Questions tagged [openssh]

OpenSSH (OpenBSD Secure Shell) is a set of computer programs providing encrypted communication sessions over a computer network using the SSH protocol.

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git@gitlab.com: Permission denied (publickey). fatal: Could not read from remote repository [closed]

The authenticity of host 'gitlab.com (172.65.251.78)' can't be established. ECDSA key fingerprint is SHA256:HbW3g8zUjNSksFbqTiUWPWg2Bq1x8xdGUrliXFzSnUw. Are you sure you want to continue connecting (...
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Building OpenSSH 8.2p1 on Ubuntu 18.04.4 LTS, what flags should I configure it with?

I need a newer version of OpenSSH on my home machine for remote work. What flags should I pass to ./configure to maintain the same level of configuration as my current OpenSSH (7.6p1), the one ...
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Isn't a status of active (exited) an oxymoron?

How is one supposed to interpret a status of "active (exited)" on a service such as SSH or SSHD? (This is the results of the command: sudo systemctl status sshd How can it be active if it exited? ...
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OPEN SSH not listening on Port 22

I installed Ubuntu 20.4 (and included Open SSH) as virtual machine on Virtual Box on a Windows 10 laptop. I installed Samba to allow for machine name connection. Below shows the listeners on Port 22,...
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How to set up SSH key based authentication for vendors

I have installed a Vendor SSH PUB key in my linux server( redhat based) under a non admin user say X. And when I tried to login from Vendor machine, using FileZilla( login using the Private key of ...
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Some unnamed processes eat 100% CPU

My vps is running Ubuntu 16.04. Recently, I have found a lot of failed ssh connections in /var/log/auth.log. I have enabled fail2ban and disabled password authentication. Now, there are some unnamed ...
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Failed to start OpenBSD Secure Shell server

I wanted to use ssh in order to connect with localhost but it was impossible. When I wrote ssh marian@127.0.0.1 -p 22 it display ssh: connect to host 127.0.0.1 port 22: Connection refused I ...
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Why in SSH appears the -T parameter in the Ubuntu documentation but not in the terminal/console?

Having the following OS: Linux Ubuntu (18.04 LTS) when I execute the ssh command I got the following: > ssh usage: ssh [some characters shown] [-B bind_interface] [-b bind_address] [-...
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How to ssh into local Ubuntu device?

I am trying to access my odroid-xu4 device running on Ubuntu 18.04 Bionic Beaver, I tried to ssh the localhost and I got the following message odroid@odroid:~/Desktop$ ssh localhost odroid@...
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Ubuntu - Moduli file upgrade story

SSH uses /etc/ssh/moduli file for DH exchange key alogithm. Only root has write permissions to modify the /etc/ssh/moduli file. Assume that we modify the /etc/ssh/moduli file for some reason (Ex - ...
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103 views

RASPBERRY PI 4 :PermitRootLogin yes but can't login with root

I just installed ubuntu for raspberry 19.10 on my raspberry pi 4 i use ubuntu every days. I set PermitRootLogin to yes but can't log directly with root. Any ideas ? Thanks
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SSH - Permission denied (publickey) with Password Authentication

I'm not able to log into my remote machine and get the Permission denied (publickey). even through I manually specify the options to use password authentication ssh -o PubkeyAuthentication=no -o ...
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Ubuntu Server 18.04 and OpenSSH 8.2 - when?

I need support for Yubikey's for a project. Sysops need to log on to an Ubuntu Server from remote positions using them. I see that openssh 8.2 has native support for it. Will openssh 8.2 be available ...
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Cant connect to SSH server (Ubuntu) from home wifi

My SSH server set up at my workspace usually from a mobile SSH application with cellural data i can reach ssh anywhere,but when i'm home and i want to do my thing it just wont connecting. The server ...
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can't log in with my password during ssh connection

my /etc/ssh/ssh_config is as follows # This is the ssh client system-wide configuration file. See # ssh_config(5) for more information. This file provides defaults for # users, and the values can ...
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what is the command to convert a private key from DES-EDE3-CBC to AES?

