All Questions
Tagged with ssh-keys ssh-tunnel
33
questions
-2
votes
2
answers
58
views
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 ...
- 3
0
votes
0
answers
140
views
Using PasswordAuthentication yes in sshd config but password is not accepted during login
I tried to enable password authentication in CentOS 7 only for one user - auditor, by having this lines in my sshd.config (at the end of file):
PubkeyAuthentication yes
ChallengeResponseAuthentication ...
3
votes
1
answer
2k
views
How to ssh-copy-id through a jump-host? Something similar to the -J option with ssh command
I use a jump host to connect to the remote servers through SSH.
I use the following linear command for the connection.
ssh -J jumpuser@jumphost:2455 remoteuser@remotehost
It works fine.
But for new ...
- 53
2
votes
1
answer
4k
views
Reconnect automatically to a disconnected ssh session [closed]
I am new to this community ,
I am working on my iot project in which my microcontroller is working as a server, taking data and executing request. My client is end device (mobile,tablet) and I am ...
- 21
0
votes
0
answers
163
views
ssh - forward credentials without Agent Forwarding (likeProxyCommand)?
I would like to be able to use my local credentials in a remote session without Agent forwarding if possible. The reasons:
Agent forwarding has security issues (port accessible to remote root users)
...
- 123
1
vote
1
answer
5k
views
ssh-add works with id_ed25519 key but not with id_rsa key
I have two keys in my .ssh folder, one is an id_ed25519 key and the other an id_rsa key. If I run :
ssh-add ir_ed25519
I get the Identity added ... message and all is fine. If, on the other hand I ...
- 11
1
vote
1
answer
1k
views
autossh working fine from terminal, bot causing permission denied from systemctl
I'm trying to integrate autossh on a raspberry pi.
if I launch the command by itself
autossh -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -N -R 22002:localhost:22 user@myserver
everything ...
- 115
0
votes
1
answer
61
views
SSH keys for utility services on remote production server
For convienience I'd like to have a private SSH key on my remote server.
But doing that creates a vulnerability if the server were hacked. Same as if I'd hard coded a password, anyone who broke in ...
- 149
0
votes
1
answer
3k
views
How to use socket file to access server if SSH Agent forwarding is enabled
I have bastion host. I connect to the bastion host using username/password. And I have private key for destination Server. Flow:
Local Machine -> Bastion -> Destination
I know that It's ...
- 161
2
votes
2
answers
885
views
Securely sharing SSH access in a team with SSH bastion
I need to share SSH access to a number of servers with my teammates and looking for a secure way to do it. I came up with a configuration involving a SSH bastion server, but not sure how (and if) it ...
- 141
2
votes
1
answer
5k
views
SSH into remote host using jump box
I have a current setup for my servers like below:
My computer ---> Jump box -----> Target server in private network
I connect to the jump box from my computer using command
ssh -A jumpbox
...
12
votes
6
answers
4k
views
SSH access gateway for many servers
Managing multiple servers, in excess of 90 currently with 3 devops via Ansible. All is working great, however there is a giant security problem right now. Each devop is using their own local ssh key ...
- 887
0
votes
1
answer
475
views
Open an ssh tunnel between two servers from a 3rd trusted server
Assume I have 3 servers: A,B and C
C can ssh to both A and B but A and B can't connect to eachother.
Is it possible to open a tunnel between A and B using C as in "intermediary" without proxying all ...
- 115
5
votes
1
answer
8k
views
Working example of multiple permitopen options in authorized_keys
I have a working key in .ssh/authorized_keys with a single permitopen option configured. I went to add an additional permitopen and it does not allow tunnels to the new server. The documentation says:
...
- 511
1
vote
1
answer
1k
views
SSH: no port[s] to connect to
I can connect to machine m2 by logging in to m1 first:
[laptop]$ ssh [email protected]
[m1]$ ssh [email protected]
[m2]$ # i'm in!
Both machines use SSH key to log in (not passwords), and it works.
But ...
- 121
-1
votes
1
answer
2k
views
How to have multi SSH reverse connections using autossh?
I used autossh in my raspberry pi to connect to one of my VPS.
But I have 4 raspberry-pi(s). I used the same script to connect to my remote VPS, so that I can login in every raspberry pi anytime ...
