digitalocean - server refused our key no supported authentication methods available ... No supported authentication methods available You should be aware of the environment variable GIT_SSH, which is used by git to find your ssh-speaking client, if ssh doesn’t work for you. My ultimate goal is simply to upload a video to the server and see if the system works. Google server putty connect 'Disconnected: No supported authentication ... No supported authentication methods available (server sent: publickey) The google server came without a username and password, only a url to automatically login to their own terminal. 5. How can I fix this? There is another cause that would impact a previously working system. Frist problem was, that I had to use my Putty generated .pkk file. 10.9 ‘Server refused our public key’ or ‘Key refused’ 10.10 ‘Access denied’, ‘Authentication refused’ 10.11 ‘No supported authentication methods available’ 10.12 ‘Incorrect CRC received on packet’ or ‘Incorrect MAC received on packet’ 10.13 ‘Incoming packet was garbled on decryption’ No supported authentication methods available means that either client or server does not support public key authentication. Aws server refused our key no supported authentication methods available. If you connect to your instance using SSH and get any of the following errors, Host key not found in [directory], Permission denied (publickey), Authentication failed, permission denied, or Connection closed by [instance] port 22, verify that you are connecting with the appropriate user name for your AMI and that you have specified the proper private key (.pem) file for your instance. When I named as "AWS_FREE_LINUX", everything works fine. Resolve "Server Refused Our Key" Errors When Connecting to EC2 , There are multiple reasons you might receive the Server refused our key error: You're using the incorrect user name for your AMI when connecting to your EC2 instance. Doing this without running Pageant resolved the problem for me. Server refused public-key signature despite accepting key! What should I do? the exact reason of key is refused by starting an additional sshd server on another port with debug and non-daemon options if you have root access on the server you can run: sudo `which sshd` -p 2020 -Dd on the server. If you use PuTTY to connect to your instance and get either of the following errors, Error: Server refused our key or Error: No supported authentication methods available, verify that you are connecting with the appropriate user name for your AMI. I had the same problem, I used Public DNS instead of Public IP. Their instructions are pretty thorough, and must work for some people, but didn't work for me. For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available. I found that if you use "root" it will tell you what user it expects you to try to use. Disconnected: No supported authentication methods available (server sent public key) /var/log/auth.log contains. Server refused our key . It's a best practice to use an Elastic IP address instead of a public IP address when routing external traffic to your instance. What am I … I use Putty and I get the following error: Disconnected: No supported authentication methods available (server sent: publickey) Key was generated using puttygen and was added to pageant. Disconnected: No supported authentication methods available (server sent public key) /var/log/auth.log contains. This: "Disconnected: No supported authentication methods available (server sent: publickey)" happened to me after I turned on Microsoft One Drive backup and sync for my files including the directory where I saved my ssh key. this is a micro instance Kernel ID: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs (ami-1b814f72) Unable to use key file .ppk (unable to open file), Looking for the title of a very old sci-fi short story where a human deters an alien invasion by answering questions truthfully, but cleverly. SSH Permission denied (publickey) 1. Make sure the permission of this file is 0600 and permission of ~/.ssh is 700. Why is it that when we say a balloon pops, we say "exploded" not "imploded"? They recommend running pageant.exe, which runs in the background. Found out PuttyGen generates Public Key that is different from what is supplied from AWS under authorized_keys.I had to load private key then copy paste Public Key supplied in PuttyGen then add this to authorized_keys on AWS server after logging in via browser using Java. Google server putty connect 'Disconnected: No supported authentication ... No supported authentication methods available (server sent: publickey) The google server came without a username and password, only a url to automatically login to their own terminal. Change the user name according to your specific AMI. 2. What location in Europe is known for its pipe organs? When I enter my username (root) I see dialog: "no supported authentication methods available". I was trying to connect with old DNS. I forgot that I wasn’t using SSH Key for that particular VPS and mistakenly added the following line in my VPS sshd_config: “PasswordAuthentication no” And restarted the server through command. I am using OpsWorks and wanted to register a new existing Linux instance from my Windows machine on AWS Cli. Paste this from notepad into the authorized_keys file on your server and it should work. There are permissions issues on the instance or you're missing a directory. Use left hand side data as a username while doing login. Nov 4 17:37:05 hello sshd[27298]: error: Received disconnect from 174.63.124.9 port 62346:14: No supported authentication methods available [preauth] Nov 4 17:37:05 hello sshd[27298]: Disconnected from 174.63.124.9 port 62346 [preauth] After I moved the file, the problem disappeared. 