Questions tagged [ssh-agent]
ssh-agent is a single sign-on mechanism for SSH that is included in the OpenSSH software. Use this tag for questions on how to configure and use ssh-agent.
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alternatives to SSH_AUTH_SOCK for the command line
Are there alternatives to the SSH_AUTH_SOCK environment variable for passing agent info to ssh?
What I'm looking for is something like -o SshAuthSockPath="/path/to/socket" but nothing like that ...
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0answers
37 views
How to start a systemd service running in an ssh-agent?
The answer to How to start and use ssh-agent as systemd service? gets us a running ssh-agent. How can you write another systemd service file so that its process runs under that ssh-agent? In ...
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1answer
69 views
Weird behavior of SSH, not using proper key comment
I am using Ubuntu 18.04 LTS.
Whenever, I ssh-copy-id for the first time it puts my username@host at the end of the authorized_keys file line as expected.
On Remote machine:
sacredos@sacredos-DT:~$ ...
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1answer
29 views
Connecting to SSH authentication agent when running commands with sudo
I use etckeeper to keep my various OS configurations under version control. Until now, I was content to just use a local Git repository to keep track of changes but it occurred to me that I wasn’t ...
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1answer
26 views
How to go back to entering the ssh key password in the terminal
When I upgraded Ubuntu 16.04 to 18.04, one of the changes was that the password prompt to unlock my ssh key (from the agent) now is in a little GUI popup instead of at the terminal prompt. This is ...
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Ubuntu 16.04 - ssh-related commands open a GUI window to ask me for my SSH key password
Whenever I use commands like ssh user@server on the command line, I am not asked directly in the command line for my ssh key password, but in a new window (GUI). However, if I execute eval $(ssh-agent)...
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1answer
47 views
Repeated prompts for SSH private key password in single session
I have a private SSH key on a shared development server, which is secured with a password.
Even after loading it into ssh-agent, I get re-prompted for the private key password
For some reason, even ...
0
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1answer
306 views
How to automatically run “ssh-agent bash” and “ssh-add” when log in? [duplicate]
I have a scenario where, whenever a user logs into a CENTOS machine via SSH, I need to have the following commands run:
ssh-agent bash
ssh-add
[This other thread explains why I am using those ...
2
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1answer
140 views
How can I suppress host key checking with ssh-agent
I have a script with this snippet:
ssh-agent bash -c "ssh-add $SOME_KEY; \
git submodule update --init foo"
The script hangs while asking the user:
RSA key fingerprint is ...
0
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1answer
28 views
ssh-agent for nested tmux session
sessionA
sessionB
I start tmux in first window of sessionA but using this command to wake it: ssh-agent tmux that I expect new nested sessionB will have its own ssh-agent listen for it. And ...
0
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1answer
22 views
OpenSSH prompts for password for `~/.ssh/id_rsa` which is already in ssh-agent
When I attempt to SSH to a host, ssh still prompts for the password of the ~/.ssh/id_rsa key (Which was generated and exported from PuTTYgen), even though the password is already loaded in ssh-agent (...
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3answers
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ssh-add returns with: “Error connecting to agent: No such file or directory”
ssh-add alone is not working:
Error connecting to agent: No such file or directory
How should I use that tool?
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0answers
487 views
Error connecting to agent: No such file or directory when running ssh-add
I have an issue with my ssh-agent.
I am running on Manjaro with no DE, only with I3 WM.
I want than the ssh-agent start when I log in, to have only one ssh-agent running and to allow to KeepassXC to ...
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0answers
79 views
How to ssh-add elliptic curve key?
I'm trying to use a newly generated elliptic curve key with git version control for GitLab.
I am using a Xubuntu 16.04.
My OpenSSH version is: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g 1 Mar ...
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0answers
108 views
Agent forwarding and `sudo` vs `sudo -i`
Under an ssh -X -A localhost session, sudo xeyes opens the eyes but sudo -i xeyes does not.
~$ sudo -i xeyes
X11 connection rejected because of wrong authentication.
What extra step is needed in ...
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0answers
47 views
Agent forwarding and `sudo` vs `sudo -i` [duplicate]
Under an ssh -X -A localhost session, sudo xeyes opens the eyes but sudo -i xeyes does not.
~$ sudo -i xeyes
X11 connection rejected because of wrong authentication.
What extra step is needed in ...
