The tag has no wiki summary.

learn more… | top users | synonyms

5
votes
1answer
24 views

Are there any security benefits to deploying custom SSH DH groups to client-only systems?

One suggested mitigative strategy against Logjam-related attacks on SSH is to generate custom SSH Diffie-Hellman groups using something like (the below being for OpenSSH) ssh-keygen -G ...
1
vote
0answers
20 views

Hosting SSH Keys [on hold]

Most of us keep ssh-keys for server logins, which is perfect but once you have two different set of ssh-keys (office, personal) that means its hard for you to manage 'em once you have new servers in ...
1
vote
2answers
28 views

To generate key for AWS server using ssh-keygen from .pem for PuTTY

AWS gave me a private key in the format of .pem. I am trying to use it with PuTTY but failed and I read I need to generate a key with PuTTYgen but PuTTYgen is only for Windows. So I am trying to use ...
4
votes
1answer
59 views

How to disable ALL authentication in sshd? [closed]

Here's a question that I have found absolutely no answers for: how can you configure sshd so that anybody can freely SSH into the box without password or key authentication? The objective is to allow ...
-3
votes
1answer
33 views

Connecting AWS from Windows. Error: Using username “ec2-user”. Server refused our key

I am connecting AWS EC2 using Putty from Windows 8, I followed all steps mentioned on this page of conversion of .pem to .ppk and have loaded .ppk in Putty. Putty Configurations: Host Address: ...
1
vote
0answers
10 views

Is it possible to authenticate to Sonatype Nexus via ssh keys

Is it possible to authenticate to Sonatype Nexus via ssh keys or any other method that does not require user password in maven settings.xml? I know there are user generated tokens in Sonatype Nexus ...
3
votes
1answer
121 views

AuthorizedKeysFile line commented out but still seems to work

I'm setting up a server on Linode and following their Securing Your Server guide. They recommend setting up ssh key pair authentication. I have already uploaded my public key to server and the key ...
6
votes
2answers
464 views

Using ssh key pair authentication and disabling ssh password authentication - what happens if private key lost?

I'm configuring my first server on Linode and going through their set up tutorials. In their Securing Your Server tutorial, it recommends using ssh key pair authentication and disabling password ...
-1
votes
0answers
16 views

connect to openshift amazon ec2 server via bitvise

is it possible to connect to my open-shift application server via bitvise . i tried connecting but always got same error as in the image . if it is possible can someone please tell me the correct way ...
1
vote
0answers
18 views

Ubuntu 14.04 - rsync corrupting SSH configs/keys?

I have two Ubuntu 14.04 servers S1 (user root) and S2 (user dataman). S1 is responsible for handling file uploads and transferring backups to S2. On S1 I am using PubKey authentication to S2 for ...
0
votes
0answers
19 views

why does having ~/.ssh/id_rsa.pub cause GUI dialog asking for SSH password even though SSH_ASKPASS is empty?

How the problem started For some reason I did not have my id_rsa.pub file in ~/.ssh. So I copied it off one of my servers to ~/.ssh/ on my machine... so that I have it, so I can copy it to servers ...
4
votes
3answers
622 views

ssh-copy-id - permission denied (publickey) [closed]

I want to set up ssh tunnel to the mysql server which is in computer which has virtual machine. Also the tunnel has to work if the machine is restarted. So lets say A is computer with linux software. ...
-1
votes
2answers
103 views

SSH key rejected by google compute engine instance

I generated my ssh key through the google sdk shell, then i went to put my key in FileZilla and connect to my google compute engine instance and it wont accept my key. How do i fix this?
0
votes
0answers
41 views

How to configure SSH host keys in cloudformation template?

I'm trying to configure an EC2 with known SSH host keys on boot using cloud-init in a cloudformation template. But now I can't SSH into the server. It's tricky to debug :-) Here's the userdata part ...
0
votes
1answer
78 views

How to run php exec for nested scripting on remote machines?

I originally asked this question stackEx, and realized it was a much better fit here. I'm trying to automate the deployment of services on a cluster of hosts from a web-server. I've evoked the php ...
0
votes
1answer
49 views

SSH timeout issues not consistent

I am not sure if anyone else have had issues with SSH timeout I setup a FRESH install of CentOS 6.5 minimal without touching the SSH congfig at all and when i log into it via SSH using putty..it ...
0
votes
1answer
10 views

Server connects without passphrase via putty but asks for passphrase from the native command line?

