmod u+x. The remote_host has been defined in my .ssh/config as follows: Host remote_host HostName ...
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Is it safe to deploy without ssh-agent on GitHub Actions?

I see 2 options here, using ssh-agent: name: deploy on: [push] jobs: deploy: runs-on: ubuntu-20.04 env: USER_HOST: ec2-user@ec2... HOST_KEY: ec2... ecdsa-sha2-nistp256 AAAA...mXU=...
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  • 1,715
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1 answer
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How to specify identity when using SSH agent?

I've got a slightly unusual use-case... I'm using SSH via certificates, (where the authentication mechanism isn't just a signature from a private key, but also presentation of a signed cert). I have ...
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how to use ssh agent forwarding when loggin in to windows with bitvise WinSSHD?

I need to login from a linux machine to a windows machine (running bitvise sshd) and forward my agent socket (i.e. ssh -A user@windoze.box). "Normal" login works fine (either to PowerShell ...
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2 answers
203 views

Why isn't ssh-agent a background process by default?

I have always wondered why such a basic feature (loading ssh keys for persistent usage) requires a clunky command to execute in the background of a cmdline. Why isn't ssh-agent a service (for example) ...
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How to use Windows 10 OpenSSH ssh-agent service with Cygwin?

I'm using the Visual Studio Code Remote - SSH extension on a Windows 10 laptop to access a bunch of Linux development servers. I followed these instructions to set up the Windows built-in ssh-agent ...
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  • 183
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1 answer
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Avoid use of SSH agent

I use ProxyCommand with the intention of avoiding ssh agent forwarding. Today I noticed that Gnome was starting ssh-agent, which I'm trying to avoid using so I disabled it. I'd like to not have the ...
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  • 127
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1 answer
5k views

ssh-add returns "Error connecting to agent: No such file or directory" even though agent is running

Windows 10 20H2, build 19042.685 I'm trying to use the SSH agent in the built-in OpenSSH client on Windows 10. The agent is running: C:\Users\Daniel> Get-Service | ?{$_.Name -like '*ssh-agent*'} ...
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Check if ssh-agent forwarding is allowed on server with restricted permissions

How can I, as a user logged in to a remote server via ssh, check if ssh-agent forwarding is permitted on that server? Restrictions: The tool 'sshd_config' either doesn't exist on this system, or I ...
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1 answer
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automatic SSH login with ssh key's dont work after sudo

I have an Ansible server with 3 ubuntu servers (hosts). So i want to be able to logon to those servers by typing in the SSH key password once. I have edited my .bashrc with an alias. alias ssha='eval $...
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3 votes
1 answer
842 views

Does SSH allow jump host to access forwarded agent?

If I SSH to targethost via jumphost with agent forwarding enabled, will jumphost have access to my SSH key agent? ssh -A -J user1@jumphost user2@targethost Is this still secure, if I don't fully ...
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1 vote
0 answers
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SSH freezes after couple of lines printing

I am having this weird issue with a server whenever I try to open htop over ssh it hangs, ls works but ls -l hangs after couple of line if I execute history it hangs after printing 50+ line. But mosh ...
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2 votes
1 answer
156 views

How can I use different ssh keys for user1@host and user2@host, without resorting to aliased hostnames?

I have a remote CentOS server, lets pretend it's called hostname.com hostname.com has several user accounts, and I want to ssh into this server as any one of these users (using ssh keys rather than ...
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1 answer
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Reconnect automatically to a disconnected ssh session [closed]

I am new to this community , I am working on my iot project in which my microcontroller is working as a server, taking data and executing request. My client is end device (mobile,tablet) and I am ...
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8 votes
2 answers
2k views

How to prioritize explicit ssh key from commandline over ssh-agent keys?

I have a bunch of ssh keys loaded semi-permanently into ssh-agent. ssh-add -L lists 6 keys. I also have other keys which are stored separately; let's say, on a USB stick. I exactly don't want to keep ...
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  • 386
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2 answers
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Ansible not honouring `ssh-agent`?

I seem to be having a problem where Ansible isn't using my SSH agent cache. I've run the following: eval `ssh-agent` ssh-add /tmp/key Then I successfully log into one of the hosts from my inventory ...
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1 answer
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How to connect GCP, VM machine with WinSCP

I created Virtual machine (VM) instance in the GCP but unable to connect with WinSCP from the windows machine. I created on VM instance in the GCP then generated pub key by using command ssh-keygen ...
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1 answer
264 views

Using Password-Protected SSH Keys for Unattended Scripts on Remote Server

From PC1, I SSH into SERVER1 where I have a bash script, that will SSH & auth to SERVER2 using an SSH-key that's password-protected. Everything works fine when I manually execute my script, using ...
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1 vote
0 answers
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SSH agent forwarding not working on LSF when using BSUB

At my institute we have a cluster that runs LSF. Via this cluster, I want to connect to other computers/servers using Agent Forwarding. This works fine when I am on the login node, however when I am ...
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2 votes
2 answers
4k views