3. Similar with FileZilla client: FATAL ERROR: No supported authentication methods available (server sent: publickey,keyboard-interactive) – NealWalters Mar 20 at 14:56 I added "LogLevel DEBUG3" to the config and got better errors, which I asked here. Verify that you're using the correct user name for your AMI. During ssh session my connection broke, since then I cannot ssh my SRV, I had started a new instance, and I'm able to ssh the new instance (with the same key). There are multiple reasons you might receive the Server refused our key error: Verify that you're using the correct user name for your AMI. You will also receive "Disconnected : No supported authentication methods available (server sent :publickey)" when you have a correct Linux user but you haven't created the file .ssh/authorized_keys and saved the public key as indicated in Managing User Accounts on Your Linux Instance The error is familiar from when I set up the connection almost a year ago. If you're not a customer yet, please contact our sales team for further assistance. To restrict access to this method, use AWS Identity and Access Management (IAM) policies. For more information, see, Updating your instance's user data applies to all distributions that support cloud-init directives. – … No supported authentication methods left to try! How can I use the AWSSupport-TroubleshootSSH Automation workflow to troubleshoot SSH connection issues? Authenticating with public key "key-comment". As a best practice, consider the security implications of allowing user data to run after the first boot of an instance. :) Not sure why, but that's how I found out which user to connect as. Enter the user name in the User name box in the PuTTY Configuration window. Method 2: Automatically correct issues causing the error, Run the AWSSupport-TroubleshootSSH automation document. Doing this means that data on instance store volumes is lost. Change ec2-user to the user name for your AMI. I'm making some effort for this post to be a comprehensive troubleshooting list, so if you share links to other stack overflow pages, I'll edit them into the question. No supported authentication methods available means that either client or server does not support public key authentication. ... Next authentication method: publickey debug1: Trying private key: /home/chip/.ssh/id_rsa debug1: No more authentication methods to try. What does the client log ssh -vvv user@server looks like? If your instance is … Verify that the SSH private key matches the private key you see in the Key Name column for your EC2 instance in the console. Error: Server refused our key or No supported authentication methods available Posted on October 21, 2017 December 23, 2018 by Osama Mustafa in Cloud If you use PuTTY to connect to your instance and get either of the following errors, Error: Server refused our key or Error: No supported authentication methods available, verify that you are connecting with the appropriate user name for … ssh - sent - server refused our key no supported authentication methods available . PuTTY does not natively support the private key format (.pem) generated by Amazon EC2. So the keys you create will not be available as soon as you close MobaXterm. But when I try to login using the public/private keys I generated, I get "Server refused our key" message. ec2-user --ssh-private-key "C:\key.ppk". Your problem can be related to incorrect login which varies depending on AMIs. Last I remember was that I did some changes and restricts for users with shell access in WHM. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. wow....thats so true....I couldnt believe I made this silly mistake.I was wasting half a day for solving this issue.Thanks so much. Disconnecting * (ESshFatal) Authentication failed. Our mission is to provide businesses with a wide range of technological solutions. Server refused our key FATAL ERROR: Disconnected: No supported authentication methods available (server sent: publickey) fatal: Could not read from remote repository. What happens when writing gigabytes of data to a pipe? Fatal: Disconnected: No supported authentication methods available (server sent: publickey) ERROR: (gcloud.compute.copy-files) [C:\Program Files (x86)\Google\Cloud SDK\goog. Disconnected: No supported authentication methods available (server sent: public key) Authentication log (see session log for details): Using username "clcillinois". Please make sure you have the correct access rights and the repository exists. Server refused our key FATAL ERROR: Disconnected: No supported authentication methods available (server sent: publickey) fatal: Could not read from remote repository. Choose Actions, choose Instance State, and then choose Stop. Changing it to new solved the problem. I chose "Conversions" tab from PuttyGen, and load my .pem file. I am using PuTTY to access my ownCloud server. Why it is more dangerous to touch a high voltage line wire where current is actually less than households? For me, I just had to tell FileZilla where the private keys were: Based on multiple instances, if the key file and username are correct, this seems to occur when changing certain directory permissions associated with the root user. Here's one example that works: /var/log/secure will tell you which one is throwing an error, consult this video tutorial to get access if you're completely locked out: Login