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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37
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10answers
11k views

How do you get screen to automatically connect to the current ssh-agent when re-attaching to an existing screen?

If you start a screen session while ssh-agent is running (from ssh -A agent forwarding), accessing ssh-agent works fine. However, if you detach from that session, log out, log in again (with ssh-agent ...
36
votes
9answers
15k views

Sharing the same `ssh-agent` among multiple login sessions

Is there a convenient way to ensure that all logins from a given user (ie me) use the same ssh-agent? I hacked out a script to make this work most of the time, but I suspected all along that there ...
20
votes
3answers
4k views

How can I forward a gpg key via ssh-agent?

I can use the ssh configuration file to enable the forwarding of ssh keys added to ssh-agent. How can I do the same with gpg keys?
17
votes
3answers
11k views

How to make ssh-agent automatically add the key on demand?

I want to run ssh-agent (with maximum lifetime option), but not add any keys at startup, but instead add them on demand. Like first time I login to some server it should ask for passphrase, next time ...
17
votes
7answers
30k views

How to use SSH private key to log in without entering passphrase every time on Mac OS X Lion?

I use Mac OS X Lion and login remote hosts via SSH every day. Despite the fact that I use SSH key pair for remote authentication and I don't need to motorize every host's login phrase, it is still ...
17
votes
6answers
7k views

How can I get ssh-agent working over ssh and in tmux (on OS X)?

I have a private key set up for my github account, the passphrase to which is, I believe, stored in OS X's keychain. I certainly don't have to type it in when I open a terminal window and enter ssh ...
15
votes
2answers
25k views

Extra configuration required for ssh-agent forwarding?

This guide does a great job explaining how ssh-agent works across multiple systems. I'd like to get forwarding set up as it is in the last set of diagrams, but I'm having trouble tracking down the ...
15
votes
1answer
17k views

How do I clear out the ssh-agent entries (on Mac OS X )?

I'm running Mac OS X, and it appears that after SSHing to several machines, using identity files, my 'ssh-agent' builds up a lot of identity / keys and then sometimes offers too many to a ...
13
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2answers
2k views

How, if at all, do SSH keys differ from asymmetric keys used for other purposes?

How, if at all, do SSH keys differ from asymmetric keys used for other purposes, e.g. email signing? I'm prompted to ask this, in part, because on OS X, there are apps available to manage SSH keys ...
10
votes
2answers
8k views

Can't remove keys from ssh-agent. Even rebooting doesn't help

A short time ago I noticed that there were three keys in my ssh-agent that I could not delete. ssh-add -l showed three keys; I ran ssh-add -D, and was told "All identities removed."; but then an ...
9
votes
2answers
13k views

ssh-agent / ssh-add error: could not open a connection to your authentication agent

I type in ssh-agent and get the following back: SSH_AUTH_SOCK=/tmp/ssh-GqdeT074HLRJ/agent.4670; export SSH_AUTH_SOCK; SSH_AGENT_ID=4671; export SSH_AGENT_PID; echo Agent pid 4671; I then type in ...
9
votes
2answers
15k views

ssh-agent on MAC OS X Lion - sometimes it requests ssh password

Terminal V. 2.2.2 Mac OS X Lion 10.7.3 I've followed ipsis verbis the steps here: http://superuser.com/a/8110/72002 This works, BUT, if I restart the machine, it promps for the password again!!! ...
8
votes
5answers
13k views

Filezilla on Mac: SFTP with passwordless authentication?

I am trying to follow the instructions here for OSX http://wiki.filezilla-project.org/Howto I can successfully ssh to the target server with no username/password (OSX picks up my certificates from ...
8
votes
2answers
580 views

How to stick ssh-agent locking to the windows login?

Is it somehow possible to automatically unlock my private keys forr ssh authentication at windows login and (un)lock them when (un)locking my session? Currently I'm using msys' ssh-agent but could ...
7
votes
1answer
3k views

Using the IdentityFile directive in ssh_config when AgentForwarding is in use

Is it possible to specify forwarded keys using the IdentityFile directive in .ssh/config? I ran into this quirk when trying to deploy some code via Capistrano/GIT on our production server. Both my ...
7
votes
6answers
3k views

ssh-agent and screen

A while back on StackOverflow, I asked this question about ssh-agent and crontab. I have a similar question now about ssh-agent and screen on linux systems. So, on my Mac, ssh-agent launches at ...
5
votes
4answers
7k views

