Questions tagged [public-key]
The public-key tag has no usage guidance.
282
questions
3
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why does GPG ignore the trust level I had set for recepient key?
I encountered the following puzzling behavior with GPG: after I set trust for a recipient's key, gpg still complains it doesn't know if it should use the encryption subkey and prompts for input.
Here ...
- 31
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0
answers
131
views
Can not SSH to GUI Ubuntu on Login Screen
I have a laptop with Ubuntu installed, and I've set up SSH using a key, and everything was working fine (I could SSH into the laptop from another computer).
Then, I rebooted the laptop, and on the ...
1
vote
0
answers
431
views
AuthorizedKeysCommand setup prompts for password
The issue: Even though I've set up AuthorizedKeysCommand and password authentication is stopped when I attempt to log in from my Mac, I am still being asked to enter the password:
OS: Rocky Linux 9.2
...
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-2
votes
2
answers
104
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the theory of SSH public and Private key and its application in realworld machines [closed]
there.
In this question, I have a very specific one about public and private keys. So Public keys should be put on the opposite side. For example, if we have a server, the public key of the server ...
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0
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256
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Linux server ssh connection wont authenticate my account using ssh key gen and prompts me for password
I am facing an issue in Ubuntu 22.04.2. where I am unable to SSH into a remote server using a copied public key. I have generated an SSH key pair on my local machine using a bash terminal, and I have ...
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0
votes
1
answer
846
views
Permission denied (publickey) error when managing GCP machine via Ansible (running on GCP VM) despite successful SSH connection
I deployed two machines to GCP via Terraform. Let's call them control-host and target-host. I want to manage the target-host via Ansible installed on the control-host.
Unfortunately, I keep getting ...
google-cloud-platform
2
votes
1
answer
10k
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Ansible playbook can not connect to remote user through ssh => unreachable & permission denied
I'm building a complete solution to setup and harden our vps (ubuntu 22.04) with bash script and Ansible playbooks.
What I want to do is the following:
Create a custom group "sudogroup" ...
1
vote
1
answer
6k
views
Ssh login error - Permission denied (publickey,password)
i just had configured a debian server and installed aapanel on it. I also changed the default port to 50001 instead of 22.
now i tried to login with ssh -p 50001 [email protected] and got this error
...
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2
votes
3
answers
6k
views
SSH authenticate with publickey,password or publickey,none
On my SFTP-Server I want to allow only login via public key AND password
OR (if and ONLY IF user has no password) by only public key
I set the following in the the sshd_config:
AuthenticationMethods ...
- 31
11
votes
2
answers
4k
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ssh how to allow a very limited user with no home to login with pubkey
I have a very restricted user in my ssh server created with --no-create-home and --shell /bin/false.
I know I can define authorized_keys file in sshd_configs for the user's public key. But how can I ...
- 491
1
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0
answers
822
views
Connection closed by remote host when copying client public key to sftp server
I want to copy the client public keys for a container to a remote sftp server and after that attempt do some uploads to the server via bash script(the bash script will be invoked when the container ...
- 143
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0
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428
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Trying to get 100% in ssllabs.com key exchange with nginx (Oct/2022)
My site got A+ on all score fields, however, it seems ssllabs.com changed some measures, and the key exchange score is not 100% any more:
screenshot
My previous Nginx setting is like this:
...
- 11
0
votes
2
answers
2k
views
ssh-keygen unable to verify key "unknown option -- Y"
Context:
I am trying to verify my public key on a Gitea instance. Gitea provides a token for me to generate a signature; The instructions say:
echo -n 'TOKEN_PROVIDED' | ssh-keygen -Y sign -n gitea -f ...
0
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0
answers
1k
views
Different SSH versions and behaviors, public key failing
I got 2 Ubuntu machines, a new A and old B. The ssh configuration files are identical, but versions are different, as expected:
→ ssh -v localhost
A:
OpenSSH_8.9p1 Ubuntu-3, OpenSSL 3.0.2 15 Mar 2022
...
- 103
0
votes
1
answer
83
views
AWS CLI Usage Issue
In our scenario, We previously had some AWS keys. The IAM interface show/showed no usage for it but the employee has been able to upload resources. Could anyone advise how to check if the interface is ...
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1
answer
47
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Management of password disable server
This question is just for curiosity. I am studying a bit of server administration and have seen many people saying that having passwords is a bad idea and they should be disabled. But my question is: ...