Running ssh-add from git bash using Windows 10's OpenSSH

I've setup OpenSSH following the 2019 Update of this question including setting GIT_SSH=C:\Windows\System32\OpenSSH\ssh.exe. Which works great, except when using when using git from git bash I get ...
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1 vote
1 answer
842 views

too many ssh-agent process per user on several servers [closed]

Several users seem to have problems with the usage of ssh-agent in their login environment. sri for instance has 1295 of them running on login02. And many other users are having same issue. I am ...
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1 vote
0 answers
845 views

Configure ssh-agent for TeamCity agent

I have TeamCity agents installed on a CentOS 7.3 server, and am trying to use the "SSH agent" build feature for a script that uses scp. However, it always fails due to a TimeoutException: [12:39:32] ...
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1 vote
1 answer
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SSH agent forwarding is not working when SVN+SSH

I'm trying to automate the deployment of an SVN repository (with a web app) over multiple production servers, without installing any private key on the servers. The SVN server is hosted on srv3, and ...
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1 vote
1 answer
395 views

Is there a way to do SSH password-less login when the server only allows keyboard-interactive authentication?

Suppose I've got a server foo.com which only allows keyboard-interactive authentication, and that I can't change this. This means I can do, sshpass -p PASSWORD ssh foo.com but I can't create public/...
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  • 111
0 votes
1 answer
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rsync not using the ssh-agent?

I have this running on gitlab ci, and it works for regular ssh (copied from the gitlab ci docs): eval $(ssh-agent -s) ssh-add <(echo "$SSH_PRIVATE_KEY") mkdir -p ~/.ssh echo -e "Host *\n\...
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  • 349
1 vote
2 answers
542 views

How to keep ssh-agent always runnning on Ubuntu server

I'm trying to set up backing up some folder from one server (target server) to another (backup server) using rsync. I also need to call rsync from backup server so it's easier to maintain backup ...
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2 votes
1 answer
646 views

SSH ignores key in agent and keeps asking for key decryption password

In my ssh_config, I have configured SSH to use a specific key when connecting to a host. I want SSH to try only this key, not any other key it may find (in ssh agent or some other location), so I ...
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1 vote
3 answers
856 views

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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3 answers
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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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0 votes
1 answer
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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 ...
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  • 161
1 vote
2 answers
623 views

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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1 vote
1 answer
2k views

Rewrite / Redirect Host With SSH Config File?

My company has three separate jump hosts. Something like: jump1.example.com, jump2.example.com, and jump3.example.com All internal servers must be accessed through these jumphosts: local ---> ...
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0 votes
1 answer
673 views

How to configure SSH agent to set user for second hop?

Is it possible to connect to a web server and then connect to a git server using SSH agent if the second hop needs a different user? It works if I pass in the user name explicitly. $ ssh web....
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  • 233
7 votes
3 answers
2k views

Force the use of a gpg-key as an ssh-key for a given server

I configured ssh to use GPG as my ssh-agent and if I remove the ~/.ssh folder, I can ssh into my server fine using my gpg key. However, my ~/.ssh folder has over a dozen different ssh keys in it, and ...
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2 votes
1 answer
1k views

force ssh to use agent, without fallback to directly accessing the IdentityFile

Company policy requires some ssh keys to be stored securely, e.g. on dedicated USB device. Using keys not stored on the host machine works flawlessly using gnupg with enable-ssh-support, even when ...
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-2 votes
1 answer
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ssh force user to user ssh-add

I am trying to understand how this functionality works. I have digital ocean account. I have given digital ocean an ssh public key to associate with any server that I spin up. Once I've created a ...
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  • 231
2 votes
1 answer
2k views

pssh and ssh-agent key forwarding via jump host

I'm trying to connect to a number of hosts using pssh in combination with a jump host and ssh-agent key forwarding. Unfortunately this fails quiet regular, but with different hosts failing on. So ...
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  • 553
0 votes
2 answers
1k views

Using virt-manager with seahorse instead of ssh-askpass?

On my Arch Linux virt-manager can not connect remote ssh and tells about installing ssh-askpass. As I wan't to use the gnome default seahorse, I was looking for a solution which I didn't find on the ...
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2 votes
2 answers
6k views

How can I check lifetime of SSH keys loaded to agent?

I'm using OpenSSH on Linux. For securioty reasons, when I load keys to agent, I use -t option, to limit time of availability of the keys (generally for 10 hours or so). Is there any way to list all ...
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0 votes
1 answer
385 views

ssh, agent forwarding stops working after a few days ...

I've been facing an interesting issue for a few weeks now. Part of our fleet is only reachable via a jump-host. In the past I had no issues w/ logging into the jump-host from my workstation using ...
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  • 1,037
13 votes
2 answers
5k views

In which order does OpenSSH try private keys?

I'm having a hard time finding proper docs on the order in which the OpenSSH client tries private keys for authenticating against a server, given that all of the following are present: key files with ...
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3 votes
1 answer
3k views

how ssh-agent process is increasing on every login

i have added the following line in my .bashrc file to start ssh-agent if it is not running. if [ -z "$SSH_AUTH_SOCK" ];then eval `ssh-agent -s`;ssh-add ~/.ssh/my_private_key;fi But every time when i ...
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