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0answers
76 views
ssh-add: add_file: key_cert_copy: invalid argument
I get this error when running ssh-add. The command seems to work after this, but the return code is 127 (so a script runs into an error at this point). Does anyone recognize the error? Google doesn't ...
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0answers
674 views
Could not add card - Agent refused operation
I am on Ubuntu 16.04 and trying to add the certs on my CAC card using the ssh-add commands with no luck.
ssh-add -s /usr/local/lib/opensc-pkcs11.so
Enter passphrase for PKCS#11:
Could not add card "/...
5
votes
2answers
220 views
Why would pgrep not show my processes but sudo pgrep does?
I looked at a list of processes and filtered out ssh-agent which correctly shows the 3 processes I expected:
$ ps -ef | grep ssh-agent
belmin 1051 1 0 16:05 ? 00:00:00 ssh-agent -a /...
1
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1answer
295 views
Use my already running ssh-agent process
I have a bash session on tty2 and an ssh-agent process belonging to me (same user id) from a previous session (TTY = ?)
On tty2, ssh-add says :
Could not open a connection to your authentication ...
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0answers
171 views
How is my ssh key unlocked without ssh-agent? And how do I fix that?
I have an SSH key that I use almost every day and I recently noticed that I haven't had to unlock it in a long while. I don't always shut down my computer and so it is fairly common that ssh-agent is ...
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0answers
146 views
ssh-agent not launched but key is cached
I'm using linux(v14) and when machine is started ssh-add -l gives The agent has no identities. Then I check if process ssh-agent is launched with ps -aux | grep ssh-agent it clearly isn't.
Then I add ...
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votes
1answer
741 views
Who is starting my ssh-agent, and why won't it properly terminate?
This is a problem I've been having for a long time, but every time I try to figure something out I get lost, so I figured I'd better ask here where maybe someone more experienced could help me.
...
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2answers
71 views
Is it a security risk to let ssh-agent always use the same socket?
I use ssh-agent as a wrapper program for startx. Is it a security risk, to use always the same socket file?
ssh-agent -a /tmp/xyz123 startx
-a specifies the socket bind address. If not specified, it ...
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1answer
256 views
I want to gather the host keys but ssh-keyscan command is not found on my linux. Anyway to achieve the same with some other commands
I want to gather the host keys but ssh-keyscan command is not found on my linux. Anyway to achieve the same with some other commands without adding this command explicitly.
I am running with Wind ...
0
votes
1answer
40 views
What is the default number of login attempts before login fail
When I connect to a remote machine using ssh, my ssh agent will try all key files available in .ssh.
Per default, how many key files can the agent try for the log-in until server sends permission ...
5
votes
2answers
271 views
share ssh session/key with remote user
Assume the following setup:
User bob is working locally on his workstation foo.
User alice is working locally on her workstation bar.
User bob has ssh access to server baz:22 via a key stored at bob@...
1
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1answer
340 views
Loading OpenSSH certificate into ssh-agent without the private key
I'm storing my ssh keys on a yubikey and hence I don't have any private key file on disk. This gives me a problem when I'm also using OpenSSH Certificates to authenticate. If I would like to bring the ...
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0answers
899 views
ssh stuck after showing local version
I am trying to ssh to a different system from my Ubuntu, but it got stuck after this log
root@akash:~# ssh -vvv root@192.168.2.219
OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g 1 Mar 2016
debug1: ...
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1answer
49 views
ssh server : control ssh-key protection with password
On a server with strong access control, is it possible to ensure that all allowed key have a password protection.
is there a way to deny access to some key if they are no protected by password. I don'...
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1answer
87 views
Server rebooted, but client's old/stale SSH connection is still active
So I'm working on a little SSH call back solution for one of my boxes, and I'm having a slight problem that I barely know what to even look up to figure out what's going on.
Basically, the client ...
2
votes
1answer
849 views
How to ssh-add a SSH key without recreating a new instance of SSH agent?
I add the following in my .bashrc
ssh-add ~/.ssh/id_rsa
so when I open a new tab in my shell/terminal app (iTerm2 on macOS), it automatically add the SSH identity using the SSH agent and I don't ...
1
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1answer
228 views
Keychain ssh-agent overriding specified SSH key
I use GitLab repositories with two users (myself and a test user). For my test repository I have this in .git/config:
[core]
sshCommand = ssh -i /test-project/test_id_rsa
[remote "origin"]
...