I am trying to connect to an EC2 instance and it has a .ppk security key. I am not an expert on server frankly and I am still try to figure things out by trail and error. I usually connect to my ...
1
vote
2answers
44 views

sshd: logging client's public key

I need to run an SSH server and log the IP & public key of any client that attempts to connect (without actually granting access). The use case is this: I deploy this web app to a remote host ...
10
votes
2answers
607 views

SSH: Safe for client to host private RSA key?

Is it safe to generate a public/private key pair on the server, add the public key to the authorized_keys list, and then copy the private key to each client, as described here ...
2
votes
1answer
45 views

SSH key authentication not working

I've a server running Ubuntu 10.04 (as a VM) to which I can't connect using ssh key authentication without being asked for the password. I've read a lot before posting but I really don't know what I'm ...
2
votes
1answer
64 views

ssh command line specify server host key fingerprint

Using ssh command line (OpenSSH), can I specify the server's host key fingerprint? This is possible with winscp.com using (e.g.) -hostkey="ssh-rsa 2048 AA:BB:CC...etc I have read the man page a ...
1
vote
1answer
25 views

Determine which key is successfully used for authentication with AuthorizedKeyCommands

As of OpenSSH 6.2, the option to use an external program for key pair based authentication is available with AuthorizedKeysCommand. According to the sshd_config man page, this program should return ...
2
votes
1answer
248 views

SSH with DSA 2048 bits key

I need to set up secure connection through ssh keys, prerequisites are : DSA type number of bits : 2048 Passphrase : yes On my Linux I can't create this kind of key, the man says : DSA keys ...
0
votes
2answers
35 views

Adding an SSH public key to a new account without enabling password authentication

On a SSH server, I have the following (truncated) configuration: PubkeyAuthentication yes PasswordAuthentication yes On my client, I have a key pair, and have added my public key on the server ...
1
vote
1answer
110 views

How to change SSH key on Google Cloud?

I need to replace the existing SSH key with a new one, but I don't see such options in Cloud admin panel. What is the right way to do this?
0
votes
1answer
191 views

GitLab push not possible and always results in asking for git-user password [closed]

I have a problem with GitLab. Everything is fine, but I can't push. It is asking me all the time the password of the user git. Is it a problem, that I first installed the Omnibus package and then ...
1
vote
0answers
53 views

Is rbash secure if user login and ssh passwords are disabled?

I've got a server that I want to use as an SSH gateway for remote and local port forwarding. I don't want arbitrary commands to be able to be executed on it, only my scripts. I keep reading about how ...
-1
votes
1answer
353 views

SSH failing to connect, No supported key exchange algorithms

There are numerous questions with the same title however none of the solutions apply to my issue. I get the following lines of error in my sshd log: Jan 6 21:57:55 <computer name> sshd[30103]: ...
1
vote
1answer
391 views

CoreOS / Docker “$ fleetctl satus my.service” - ssh: handshake failed

Digging in to CoreOS clusters with Docker and have come upon a SSH issue while trying to learn how to work with fleet. Deploying, running services etc goes well. SSH auth problem occure when executing ...
1
vote
1answer
87 views

gitolite git user asking for password with valid keys

My gitolite installation start to ask for password suddendly, I checked the /var/log/secure file and found this. sshd[9071]: User git not allowed because account is locked sshd[9072]: ...
0
votes
1answer
28 views

Is my private key safe if I use authenticaiton agent forwarding with the ssh -A option?