How to convert an openSSH key to AES ? I have a git connection reset by peer when trying ssh -vvv my_gitlab_server It works for my colleague having a AES-128-CBC type private key when mine is DES-...
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Unable to remotely connect to a machine using SSH

I am trying to remotely access a machine at my university via ssh using my laptop running ubuntu 19.10 (however I have also tried with another laptop with ubuntu 18.04) and am unable to connect via ...
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Unable to install openssh-server on ubuntu 16.04 in Docker

I have a Docker container with a brand new install of Ubuntu 16.04, I'm unable to install openssh-server successfully. I'm able to install openssh-client successfully but when attempting apt-get ...
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1answer
197 views

SSH / SFTP Permission denied (publickey)

I've added the following to my sshd_config Match Group sftponly ChrootDirectory /srv/sftpfolder ForceCommand internal-sftp #AllowTcpForwarding no PermitTunnel no X11Forwarding no I created "user" by ...
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Having issues downloading Openssh server, broken slapd package

I'm trying to configure my ssh and I having some major issues with my ssh server. I am using Windows 10. To give some more context I have Used - sudo apt-get update sudo apt-get install openssh-...
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191 views

Unable to connect to a ssh server

Sir can't connect to assh server through my ssh user id or password. All the login procedure is done but at the end, the error message say's "Could not chdir to home directory /home/me-vpnjantit.com:...
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1answer
463 views

UFW OpenSSH application port change?

When using UFW I see there are "applications" like OpenSSH or Apache, to name a couple. If I were to change my SSH default port to something other than the 22, would the OpenSSH application rule map ...
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1k views

Is possible to upgrade openssh-server OpenSSH_7.6p1, to OpenSSH_8.0p1?

Tried to install OpenSSH_8.0p1 but installed OpenSSh Client only. sudo apt install openssl-server Reading package lists... Done Building dependency tree Reading state information... Done E: Unable ...
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mac to ubuntu terminal ssh connection?

if i want to connect my mac to ubuntu terminal which ip address should I use? my mac and ubuntu server is located in different area(different ip address) ifconfig only shows 192.168.x.x I guess this ...
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SSH connection get stucked at login after a few days of server uptime

when i try to connect to server via XShell it hangs with following message: Connecting to 192.168.1.10:22... Connection established. Other ssh clients just hang forever. A reboot solves the ...
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connect mac to ubuntu by ssh

for ssh connection ssh -i id_rsa id@ip_address in ip_address if I connect to my ubuntu from outside(not local ip) which ip_address should I put ?? i put my router ip address and sssh connection ...
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190 views

sshd ignoring PermitRootLogin directive

After setting PermitRootLogin no and restarting the sshd service, I'm still presented with a password prompt when logging in as root. This is Ubuntu MATE 16.04 running OpenSSH 7.2p2-4 (up-to-date as ...
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1answer
59 views

openssl and openssh-server on the same system

I have installed both openssl and openssh on my ubuntu bionic machine. OpenSSH by design seems to use a (slightly) older version of the openssl library whereas OpenSSL (the package) uses a different ...
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How to pin openssh from eoan in bonic

I want to pin only "openssh-server" package from eoan to my current bionic distro which has an old openssh version.
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188 views

opening jupyter notebook on remote computer using mobaxterm

I am trying to open jupyter notebook on my laptop (windows 10) by accessing my server (ubuntu 18.04) through mobaxterm (on windows). when I type jupyter notebook into the mobaxterm terminal jupyter ...
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What is opensshremotesexplorer?

I installed the Remote Development extension for VSCode but when I click on the configure button of Remote-SSH (which is part of Remote Development) I receive this error: command '...
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GSSAPI Authentication Error: “An invalid name was supplied” (FQDN, FREEIPA)

When trying to connect to a FreeIPA client via SSH using GSSAPI it produces the error: An invalid name was supplied. The name/key used is: "Host/mail@" which shows something has gone wrong server-side,...
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I uninstalled openssh-client and all my snap application have been erased

I uninstalled openssh-client and i didn't see that another apps were uninstalled too. Now all my snap app like Reemina, atom, etc (all snap app that i've installed with ubuntu software gui) were ...
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1answer
784 views

write: Connection reset by peer

When I open my PC (Ubuntu 19.04) and try to log in for the first time in my ssh server (Raspbian buster) I get write: connection reset by peer: trp@trp-pc:~$ ssh -vvv pi@192.168.2.251 OpenSSH_7.9p1 ...
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2answers
569 views

Configure SSH server to NOT ask key OR password over localhost connection

I am trying to satisfy a weird case, so bear with me please. I want to use [don't gasp] graphical Windows tools (like WinSCP, PuTTY, etc) with signed OpenSSH keys. These tools don't support signed ...
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How to configure openSSH server using nmcli on ubuntu?

