SSH, otherwise known as "Secure Shell", is a method for securely connecting to a remote computer.

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cannot use sudo on ubuntu server passwordless authentication?

Hello I'm new at the forum and I want to introduce myself: I'm Lucas Crijns and I'm a very happy user of ubuntu server. I was reading about passwordless authentication with ssh. So I made a key and ...
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How to share WiFi/hotspot over SSH tunnel

I have created a SSH tunnel on my laptop connected to LAN. I want to share the internet via WiFi/hotspot, but over the SSH tunnel. I mean any computer using this wireless should connect to the ...
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ssh command related problem

I am facing problem with the ssh command currently. Earlier, it was working just fine, but now when I am trying to execute the same command, it says, ssh_exchange_identification: read: Connection ...
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3answers
245 views

is it possible to ssh into ubuntu server with keys and from another computer using password?

I have ubuntu server at home, and I use SSH keys to log in via terminal from my laptop. Rarely, but mostly from work, I need to access this server, but I dont want to copy keys on my work laptop - Id ...
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How to keep connection open between Ubuntu Server and Mac/Windows?

How do I keep my NAS connection active between my NAS running Ubuntu Server and my Macs/PCs? I've built a PC and installed Ubuntu Server to use as a NAS. The goal is to be able to access documents ...
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“PTY allocation request failed” error when trying to connect using SSH

I'm trying to log into Ubuntu desktop. I get the following error message: PTY allocation request failed What does it mean and how to connect to my desktop? This is the output with -v: debug1: ...
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1answer
11 views

Unable to write to /var/log/btmp

I recently had a bunch of entries in my btmp log [because of a boneheaded move on my part] I resolved the issue, but now I would like to clear that log, I copied it somewhere else for reference and ...
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4answers
147 views

need to connect as **root@my-server-ip** with SSH [duplicate]

I have a VPS with Ubuntu 14.04. I need to login as root to my server over SSH. I set a password for root: sudo passwd root then enabled it: sudo passwd -u root then rebooted my vps: sudo reboot But ...
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How to prevent Ubuntu Server sleep/hibernation

I'm running the latest Ubuntu Server (quite literally downloaded & installed yesterday) on a box under my desk. I've got trac installed and OpenSSH. Intermittently both become unavailable, as if ...
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6answers
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ssh -X “Xt error: Can't open display: :0.0”

I'm trying to open xterm on my remote server (Ubuntu Server 10.04) with ssh: ssh -X name@machine xterm but the error returned is: xterm Xt error: Can't open display: :0.0` I googled and tried ...
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Ubuntu 12.10 (32 bit ): ssh not available and not installing [duplicate]

I am installing ssh on my ubuntu 12.10 quantal. To see whether ssh is there or not on my machine. i used these commands. which ssh which sshd It didn't show any output. Then I tried to install ...
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Can't start, stop, or interface with SSH service

Having really bizarre behavior with ssh. I have the ssh-server running fine, configured ufw (firewall) fine as well. However, it seems I can't manage ssh as a service or through /etc/init.d/ssh. I ...
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2answers
40 views

juju bootstrap ssh no route

the problem is based on the context of VirtualBox, they are set on 3 virtual machines whose nodes are associated with a cluster controller, however when it completes the execution of "juju bootstrap" ...
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38 views

vi issue in SSH TTYs to Ubuntu 14.04.1 LTS

After upgrading my server to Ubuntu 14.04.1 LTS, I can no longer use the vi editor to edit anything in an SSH terminal (I access the server by launching ssh sessions from Cygwin running on Windows). ...
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2answers
23 views

Where are stored ssh client private keys?

On client, after I do ssh-add to add my private key everything works fine, ssh-add-l lists key and I can connect to hosts that have corresponding public key, but nothing changes in .ssh dir as it ...
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1answer
5k views

How do I change local display resolution via SSH?

I have a machine running Ubuntu Server 12.04 LTS and I'm having problems with the local monitor. The Dell flat panel I'm using only displays this message while the computer running: "Cannot Display ...
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1answer
73 views

How to populate configuration files over a lot of servers?