I love the option to connect to servers via SSH with the -A option, so I can use my private keys on the server. This lets me update git/svn repositories and connect to other servers without the need ...
1
vote
1answer
307 views

generating ssh-keys for a non root user with salt

I need to generate ssh-keys(public/private pair) for a user say helen. This user is already in all my salt minions. How do I generate ssh keys for this user from my salt master? For root user I ...
0
votes
1answer
48 views

ssh key authentication - port other than 22 involved

I've noted this entry in auth.log Accepted publickey for myuser from ip_address port 51150 ssh2 That entry corresponds with my ssh-key-based login event. SSH is listening to default port - 22. ...
-2
votes
3answers
42 views

Is it possible to use key based auth AND interactive auth with SSH? [closed]

I'd like to use key based auth so I can SSH to linux systems without needing to specify a password and just worry about keeping the key file safe, but there's a chance that someone else (who that ...
0
votes
0answers
30 views

Enable root password on remote server

I'm playing around with ssh-with-rsa-key authorization instead of password authorization and because I'm not really clever I've locked password authorization for root(passwd -l root) on remote server. ...
1
vote
1answer
50 views

Instance created from shared snapshot gives Server refused our key error

I have created an instance from a shared snapshot from other aws account,following steps were done by me, 1.Share snapshot from other account. 2.copy it to my account. 3.create a volume from it ...
2
votes
0answers
336 views

AWS connection error: Permission denied (publickey)

Sorry if this sounds redundant to you but trust me its not. I have tried almost majority of the links related to this problem but nothing is working for me so far. I even tried this article two. Below ...
0
votes
0answers
104 views

PAM: authentication error

I am trying to connect from Windows 7 Jenkins slave to a MacMini machine in one of the final build process of Jenkins build. This has been working for some time now till last nigh. There has been no ...
1
vote
2answers
623 views

Unable to ssh to GCE Permission denied (publickey)

I created a VM via bitnami in Google Compute Engine. Previously I was able to ssh via the bitnami web interface. I tried to ssh via terminal on my Mac but kept getting the Permission denied ...
1
vote
1answer
60 views

What is the best way to distribute a rsa ssh key over a large amount of servers?

I know one way, running on a list of server like so: for server in $(cat server.list); do ssh-copy-id user@host done But I was wondering if there's a better way to do it? something automatic which ...
5
votes
1answer
321 views

One Unix account for several users on GitHub, how does it work?

When we create a repository on GitHub, we can always access it with the address "git@github.com:user/repo" but how does it work behind the scene? ...I mean, there is only one Unix account: "git" ...
1
vote
2answers
526 views

Add remote host to known_hosts file without prompt [duplicate]

I wrote some scripts and wish to add a remote host to my known_hosts file without any interaction. I can run a command like ssh -o "StrictHostKeyChecking no" root@10.x.x.x which will add the remote ...
2
votes
1answer
849 views

Auto accept rsa key fingerprint from command line

I've tried yes | ssh root@10.x.x.x to try to accept the RSA key fingerprint, but am still prompted if I'm sure I want to connect. Is there a way to make this automatic?
-1
votes
1answer
49 views

How to auto login a .ssh server from a .ssh2 server?

I have a server A which ssh-keygen produce a .ssh2 direcotry and id_dsa_2048_a* files and a server B which ssh-keygen produce a .ssh directory and id_rsa* files and a server C like B How can auto ...
1
vote
1answer
329 views

Fabric used to work with ssh-keys, but not anymore

I have my ssh key set up correctly and I can ssh into the remote machine without password. However, my fabric deploy script which could authenticate automatically until a couple of hours ago, started ...
1
vote
0answers
35 views

Centralize way to prevent interactive logins

I have an Ubuntu server that is used for two primary purposes for my students: To hold on to files that students need to temporarily upload for my assessment (ie: I give them an input image, and ...
3
votes
0answers
1k views

SSH_ORIGINAL_COMMAND variable not getting set

I am working with two servers, both of which run FreeBSD 8.4-RELEASE-p1 and OpenSSH_6.1p1. Both servers' ssh_config files, located in /etc/ssh, are identical. Both servers are configured to allow ...
5
votes
1answer
428 views

Rsync + public key authentication security

I have read several articles how to automatically backup files with Rsync and public key authentication. All of them are very similar. I just finished setting up everything and everything works fine ...
1
vote
2answers
82 views

Ability to use SSH Key / PEM for web authentication in lieu of password protection?

I've been trying to figure out a way to lock down our dev site even more, and the idea came up that instead of using IP centric + Password protection, using something more akin to a PEM key, like I ...
-4
votes
1answer
34 views

Disable ssh auth by keys

Usually all disable ssh login with password only. I'm asking about reverse situation. Does sshd_config allow to disable authentication with keys only?