2
votes
2
answers
3k
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Openstack ubuntuVM SSH public key Permission denied on first boot
I am deploying Openstack(I tried victoria and ussuri) with kolla-ansible on 3 CentOS 8 Nodes (1=Control+Compute,2 and 3=Compute). Deployments works fine without any problems but when I create a new VM ...
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0
votes
2
answers
513
views
ssh -A still not allowing git pull
We have a setup where our git server needs the publickeys to authenticate in order to push or pull. I am trying to do so on one of our servers and can't figure out why it isn't working. I have ...
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1
vote
2
answers
5k
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No associated key pair, add key pair to EC2 with no key pair
How do you add an existing key to a live EC2 instance that has no key pair?
I have tried using Session Manager to vi /.ssh/authorized_keys and add in the public key of the pair, but I get this error:
&...
- 519
1
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0
answers
3k
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Public key for /etc/ssh/whatever does not match private key - but it does
When I start my ssh service (on a Devuan Chimaera Linux box), I get the warnings:
Public key for /etc/ssh/ssh_host_rsa_key does not match private key
Public key for /etc/ssh/ssh_host_ecdsa_key does ...
- 1,722
0
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1
answer
458
views
Does using an SSH jump host count as a login?
I have asked for a service account from the AD guys that will let me use a specific server as an SSH jumphost (using ProxyJump), and of course I've set up an SSH private key for the purpose. The ...
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2
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1
answer
1k
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AWS - ssh to instance in private subnet
I have 2 instances in AWS. One of them in a public subnet (bastion), the second one in a private subnet.
Both of them were launched with the same key pair (.pem file).
This is how I connect to the ...
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1
vote
1
answer
1k
views
SSH - Permission denied (publickey)
It's another SSH issue. It worked before updating to Fedora 33, but now it doesn't which makes me believe it's a client side issue. Anyone seeing something in the logs which could give a clue? ...
0
votes
0
answers
91
views
Can I use SCP while having multiple AuthenticationMethods, like publickey,password?
My task is to create a bash script that will copy files from server2 in my server1. The issue is that I can't connect from one server to another. I have whitelisted server1 IP on my server2 22 port.
...
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0
votes
2
answers
92
views
Public/private key
I just watch this video https://youtu.be/ZhMw53Ud2tY and the question I have is if I have to generate a public/private key pair for each server I’m looking to login to or if I just generate one pair ...
- 111
0
votes
1
answer
8k
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For SSH access only, do I leave `#PubkeyAuthentication yes` commented out in sshd_config, or uncomment it?
Just setting up a new Debian 10 server having uploaded my public SSH keys, not restarted sshd yet.
I can now log in without password, so now doing all the usual recommended edits in /etc/ssh/...
- 201
1
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0
answers
239
views
OpenSSH Windows server 2012 : SCP process randomally working : with passowrd authentication
I have created a openSSH SCP bat script and scheduled task to run as SYSTEM. I use publickkey authentication method. For that converted a private key of winscp to openSSH key using putty key gen and ...
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0
answers
2k
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GPG import skips public key in file (no user ID)
On computer-a a key is generated, linking it to email [email protected], using command
gpg --gen-key
Then it is exported using command
gpg --export -a --output public.asc [email protected]
The file is ...
- 1
0
votes
1
answer
839
views
Strongswan roadwarrior scenario with pubkey authentication issues
Ubuntu 20.04
Strongswan 5.9.1 (built from source)
swanctl.conf
Android Strongswan app
I am using a self signed ca and certificates.
roadwarr-ikev2-pubkey {
version = 2
#proposals = aes192gcm16-...
- 253
0
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2
answers
4k
views
Cannot access my server "Permission denied (publickey)."
Hi i have created a key ring on my server B
I copied the public key of my server B to the authorized_keys file of my server A
My servers are on Ubuntu 20.04 LTS
When I try to transfer a directory from ...
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4
votes
5
answers
9k
views
Public Key Authentication not work on Windows 10 Professional
I have been trying to configure OpenSSH for my Windows 10 Professional Edition media server. I can get normal password login working without issue but I am trying to set up public key authentication.
...
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1
vote
2
answers
94
views
I have an issue with configuring openvpn server and running it
Server Log
Options error: Unrecognized option or missing or extra parameter(s) in server.ovpn:4: cert (2.4.9) Use --help for more information.
server configuration
server 192.168.1.0 255.255.255.0
...
3
votes
3
answers
5k
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authorized_keys has my key, but it's still refused
I'm connecting from machine M1 to machine M2 using ssh (to the same user on the other machine). I should also mention the user shares the same key on both machines. With password authentication, ...