I have configuration files at my home directory (.bashrc, .gitignore, etc.). When I find something helpful for me I add this information into this files. But also I have access via ssh to different ...
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1answer
15 views

How to change the default position of ~/.ssh/authorized_keys

My VM server is installed ubuntu 12.04 and connected to a storage (not sure about the system of this storage). I have change my home directory to the storage. However this storage could be assessed by ...
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2answers
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Ubuntu ssh clients

is there a ssh client similar than filezilla but i all so need to use terminal sometimes. Support for ssh access key is all so requirement. It would be great if i just could jump up and down files in ...
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13 views

List usernames/machine name for display-less machine

I have a display-less machine (faulty VGA) I am trying to SSH to over my local network by doing something like ssh username@machinename.local as described in this solution. I know the password for ...
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Jailkit freezing

I'm trying to jail ssh users on my Ubuntu 14.04 server. So after installing Jailkit version 2.17 (with the help of this tutorial) I'm now trying to follow this AskUbuntu answer to use Jailkit. After ...
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1answer
3k views

How do I get SSH server to work with putty client?

I have an Ubuntu 12.04.01 desktop PC, 64-bit. It has openssh-server installed. When I SSH to the server from a linux box it works. But when I use PuTTY from my Windows 7 PC to connect then I just get ...
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1answer
42 views

Can't SSH in as root

I'm using the default installation of openssh-server for my Ubuntu 14.04 server. I can connect through the console as root like normal, with my username and password. When I try to SSH with the same ...
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1answer
76 views

How to run backintime as a user

To allow users to run backintime. I am usually running backintime-kde on ubuntu in the following way: sudo su ssh-agent bash backintime-kde4 --config /root/.config/backintime/config --profile-id 1 ...
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Looking for text BBS software

I would like to know if there are text-based, bulleting board system forum servers for Ubuntu. Which can be used via telnet or ssh. I was searching for this kind of software and came to this BBS ...
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9 views

SSH and Keyring utility

I have an SSH account at a certain host, and I plan to access it very frequently. Recently I added this "key" to what looks like an SSH keyring. How do I make ssh log in automatically to a certain ...
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1answer
261 views

Can't bootstrap with Juju due to “ error back from server: 401 UNAUTHORIZED”

I have this little MAAS with only one node ready to deploy (ubuntu 12.04 Precise pangolin)... I was trying to set up the Juju enviroment but i continously get this error $ juju bootstrap Bootstrap ...
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1answer
3k views

Cannot establish ssh connection to computer on local network

I've just (re)installed ubuntu 11.10 on my main pc, and the connection times out every time I try to ssh connect to my laptop (over the local network) to retrieve the files I backed up there. The ...
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27 views

/dev/mem: mmap: Operation not permitted: Using dmidecode

I am trying to get my BIOS firmware version, and memory info using dmidecode. I am connected to the server through ssh as a root user. We recently just started moving our servers from Debian 6.0, to ...
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31 views

Ubuntu subversion repository not getting checked out

I have some problems with checking out my repository. First, I ensured that everything is up to date: ubuntu@ip-172-31-10-247:~$ sudo apt-get update perl: warning: Setting locale failed. perl: ...
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1answer
34 views

How can I SSH to remote server through VPN, running on a VM?

I have an Ubuntu VM that is connected to a VPN (using OpenConnect on Ubuntu), and I want to SSH from my OS X host to the VPN through Ubuntu: (osx_host) --ssh--> (ubuntu_vm) --ssh--> ...
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How to start/configure pulseaudio remotely with ssh?

