How To Fix Linux Public Key Authentication Not Working (Solved)

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Linux Public Key Authentication Not Working


This means that network-based brute forcing will not be possible against the passphrase. Reason: hint about identical usernames added doc.nice View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by doc.nice 05-12-2009, 09:13 PM #8 chrism01 If you are not willing to do that, then still follow this guide, but also check the bullet point below. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed have a peek here

If the client can prove that it owns the private key, a shell session is spawned or the requested command is executed. I am able to connect but only with interactive password authentication, not with my rsa key that I have setup. On Ubuntu or Debian machines, you can issue this command: sudo service ssh restart On CentOS/Fedora machines, the daemon is called sshd: sudo service sshd restart After completing this step, you've The utility will connect to the account on the remote host using the password you provided.

Passwordless Ssh Not Working Linux

Last edited by chrism01; 05-14-2009 at 08:37 PM. Did I cheat? In particular, try to ensure that you use RSA keys since DSA is know to be compromised. ssh authentication share|improve this question asked Oct 19 '11 at 19:27 Andrew Redd 90731531 2 First check that all three of ~, ~/.ssh and ~/.ssh/authorized_keys are only writable by you

Browse other questions tagged ssh public-key authorized-keys or ask your own question. I have already verified that the key is listed in ~/.ssh/authorized_keys. When using the vi editor, use shift-j to join the lines and erase the extra space in the key string. Authentication Refused: Bad Ownership Or Modes For Directory Browse other questions tagged 12.04 server ssh key sshd or ask your own question.

You might be able to identify your problem this way. share|improve this answer edited Feb 26 at 14:26 muru 71.3k13130181 answered Mar 7 '12 at 12:48 tohuwawohu 4,14111430 By default all SSH client configuration (/etc/ssh/ssh_config) on Debian/Ubuntu systems already drwx------ 2 rrd rrd 4096 May 28 17:57 . :~/.ssh$ ll total 280 -rw-r----- 1 rrd rrd 4351 May 22 16:20 authorized_keys -rw------- 1 rrd rrd 1679 Apr 27 2012 id_rsa Sign Up Thanks for signing up!

I want passwordless logons for root access to work and client servers. Authentications That Can Continue: Publickey,gssapi-keyex,gssapi-with-mic,password SSH will ignore the file if it does not have restrictive permissions. –Navin Oct 31 '14 at 5:54 this is the best answer! –Bobo Feb 2 '15 at 14:17 Then I restarted sshd but still no success. Assuming you generated your keys using the method above, you can obtain your public key contents on your local computer by typing: cat ~/.ssh/ ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDNqqi1mHLnryb1FdbePrSZQdmXRZxGZbo0gTfglysq6KMNUNY2VhzmYN9JYW39yNtjhVxqfW6ewc+eHiL+IRRM1P5ecDAaL3V0ou6ecSurU+t9DR4114mzNJ5SqNxMgiJzbXdhR+j55GjfXdk0FyzxM3a5qpVcGZEXiAzGzhHytUV51+YGnuLGaZ37nebh3UlYC+KJev4MYIVww0tWmY+9GniRSQlgLLUQZ+FcBUjaqhwqVqsHe4F/woW1IHe7mfm63GXyBavVc+llrEzRbMO111MogZUcoWDI9w7UIm8ZOTnhJsk7jhJzG2GpSXZHmly/a/buFaaFnmfZ4MYPkgJD [email protected] Paste this value, in

Ssh No Password Prompt

Then you can go hunt the bad permissions. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count). Passwordless Ssh Not Working Linux ssh key-authentication share|improve this question edited Apr 17 '12 at 11:57 mattdm 19.6k76292 asked Apr 16 '12 at 14:38 Thom 1,3373914 4 output from the command you're giving to ssh Authorized_keys Not Working This may be commented out.

Any attacker hoping to crack the private SSH key passphrase must already have access to the system. navigate here Is there a special name for keyboards that only have a few keys? up vote 212 down vote favorite 95 I'm working from the URL I found here: My ssh client is Ubuntu 64 bit 11.10 desktop and my server is Centos 6.2 Thanks for the howto!