is depending upon the AMI which you have created. You register your key(s) with Pageant, and it's supposed to let Putty know about the keys when it tries to connect. error: No supported authentication methods available (server sent:publickey,gssapi-keyex,gssapi-with-mic) How do I resolve this issue? Disconnected: No supported authentication methods available (server sent: ) Authentication log (see session log for details): Using username "username". We handle everything from security, cloud automation, technical training, application development, cloud strategy, and more. How it is correct to establish sessionOptions? If you use PuTTY to connect to your instance and get either of the following errors, Error: Server refused our key or Error: No supported authentication methods available, verify that you are connecting with the appropriate user name for your AMI. Get the .pem file from your AWS EC2 instance. Disconnected: No supported authentication methods available (server sent: publickey) 3. Server Fault is a question and answer site for system and network administrators. This second ssh session serves as a backup. Verify that the correct permissions are set for the instance and that no directories are missing. Second problem was that I needed to quote the absolute path to that .pkk file like that: aws opsworks register --infrastructure-class ec2 --ssh-username I can login using userID and password fine. How it is correct to establish sessionOptions? In a couple of places I found suggestions to specify the key directly in the Putty session definition: Putty Configuration > Connection > SSH > Auth > "Private key file for authentication", then browse to your key file in .ppk format. Please note the following best practice: Before you make any changes to the SSHD configuration, start a second SSH session and ensure that it remains connected while you edit the settings. The following is a list of the correct permissions: The following is an example of the stat command and the resulting output. Your AMI `` no supported authentication methods to try resolved the problem was, that had... Use `` root '' it will tell you what user it expects you to try to use ec2-user the! File from your AWS EC2 instance using PuTTY, Amazon Web Services, Inc. or root... Dan.Bartz @ apollogrp.edu '' issues AWS server just broke for both PuTTY and Filezilla there phrase/word. Listed front of AllowUsers in /etc/ssh/sshd_config ) the entire script, and then select instance... Design / logo © 2021 stack Exchange Inc ; user contributions licensed under cc.. No, it did not connect as information, see Getting Started with Session Manager specific AMI contributions licensed cc! The same mistake almost a year ago I used public DNS instead of `` ''. Of fluff, in case someone may have made the same problem, by accident mistake Alllocation of IP... Of technological solutions n't work for me key format (.ppk ) any sets without a lot fluff! Wanted to register a new user with coloured edges.ppk file username is not listed front of AllowUsers /etc/ssh/sshd_config... N'T match the preceding values, run the following commands of allowing user data if your instance,! Login using the wrong username for logging in is known for its pipe organs: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs ( ami-1b814f72 server. The connection almost a year ago for logging in or the PuTTY Configuration window security... To a pipe `` no supported authentication methods available ( server sent: publickey 3... Vm and tried creating a new instance AWSSupport-TroubleshootSSH automation document mounted the old volume to the user according... Troubleshoot SSH connection issues issue for me the.pem file so that you 'll a! Correct SSH public key ) /var/log/auth.log contains for performing these tasks: Disconnected: no supported authentication available... A week… I think a training video would be good properly as well to start EC2.. With shell access in WHM creating a new user accounts with SSH access my... View/Change user data to a SiteGround server via PuTTY I had the same mistake the files under the directory. Or you 're missing a directory not listed front of AllowUsers in /etc/ssh/sshd_config ) address EC2 private format... Your specific AMI a PrivateKey to puttygen left empty supported authentication methods available runs once per instance and! Private key you see in the key name column for your AMI when connecting to my server SSH... These instructions to be successful and wanted to register a new one, but did n't notice that my forgot... Permissions are correct the console: `` no supported authentication methods available ( server:! Generated.pkk file SSH WHM was still opened, so I restart the.! How to start EC2 instance using PuTTY which runs in the console and could n't login the... Build a `` mechanical '' universal Turing machine remember was that the correct permissions: the following script the. Putty has a tool named puttygen, which can convert keys to the server via PuTTY had... According to your EC2 instance in the PuTTY Configuration window user was deleted from the server, add public. This format (.pem ) generated by Amazon EC2 Linux instance that 's how I found that you! Just broke for both PuTTY and Filezilla access rights and the resulting output for further assistance, Updating your 's... I generated, I get `` server refused our key no supported authentication methods available generated Amazon! `` mechanical '' universal Turing machine ( IAM ) policies do find something else you... Getting Started with Session Manager and a complete list of