I have a remote machine to which I can ssh. On the remote machine there is a program that uses pulse audio to get input from a USB microphone attached to the remote machine. This setup works fine when ...
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2answers
404 views

Can Ping but Cannot SSH to Openstack VM Instance

Have a multi-node MAAS-JUJU-Openstack setup, i.e., nova-cloud-controller, nova-compute, and quantum/neutron gateway are on separate hosts. In this setup, MAAS and openstack share 10.0.0.0/24 as their ...
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X11Forward Ubuntuserver - cannot open Display on Android-Tablet

After some day's searching and testing what google etc. tells, i could no find any help for my problem. I have an Ubuntu 14.04 server (10.0.0.99) with Lightwight X11 Desktop Enviroment. I have ...
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3answers
663 views

Cannot SSH/SFTP to remote server without using another remote server

I can access a server A with SSH, and from there I can access server B, but I can't access B directly. Is it possible to open a Nautilus folder in server B by clicking in Places → Connect to Server?
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4k views

host key verification failed from “connect to server” utility

I am able to use SSH from terminal but I am not able to use it from "connect to Server.." utility. it is showing the error in the dialog box as below: Cannot display location ...
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SSH user problem

I am sort of a Unix newbie, trying to set SSH for my 12.04 server. I have 2 users in my system one has password the other does not, both are set as admins. My object is have the passwordless user ...
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1answer
4k views

How to increase screen resolution in Hyper-V

I am using Ubuntu 12.04 on Hyper-V in windows 8. I want to increase the resolution so that Ubuntu window can occupy my whole screen. Does anyone have any idea of how it can be done ? I found one ...
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1answer
26 views

ssh to different network inteface?

I don't know the right vocabulary to more succinctly ask this question or to search for duplicates: Someone who knows what I'm trying to ask, please edit the title of this post to be more accurate. ...
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3answers
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How do you limit root to no more than 1 login at a time?

I took a practice test for a cert and one of the questions was "Limit root to no more 2 simultaneous logins, make this configuration persistent between restarts". I didn't even really know this was ...
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3answers
42k views

In SSH, how do I mv to my local system?

Probably bad searching/not knowing the terminology, but: I've managed to ssh into my webhost's directory for me, and tar the webapp I want to back up and download. But when I try to mv to ...
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ssh-agent keeping key unlocked longer than it should

I have been having some issues regarding my ssh passphrase and ssh-agent. My intent is that I would like to be prompted for my passphrase for my ssh key everytime I close my terminal an then try to ...
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3answers
112 views

Cannot SSH from outside LAN despite port forwarding seems fine

Running Ubuntu 12.04, I've set up the OpenSSH server. I can connect from within LAN, but not from outside. I am using the same sshd_config file as on my other Ubuntu 12.04 machines (that sit in a ...
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Create FTP account with vsftpd limited to one folder only?

Have a fresh Ubuntu install 14.04 on digital ocean. Just installed vsftpd using this guide: https://help.ubuntu.com/12.04/serverguide/ftp-server.html#vsftpd-userauth-configuration The only things I ...
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8answers
9k views

How to set up a headless server?

I have a ubuntu development server at work. It is an old rack server that is located somewhere in the company's dungeon, where nobody ever goes. The only way it can work is as a so-called headless ...
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How I got my error: malformed file

This question on askubuntu is about the error: malformed file Not only here on askubuntu, but everywhere else I've been reading about it, this is considered certain to be a GRUB issue. I thought it ...
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Fresh install of ubuntu SSH only working from localhost

I installed the latest version of ubuntu on ESXi as a VM. I then installed openSSH and it worked once from a remote machine and got hung up when trying to execute a command on mysql. Ever since I ...
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1answer
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SSH failing to connect

I'm trying to set up an SSH connection to my DDWRT router. I followed instructions on generating a key pair in the Ubuntu documentation SSH/OpenSSH/Keys but I'm not able to connect. The debug ...
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SSH connection failing since I changed server port number

Yesterday I changed the default ports on the server from 22 to 1993 then restarted but now I can't connect at all. I used ssh -i keyname.pem ubuntu@remotehost to connect then sudo vi ...
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Stuck trying to Securely access my home network from my Android phone over 3g/4g

First, I am able to use simple port forwarding on my router to access each IP cam individually. This is an unsecured method and is exactly the solution I am trying to get away from. I am a Linux ...