From: Ferdinand Gruber Reply I cannot understand the necessity of this command:    mv ~/.ssh Why do you move the public key into ~/.ssh on Failed Publickey For

The only real fix is to upgrade to RSA or better keys. –Mikko Rantalainen Feb 4 at 13:37 add a comment| up vote 7 down vote I ran into the same For this method to work, you must already have password-based SSH access to your server. on host * ~/.ssh/ -- ssh-add ~/.ssh/ –tristan Feb 3 '14 at 12:11 add a comment| up vote 9 down vote Just try these following commands ssh-keygen Press Enter key till Check This Out Unfortunately it isn't giving me root or regular user access at all; 'ssh [email protected]' is acting like it would had none of my work been done.

Instead of configuring each server host with the respective private key in ~/.ssh/identity as I should have done, I had the secondary (and in this case wrong) key configured for all We Sent A Publickey Packet, Wait For Reply Thanks! –Rob Fisher Mar 24 '14 at 17:45 1 Oh my god, thanks a lot!. alunduil you sort of answered my question, 'do both usernames have to be the same?' I tried installing the pubkey on the destination server as myself (i wanted passwordless root access

I have an ubuntu 11.04 desktop that I ssh into from a windows machine.

I have followed instruction for changing permissions: Below is the result if I do ssh -v localhost debug1: Reading configuration data /home/john/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for Looks like a permissions issue for the keys, or the .ssh directory. yes This just means that your local computer does not recognize the remote host. We Did Not Send A Packet, Disable Method ECDSA key fingerprint is fd:fd:d4:f9:77:fe:73:84:e1:55:00:ad:d6:6d:22:fe.

You can disable SELinux to troubleshoot by following the instructions here:, or just edit the /etc/selinux/config file and change it from "enforcing" to "disabled". Type "yes" and press ENTER to continue. But, of course, you then have to use the same public key for every users (not good). this contact form Check /var/log/auth.log for a message about compromised keys, like this one: Quote: May 12 21:13:38 spiff sshd[5415]: Public key from blacklisted (see ssh-vulnkey(1)) if this is the

Coworker throwing cigarettes out of a car, I criticized it and now HR is involved Which security measures make sense for a static web site? drwx------ 8 lab lab 4.0K Mar 13 08:07 .. -rw------- 1 lab lab 436 Mar 13 08:33 authorized_keys -rw------- 1 lab lab 1.7K Mar 13 07:35 id_rsa -rw-r--r-- 1 lab lab US Election results 2016: What went wrong with prediction models? share|improve this answer answered Nov 30 '13 at 22:28 diegows 62057 Here, maybe this will help because I'm new to all this and am not very good with terminal;

SSH can't read the authorized_keys file until you log in, so basically it forces you to password authenticate first. Find More Posts by alunduil 06-06-2007, 02:48 PM #3 jeenam Member Registered: Dec 2006 Distribution: Slackware 11 Posts: 144 Rep: Try copying ~/.ssh/authorized_keys2 to ~/.ssh/authorized_keys. I am wondering if your modification broke things, especially the AuthorizedKeysFile line. The following methods all yield the same end result.

Copying your Public Key Using SSH-Copy-ID The easiest way to copy your public key to an existing server is to use a utility called ssh-copy-id. logging ssh [email protected]_name will work only for default id_rsa so here is 2nd trap for you need to ssh -i path/to/key_name [email protected] (use ssh -v ... For instance, if your server is a DigitalOcean Droplet, you can log in using the web console in the control panel: Once you have access to your account on the remote Choose the default non-root user as remoteuser. (Note the colon at the end of the line!

Andrew: do not disable password authentication until you're sure public key authentication works! –Gilles Oct 20 '11 at 14:14 add a comment| up vote 3 down vote If you check the Next, the utility will scan your local account for the key that we created earlier. share|improve this answer answered Oct 19 '11 at 20:00 cmdematos 17616 7 You're explaining how to disable password authentication. generate private and public keys (client side) # ssh-keygen here pressing just ENTER you get DEFAULT 2 files "id_rsa" and "" in ~/.ssh/ but if you give a name_for_the_key the generated

modify /etc/ssh/sshd_config to have RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile %h/.ssh/authorized_keys (uncoment if case) This tells ssh to accept authorized_keys and look in user home directory for key_name sting written in .ssh/authorized_keys Before completing the steps in this section, make sure that you either have SSH key-based authentication configured for the root account on this server, or preferably, that you have SSH key-based If you supplied a passphrase for the private key when you created the key, you will be required to enter it now.