Remove Mac OS X SSH Passphrase Pop-Up

The ssh-agent on my Mac causes a pop-up for certain hosts: [me@my-laptop]$ ssh cargo2 Last login: Tue Aug 3 09:26:43 2010 from trainwreck.arlut.utexas.edu [me@cargo2]$ But for other hosts: ...
4
votes
2answers
2k views

tmux: Cannot SSH from inside tmux, even though I have agent-forwarding (ssh -A) on [duplicate]

So I have keys to some servers stored locally on my MacBook, but I work from inside a Virtual Machine a considerable amount of time, so I SSH to the VM with ssh -A. This allows me to SSH to servers ...
4
votes
1answer
1k views

ssh-agent key timeout with screen or tmux on bastion host

Normally I have ssh-agent running, I ssh to my bastion host then open a tmux session and connect to other boxes through that. Key forwarding works for any sessions that I open from that point ...
4
votes
2answers
4k views

Git — SSH Agent not working

The back story -- I've been using Git on this computer (Windows XP) for about 8 months with no problem. Suddenly, last week, it is no longer asking me for my username and password when I start Git up. ...
4
votes
1answer
8k views

Delete key from ssh-agent on Mac OS X 10.6

I'm trying to find a way to delete a single ssh identity from my Mac's ssh-agent, the ssh-add man page states the -d option does Instead of adding identities, removes identities from the agent. If ...
4
votes
1answer
3k views

Agent Forwarding Through Different Usernames (Git & Deployment)

This query isn't directly related to Git, but since one of Git's supported transports is SSH, and I'm trying to use agent-forwarding, I thought I would ask for clarification (the man pages have let me ...
4
votes
3answers
5k views

How to change the number of columns on a putty window to more than the screen width?

I am on windows and often have to ssh to linux machines. Though as much as I would love to have an alternate ssh client, none really comes part to Putty. One thing or the other always breaks, even in ...
4
votes
2answers
5k views

How can I retrieve my ssh passphrase from gnome-keyring?

I forgot the passphrase for my ssh private key, but it's still stored in gnome-keyring, so it seems to me that I should be able to recover it. Seahorse lets me recover web site passwords from my ...
3
votes
3answers
10k views

using puttygen generated public keys in unix environment? [duplicate]

Possible Duplicate: How to convert .ppk key to OpenSSH key *under Linux*? (unix, here: ubuntu 10.4) I know how to create ssh key pairs in unix (ssh-keygen) and how to do it in windows ...
3
votes
2answers
4k views

How to automatically add a protected key to ssh-agent on startup?

I am using gdm to start awesome wm via .xinitrc. I like awesomes usability and gnomes integrity and so far most of the startup programs work fine but i am fighting with ssh-agent. When starting gnome ...
3
votes
2answers
3k views

Use a specified key from ssh-agent

Along the lines of Tell git which private key to use I would like to use a specific ssh key in a given situation. My problem is that even when I specify '-i something' ssh uses the keys from my ...
3
votes
3answers
1k views

Problem with ssh-agent and/or Mac keychain on Mac

tl;dr: I have identities in the ssh-agent. All of those but one gets used; one gets added to agent and keychain when I use it, but then I get prompted for the passphrase again and again, as if the key ...
3
votes
1answer
1k views

How to save ssh identity settings in Snow Leopard?

I'm using ssh settings from my work machine on laptop at home for unattended git repository connection. I've copied private and public keys and use ssh-agent w/ ssh-add identity command. Is there any ...
3
votes
1answer
21 views

How to do SSH agent forwarding on Mac terminal?

I have checked many tutorials regarding this but not getting clearly. As per tuts, there are two way to configure for agent forwarding in your config file ~/.ssh/config set Host example.com ...
3
votes
1answer
425 views

Is it possible to have zsh+keychain+tmux not ask for keys?

I'm using tmux and zsh, and I've recently been learning about ssh-agent and keychain. From the manpage for zsh, it says that it will source .zlogin only if the shell is, well, a login shell. ...
3
votes
1answer
642 views

Can I make ssh-agent wait until I use ssh to prompt for a password?

I have ssh-agent set up to automatically start and prompt when I open a terminal window, as is explained here. It gets somewhat annoying though since many times when I open a shell I don't plan on ...
3
votes
1answer
2k views

openssh in Windows 7, run ssh-add once for all cmd instances

I have installed openSSH as part of the latest cygwin distribution. My goal is to use the ssh-agent from native window console (cmd) in order to login passwordless in a various number of Linux ...
2
votes
3answers
3k views

Why do I have to keep unlocking my SSH key?