Today in order to update attribute on openSSH server I need to open and update sshd_config file using an editor (vi). Do I have nmcli commands to update the attributes on that file? for example, I ...
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1answer
225 views

Is the ssh service renamed in in 19.04?

SSH seems to work fine, but running sudo systemctl restart ssh gives the error Failed to restart ssh.service: Unit ssh.service not found. (and the same for sshd) Did they rename it or something?
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SSH Server cannot be found - Even though installed

I have a machine running Ubuntu 18.04 LTS where I cannot seem to get SSH Server working. I installed SSHServer using: sudo apt install openssh-server but I am getting the following when I try to ...
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1answer
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Is there any problem to always enable ssh server on ubuntu?

For establishing a remote connection one must have to enable our OpenSSH server but once we disconnect our connection,is it necessary to stop the SSH service?
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SSH'ing into ubuntu desktop that uses a VPN

I am trying to SSH into a ubuntu desktop that is constantly running a vpn service - think nordvpn. Because the vpn 'changes' my IP address, this seems difficult to me. I am a complete beginner in this ...
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184 views

Password always required even if in sshd_config PasswordAuthentication no

I have 5 VPS Ubuntu 18.04 LTS. The SSH configuration is the same for everyone. No root access User2 with "sudo" permissions No password request Access via SSH Key RSA From my PC (Xubuntu ...
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SSH server only allows one client session connect via it's public IP address

Alright, here's a weird one that's stumped me for the past couple hours: My server is running Ubuntu 18.04, ufw is disabled, and I just reinstalled openssh-server. Maybe it's worth noting that it's ...
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212 views

OpenSSH sshd Privilege Separation Directory

OpenSSH 7.6p1: Why did Ubuntu change the default location of the sshd privilege separation directory from /var/empty (i.e. look at the man pages for sshd on the openssh.com web-site) to /run/sshd? ...
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1answer
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OpenSSH Ubuntu Team

I am dealing with a multi-process sshd problem regarding the privilege separation directory. I have been in contact with the OpenSSH team and I have reviewed their source code, specifically: OpenSSH 7....
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Assigning PrivSep directory in sshd

I am having an issue while running multiple instances of sshd. I can start and stop the services manually without issue. The problem is during boot. Since the init.d is executing multiple threads ...
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944 views

SSH version shows older one after upgrading

I've upgraded OpenSSH version in my Ubuntu 18.04 server to 7.9 to fix User enumeration vulnerability. When I enter the following command, the output is: ssh -V OpenSSH_7.9p1, OpenSSL 1.0.2n 7 Dec ...
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Cannot complete setup of openssh-server [duplicate]

When I install openssh-server with apt-get install on my ubuntu 18.04.2 LTS server an error occures when kpgk processes the package. The server is a cloud machine with 1 VCPU, 2 GB RAM, 20 GB Disk (4 ...
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1answer
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command to use on windows openssh to download file from Ubuntu server

I am using OPENSSH Client ("terminal") on windows, and I would like to download a file from an Ubuntu server TO my windows file system; is there a command to use?
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416 views

SFTP Default Folder & Limiting Access With chroot

I want to default a given user to a specific folder when they SFTP to my Ubuntu 18.04 machine. I also wanted to lock down SFTP a bit. This Digital Ocean post gave me what I needed, and helped me get a ...
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3answers
802 views

Why doesn't the authorized_keys file stop SSH from promting me with “The authenticity of the host <host> can't be established”?

I have created 2 key pairs using ssh-keygen, one on the server and one on the client. I then added the server's public key to the client's $HOME/.ssh/authorized_keys file, and vice-versa. When I try ...

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