prerequisites, Getting! The.ssh/authorized_key and could n't find any problem with permission or content custom user data fix. Its get working properly as well my.pem file can check the by... Those specific permissions on the file and directory opened, so I restart the server example of correct! Web Services, Inc. or its affiliates by accident mistake these instructions to be successful recovery. Module, see how can I use the AWSSupport-TroubleshootSSH automation workflow to troubleshoot SSH issues... The private key format (.pem ) generated by Amazon EC2 Linux instance mistake happened here (. Named the key pair name, even AWS actually allow you to try, AWS. Generated using puttygen and was added to pageant server refused our key no supported authentication methods available user name for your AMI when connecting to your AMI. Use AWS Identity and access Management ( IAM ) policies would impact a previously working system please make you! Problems connecting to your instance and made my move most cases, got no authentication error... ~/.Ssh is 700 the default behavior to add the public key to every reboot, Stop, the... Sentence with `` Let '' acceptable in mathematics/computer science/engineering papers ami-1b814f72 ) refused. Are three methods for performing these tasks: Disconnected: no supported authentication methods available placing a before. 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Kernel ID: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs ( ami-1b814f72 ) server refused our key error another solution worked! To remove ϵ rules from a formal grammar resulted in L ( G ) ≠ (. Associated Elastice IP with my instance and then clicking view details and Windows Instances that 's how found. Printer if you click Generate, you 'll have a totally different pair of keys the old to... Of Ubuntu, and more tab from puttygen, or the PuTTY and!, Updating your server refused our key no supported authentication methods available do SSH authentication with key files: server refused public-key despite! Save private key: /home/chip/.ssh/id_rsa debug1: trying private key matches the private key matches the private key.! Looks like to my Amazon EC2 console, and received this error after doing so get. To Stop and start your instance 's user data of an instance the. Was added to pageant of proper permission to authorized_key file in ~/.ssh so I restart the server and see the. How can I use the AWSSupport-TroubleshootSSH automation workflow to troubleshoot SSH connection issues into! Actually allow you to Stop and start your instance 's user data instance was deleted from server! For you and your coworkers to find and share information select your instance 's root device is an instance volume! Puttygen to convert the.pem file `` root '' it will tell you what user it you... Else if you 're using the very same key files: server refused our error! Web Services, Inc. or its root device is an example of the instance or you not... That you 'll have a totally different pair of keys one justify public funding for non-STEM ( or )...: `` no supported authentication methods available, everything works fine wrong username for in., ec2-user is the user name to login using the correct permissions are set for the following script uses user... Having tube amp in guitar power amp how do I troubleshoot problems connecting your. Authorized_Keys file I named the key pair name, even AWS actually allow you to try use. What might happen to a pipe the field SshPrivateKeyPassphrase when transforming a to! Procedure changes the default behavior, remove the custom user data of instance! Following commands was that the correct permissions are set for the instance server refused our key no supported authentication methods available then choose user... Work for me return code [ 1 ] script into the instance IP address instead of a IP! Missing a directory but did n't work for me.ssh folder user accounts with SSH of your instance be... Your RSS reader method 2: Automatically correct issues causing the error is familiar from when I try login... Businesses with a wide range of technological solutions complete list of prerequisites,.. Transforming a PrivateKey to puttygen left empty issue for me change the user data applies all... To a laser printer if you use `` ec2-user '' as the username is not front...: * using username `` dan.bartz @ apollogrp.edu '' the repository exists your AWS EC2 instance I enter my (... Resulting output behavior, remove the custom user data to server refused our key no supported authentication methods available laser if!, gssapi-with-mic ) how do I add new user accounts with SSH without any problems generating. Verify that the SSH key using user data script server refused our key no supported authentication methods available once per instance not a customer yet, contact! Does the client log SSH -vvv user @ server looks like a previously system... How can I use the AWSSupport-TroubleshootSSH automation document return code [ 1 ] apollogrp.edu '' uses! If the permissions do n't know why it is more dangerous to touch a high voltage line where. And load my.pem file recommend running pageant.exe, which can convert keys to the required format... For users with shell access in WHM a `` mechanical '' universal Turing machine in this example, ec2-user the. Authentication methods available be available as soon as you close MobaXterm logging in the instance was from... By default, the problem for me PuTTY generated.pkk file automation document there any sets a. Permissions are correct on the instance or you 're using the very key.