- 219
1
vote
0
answers
546
views
OpenSSH Windows Error
I want to connect with putty from one machine_1 to another Windows machine machine_2. So I install a OpenSSH Server on machine_2. I generate 2 a key pair with puttygen. I paste the public key in C:\...
- 11
3
votes
1
answer
8k
views
Can't get SSH ProxyCommand to work (ssh_exchange_identification: Connection closed by remote host)
I'm unsuccessfully trying to use SSH ProxyCommand to connect to a server via a jump box. My config is below, I'm running this command:
ssh 10.0.2.54 -F ssh.config
Host x.x.x.x
User ...
- 277
1
vote
0
answers
80
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 they ...
- 425
28
votes
2
answers
137k
views
how to connect to mongodb server via ssh tunnel
It was easy for me to connect to my remote mysql server on AWS using a sequelpro, however I'm struggling with doing the same thing with mongodb.
I tried setting up an ssh tunnel via command line ...
- 1,127
-1
votes
1
answer
323
views
SSH through another machine at work to an external server [duplicate]
I'm fairly sure this will have been asked before, I have found similar questions but I do not fully understand how to apply them to my situation. So, sorry for asking again.
We have a number of ...
- 387
-2
votes
1
answer
9k
views
Impossible to connect ssh /root/.ssh/known_hosts': No such file or directory
I can't connect to my server with ssh. I have already started a session with ssh but i know if i quit this session, i won't be able to connect again to my server.
ssh [email protected]
@@@@@@@@@@@@@@@@...
- 217
2
votes
0
answers
178
views
Unable to force passphraseless ssh authentication while port forwarding
I'm completely at a loss as to what is preventing my local machine from authenticating the connection that is being forwarded from the remote server.
I've read a ton of the posts on here regarding ...
- 21
4
votes
2
answers
35k
views
Create an SSH tunnel with authentication keys - Syntax
I have to create an SSH tunnel to connect a deployment server to an VPN:
DeploymentServer --> Gateway --> PrivateServer
Each machine using a key, I tried the following command:
myMachine $ ...
- 251
0
votes
1
answer
459
views
ssh_exchange_identification: Connection closed by remote host remote desktop
I'm trying to connect to my work server using my macbook. in the morning it was working and now its not.
This is what im doing
ssh -vv [email protected] -L 1024:bolton:3389
This is ...
- 103
0
votes
2
answers
380
views
Web server intermediary for public key authentication
My home network is currently sitting behind a DD-WRT router that I can access using public key authentication. Whenever I need to access something from my home network I can simply create an SSH ...
- 333
0
votes
1
answer
1k
views
ssh over a tunnel in order to configure auto login
I m trying to copy the id_rsa.pub key to the server. The server in my case also has a virutal machine called dev which runs on the host machine. I copied the id_rsa.pub key to the host for auto log in ...
- 103
2
votes
1
answer
782
views
Why does ssh public key authentication stop working when I am tunneling ssh commands through a machine?
On Computer A, I have a public and private key for my github account. When I use this machine directly, using a connected keyboard and display, I can do all the git remote repo commands, like git pull ...
- 867
0
votes
1
answer
98
views
Gaining access to remote server over SSH from the same machine but with a different IP address
If a user can access a remote machine using SSH ok but then their static IP address changes and they find they can't access the machine, what's the problem?
I don't want to destroy the user's current ...
- 933
3
votes
2
answers
3k
views
Connect SSH Bastion Server to DB Server
I want to connect to a Linux Database Server on a private subnet through a Linux SSH Bastion Server situated on a public subnet. I also want to create a tunnel to port 3306.
When I attempt to create ...
- 506
3
votes
4
answers
2k
views
Copy directory using ssh tunnel
The following command is working as expected.
ssh [email protected] "ssh [email protected] 'cat test.txt'" > /home/shantanu/test.txt
What I need to do is to copy the entire directory instead of ...
- 3,589
1
vote
1
answer
822
views
Cygwin: Run SSH.exe (without cygwin.bat) with a keypair
I have a box I'm trying to create an SSH tunnel to using a keypair without a password. If I run cygwin.exe and generate a keypair without a password using ssh-keygen and put the public key on the ...
1
vote
2
answers
544
views
Setting up local IP based filtering with OpenSSH on Ubuntu
Greetings,
the server admin for our company suddenly left, and left the rest of us IT folk somewhat clueless about Linux and setting up servers and such. The setup is as follows:
Our local server, ...
- 499