- 1,722
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2
answers
2k
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Local GitLab Not Accepting SSH Key
I checked out this post, but it seems like it was written for OSX and/or Windows, and I'm not really sure how to apply it to my situation:
GitLab Not Working With SSH-Keys
I set up my GitLab instance ...
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2
votes
1
answer
4k
views
HTTP authentication with public/private key pair
I'm looking for a way to authenticate clients/users at a web server with public/private key pairs and already read this question:
Public key authentication or similar over HTTP/HTTPS? The answers are ...
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votes
1
answer
1k
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the same ssh rsa key does not work in Ubuntu(WSL) while from RHEL7 it works
I'm trying connect from Ubuntu(WLS) to RHEL7 server using ssh RSA key.
And it does not work, while the same key when used from another RHEL7 host works.
I checked all file permissions
There is no &...
- 287
0
votes
0
answers
638
views
ssh public key auth fails for private git server
I want to git push from a local debian 10 user to my server (debian 10) where I have set up a git server under the username git using ssh public key auth. The problem is: it still asks for the ...
- 101
0
votes
1
answer
58
views
openSSH don't disclose reason for permission denial
i have set up public key authentication on my VPS, and disabled password logins.
If someone tried to connect to my VPS, it right now says "Permission denied (publickey,gssapi-keyex,gssapi-with-mic)".
...
- 135
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votes
2
answers
979
views
Permission denied (publickey) - Troubleshooting sshd pulling public keys from LDAP Server
1.
Problem Summary:
Hi, recently, in our infrastructure production environment, new users are unable to ssh into a debian jump server.
The jumpserver' SSH daemon retrieves the SSH public keys from ...
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3
votes
1
answer
28k
views
Correct configuration of the SSHD config file?
I'm using ssh on my linux box, I want to secure it to be as watertight as possible, only allowing ssh via ed25519 elliptic curve crypto sigs.
I thought I had it setup correctly, disabling password, ...
- 113
0
votes
1
answer
520
views
Deploy Public Key in Windows Server
I have a Windows server in AWS and I want to deploy a public key to connect sftp authentication by key file.
I use freeftpd to reach my sftp connection but the program do not support key ...
0
votes
1
answer
36
views
Can MS AD Certificate Services maintain both public and private keys in active directory?
Is there enough control over AD user properties to have custom fields (one with only SELF having read permissions) and with Certificate Services to automatically maintain/auto-renew certificates and ...
- 152
0
votes
1
answer
194
views
How to adequately add identical public-private ssh key to a new client machine?
I have generated private and public key pair files (id_rsa, id_rsa.pub) using ssh-keygen command in a machine A, which is a client. I have tested my connection to server in machine A and it is working ...
-2
votes
1
answer
311
views
Installing EC2 .pem publickey to Debian ssh
I recently generated a publickey (.pem) from an EC2 instance, used ssh-add to add the key to my local machine. The IdentifyFile in the Host entry at /etc/ssh/ssh_config points to the .pem file at ~/....
2
votes
2
answers
318
views
how to create status of REMOTE HOST IDENTIFICATION HAS CHANGED when performing ssh to remote machine for testing
We want to cause the status from a remote Linux machine to return
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r",
"@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @\r",
"@@@...
- 501
1
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1
answer
192
views
RSA key pair is not allowing me to authenticate to my backup server [closed]
I have a server that authenticates SSH through RSA key pairs. Yesterday my rsync backup worked successfully I know this because of log files:
/var/log/backups_log$ ls -l
total 815536
-rw-r--r-- 1 ...
- 111
2
votes
1
answer
3k
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Display public keys + fingerprints of Dropbear SSH server
While I normally use OpenSSH I have Dropbear installed on a Debian system to provide a small SSH server for unlocking disk encryption during initramfs boot phase.
Dropbear and OpenSSH have different ...
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268
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SSH connection between two hosts with differents user
i have two hosts
H1 with ip=10.10.10.15 , OS=Windows Server 2016 and username=administrator
H2 with ip=10.10.10.16 , OS=Centos7 and username=user
I attempt to create a ssh connection between H1 ...
- 41
0
votes
1
answer
112
views
How to set another public key for EC2
I would like to change my public key for all instances EC2 in AWS.
I still have the previous key. So far, I created a new public key, but I don't know how to attach the newest to all EC2 instances.
...
- 139
0
votes
1
answer
1k
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proftpd server allow second or multiple public key for single user
If I'm using openssh server, allowing multiple public keys are simple. It is enough put it into file ~/.ssh/authorized_keys with content
ssh-rsa ****there_is_public_ssh_key**** ...
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