0
votes
1answer
70 views
Does providing username once cause `ssh` to suddenly not asking for password anymore? [closed]
For a long time, I was baffled by why ssh command was asking for a password sometimes, and sometimes not. Even when I was using the same private/public key pair on many different clusters, I was ...
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2answers
63 views
Create ssh key pairs to copy elsewhere without messing up my personal ssh setup
In my Mac I already have a personal RSA key pair under ~/.ssh
I would like to create a couple of RSA keys in my Mac but for another computer. So I don't want to run some ssh command and replace my ...
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1answer
264 views
ssh-agent working with sshd in debug but not when running normally [closed]
I'm running into an odd issue with my CentOS7 hypervisor and VM where after copying keys over to the VM, I'm only able to connect without supplying a password if the sshd on the VM is running in debug ...
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0answers
44 views
Save IP in remote host every time connection is up (as non-root-user)
I have a dynamic local Lan IP at work (temporarily), but in order to connect from home, I ssh to the host A (static IP) and from there to my machine.
However, since the IP changes, I would like to ...
2
votes
1answer
491 views
What is the best way to share the SSH authentication socket with another user?
I'm using Ansible for setting up a remote server and I'm using SSH agent forwarding to git clone a repository from bitbucket.org to use my local SSH key, because I'm using sudo I'm preserving the ...
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0answers
219 views
Authenticate SSH session from detached screen session on Server to Other Server without password auth and without storing keys on Server
Summary: Is there a way to start (from a local computer) a data processing job on a remote server, which will itself need to download data over ssh in small batches over and over again from a ...
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1answer
988 views
How to NOT use ksshaskpass with ssh
When using ssh-agent I want to always enter my passphrase into a terminal, but ksshaskpass keeps popping up because the environmental variable SSH_ASKPASS is set, even though I'm not setting it ...
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2answers
756 views
Can't use OpenPGP key exported from GnuPG with SSH
I generated a PGP key with GnuPG over a year ago. Since I haven't had to really touch it since, I'm extremely foggy on the ins and outs of GPG (though I understand asymmetric key encryption in ...
7
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2answers
4k views
gpg-agent refuses SSH keys with ssh-add reporting “agent refused operation”
I'm using openssh7.5p1 and gnupg 2.1.21 on arch linux (these are the default versions that come with arch). I would like to use gpg-agent as an ssh agent. I put the following in my ~/.gnupg/gpg-...
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0answers
34 views
ssh-agent terminating on network change
My work computer is a painfully out of date Ubuntu 16.04 machine. I have it configured such that that lightdm invokes ssh-agent (not gnome-keyring-daemon) and ssh-agent invokes my session. This is not ...
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2answers
1k views
How to configure ssh-agent-forwarding?
Im struggling with setting up ssh-agent-forwarding.
What I want to do:
I want to have my public key on a ubuntu-server, the private key locally on my windows machine. I want to connect to the ubuntu-...
3
votes
1answer
532 views
How to organise SSH keys?
I've been creating multiple SSH keys in Debian for different accounts (namely Digital Ocean, GitHub, and Bitbucket), but it's getting messy very quickly.
Listing the contents in my .ssh folder, I get:...
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1answer
127 views
Connect to target host through intermediate host without preliminary sharing the keys
I have a very big amount of machines that are accessible only from the intermediate host. I can share my ssh-keys with the intermediate host, but there is no sense to preliminary share the keys with ...
4
votes
2answers
733 views
How can I get computer to remember SSH key passphrase between reboots?
I've found various solutions to cache SSH key passphrases using such methods as ssh-agent, keychain, gpg-agent and so on. They all seem to cache it per-login or per-session, so that every time you ...
2
votes
1answer
248 views
How can I prioritize a ssh Forwarded Agent over an Identity File?
I was previously able to connect to my a server with ssh agent forwarding:
ssh -A my.server
And from there connect to another host on the server's network that had my public key in the ...
3
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1answer
51 views
How to speed up ssh-agent?
I use ssh to log into many servers.
When running a script that does this, ssh-agent uses 100% CPU time. For small tasks on many servers ssh-agent is now the bottleneck.
Is there anything I can do to ...
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1answer
142 views
NX on a centos server and connect a windows 7
I have a centOS 6.5 server
cat /etc/*elease
CentOS release 6.5 (Final)
I tried to install the NX on it using this document https://wiki.centos.org/HowTos/FreeNX
This is how I install it because the ...