I ran some X applications using ssh -Y my_address and now it asks me to unlock my RSA key every time I use it. I used to only have to unlock it once a day. What's going on? I'm using Ubuntu 9.04.
2
votes
1answer
750 views

How do I stop ssh-agent from forgetting my password after I login to the screen session from SSH?

I have a screen session open in an lxterminal window. If I SSH somewhere, the first time it happens, an ssh-agent window opens and asks me for my private key passphrase, and after that ssh goes right ...
2
votes
3answers
360 views

Is it possible to spawn an ssh-agent for a new tmux session?

I've seen lots of hacks for re-establishing contact with a GUI session's SSH agent from within tmux (and screen) sessions. I'm wondering if it's possible to de-couple from the GUI and spawn an ...
2
votes
3answers
410 views

Is it OK to put my password protected private key on the company lan?

I often have to use computers other than my own while at work, and it would be convenient to fire up pagent with my private key. Is it OK to put my passworded private key in a semi-trusted space?
2
votes
1answer
192 views

Use private keys only from ssh-agent, avoiding “Too many authentication failures”

I store all my private keys encrypted in encfs file. I mount (decrypt) encfs file to folder, add all private keys to ssh-agent with a lifetime flag and unmount folder. In this case my private key ...
2
votes
2answers
180 views

Automate Backups over SSH on a Linux Desktop

I currently have a setup which allows me to connect to all computers on my home network via SSH and RSA keys. I'm very security-conscious, so all of my keys are passphrase protected. I'd like to ...
2
votes
1answer
2k views

How to use ssh-agent (and graphic passphrase dialog) in Kubuntu 10.10?

I have recently switched from Ubuntu to kubuntu, both version 10.10. Unfortunately in KDE the ssh passphrase dialog doesn't work out of the box. Everytime my ssh private key is used I need to enter my ...
2
votes
0answers
100 views

ssh-agent installed with git 1.9.5 faults

I am getting a fault when running ssh-agent from windows 7. I think it could be a permission issue, though UAC is off. ssh-agent.exe SSH_AUTH_SOCK=/tmp/ssh-vDq8tk2Qlatv/agent.10256; export ...
2
votes
0answers
77 views

ant <scp> support for ssh-agent

I have an existing build.properties file that uses scp like this: <scp todir="${linux.user}@${linux.site}:@{todir}" keyfile="${ssh.keyfile}" passphrase="${ssh.passphrase}" trust="yes" ...
2
votes
0answers
525 views

Launchd not launching ssh-agent after plist edit

I'm trying to reconfigure my ssh-agent to have a timeout via the -t argument. I edited /System/Library/LaunchAgents/org.openbsd.ssh-agent.plist <array> ...
2
votes
1answer
486 views

Trouble implementing ssh-agent forwarding across ssh and then su

I've got a web server with a dedicated unprivileged user who runs the apache instance on the box. The php code for the app the web server runs is in a private github repo that I occasionally need to ...
2
votes
2answers
491 views

How to use ssh-agent.exe without cygwin for pass-phrase protected private key?

I would like to access a SSH service with pass-phrase protected private key in Windows using ssh-agent.exe. So far I able to utilize ssh-agent.exe by changing environment setting in my home account ...
2
votes
0answers
527 views

gpg-agent asks for ssh password, although the private key has no password set

I am using gpg-agent to manage my github ssh key. I generate my (private) ssh key via openpgpg2ssh from my private gpg key. Unfortunately, although my private gpg key is not password protected, ...
1
vote
1answer
23 views

ssh-add -D deletes keys on originating host

I have an ssh-agent running on my macbook. I use ssh -A and carry the keys forward to my redhat box. The thing that surprises me though is that when I do a 'ssh-add -D' on the redhat box, the keys ...
1
vote
1answer
167 views

Always being asked for passphrase

I have set up an RSA keypair using How do I set up SSH so I don't have to type my password? But I keep getting prompted for the passphrase Enter passphrase for key '/var/www/.ssh/id_rsa': ...
1
vote
1answer
718 views

What is the disadvantage to having SSH Agent forwarding turned-on globally

My SSH tool (SecureCRT) offers a config option to turn on Agent Forwarding for all SSH sessions. That seems to be helpful to prevent forgetting to enable it when required, but I'm wondering if there ...
1
vote
1answer
731 views

Which ssh-agent to connect to when setting SSH_AUTH_SOCK inside screen/tmux?

I am using a variation of the following line: export SSH_AUTH_SOCK=$(find /tmp/ssh-* -name agent.\* -uid $(id -u)|head -n 1) found over at Github. This way I should be able to use my forwarded ...