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

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Server Upgrade an 'end-of-life' Server from ISO over SSH

I have read that it is possible to upgrade ubuntu from an ISO image, but would the same be possible from a remote location over SSH? After mounting the ISO, what command would I use to upgrade? I ask ...
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52 views

ssh, problem with headless device

I have Ubuntu 14.04 installed on a headless device. Since the last update and shutdown it is not possible to connect via ssh anymore. nmap shows the machine is up and in the network, all ports are ...
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1k views

Black screen when accessing Ubuntu remote host via VNC and vino-server

I have a headless server and I am trying to setup a VNC connection in order to access it with a GUI. Now I have only root access via ssh. I have followed most of the instructions given here Enable ...
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357 views

cannot use visual mode GUI through ssh -XY <ip_address>

I am using ubuntu 12.04, and I am trying to ssh to log into a remote server which is also running ubuntu 12.04. I am using "ssh -X ". I can log into the remote server smoothly, but cannot use the ...
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167 views

Moved a VBox guest to a physical host; network is up, but OpenSSH is not. Why?

I've come a cross an issue I really don't understand. I wanted to install Ubuntu Server on a headless box I have. The desktop sits right next to it, and adding and removing disks are very easy, so I ...
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58 views

Is it possible to login into lightdm interactive screen remotely?

I have this big Ubuntu desktop that dubs also as a home cinema PC. When I feel lazy, I'd love to be able to run the PC remotely and watch movies from my bed. I can turn it on via WoL. I can launch ...
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108 views

Reaching a login limit over SSH - How can I open more than 11 sessions?

I have a SSH connection to my Ubuntu VPS. I use it to create a proxy tunnel and it works well. I use Nethogs and "w" command to monitor the traffic. Nothing bad happens until I reach @pts/11. When ...
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60 views

Connecting to Ubuntu host not possible

I have an Ubuntu-Host which is connected via wlan (and for testing to wired net) to a local net. This Ubuntu-Host is not reachable via network by any other clients on the same network. But: If I do a ...
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85 views

'ssh -x -a -oClearAllForwardings=yes' running on my machine

I have a process with the following name: ssh -x -a -oClearAllForwardings=yes -2 user@host -s sftp running on my machine, not for the first time, and I don't remember running such (I have obscured ...
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852 views

pam_systemd delays SSH login - required?

On our Saucy servers (13.10) we are seeing long delays when logging into the systems via SSH. I figured out it is related to the line session optional pam_systemd.so in ...
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807 views

User has no permissions in sftp

I installed LAMP in my Digital Ocean droplet. I have successfully logged in to SFTP. However, when I try to do anything in my /var/www/html/ folder it says permission denied. It may be worth ...
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65 views

Non privileged user launch SSH?

My server got hacked, and as a result the server guys decided that my apache user would be one called 'nonpriv' which has no privileges at all. Before that happened, I had a user that run apache ...
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555 views

Cannot install Openssh-server or client

When I go to install, I get this error: sudo apt-get install openssh-server Reading package lists... Done Building dependency tree Reading state information... Done Some packages could ...
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128 views

ssh dynamic socks server running in the system is not accessible from outside

I have an infrastructure hotspot setup on my Ubuntu machine using ap-hotspot. I connect to this hotspot from my Android phone and am able to access the internet through this. Now, I have a ssh ...
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43 views

Why would SSH ask for password every other day?

So I've been using ssh for quite a while with a server for the company I work with. Since about a month ago ssh keeps asking me for my passphrase for the rsa key, mind you, it does it every other day. ...
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114 views

Desktop's “Connect to Server” function repeatedly asks for SSH password after connecting

I would like to use the "Connect to Server" function (available from the Ubuntu desktop menu) to open a Nautilus window showing the file system of another machine through SSH, since I find it easier ...
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295 views

Backup files and folders on Qnap Ts-421

I have a ubuntu 12.04 desk that I use as a file server, I have a Qnap turbo NAS Ts-421 that I'd like to use as a backup destination. I've enabled smb, nfs, ftp, and ssh and the firmware is the latest ...
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86 views

artillary is not with SSH in ubuntu

I have installed Artillery in Ubuntu 12.04 LTS. I have started artillary and started that service with service artillery start while I am doing netstat -nltp | grep LISTEN why SSH port number ...
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117 views

How to allow multiple users to use the X display?

I got a physical machine running Ubuntu 12.10 server edition along with a X server + Unity. I would like to remotely connect to this machine through SSH to run a graphical application over the remote ...
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47 views

keep track of all logins and logouts

The system is using wtmp to keep track of all logins and logouts to the system. Since the new year, it doesn't keep track for more than a day. For example when I look at all logins I see the ...
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662 views

Not able to connect to Vmware ubuntu using Putty in Windows 7

I have installed Vmware Ubuntu in my Windows 7 PC, with network settings as Bridge connection. I got IP address in Ubuntu as "192.168.1.3" and I am able to ping that IP from my Windows host, but when ...
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117 views

how to quit sshuttle and get system networking back to normal in VBox

I love sshuttle. My new fav toy. But...when i run from the command line and I use ctl-c to quit....my networking is screwed and I have to restart the VM. Using 12.04 Here is how i start from the ...
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168 views

How to ssh tunnel to ec2 for running a local python script

I can create a tunnel for FF using the below on Ubuntu. Machine is 12.04 in a VBox on a mac host. -i ~/.ec2/aws_development_oregon.pem -C2qTnN -D 8080 ubuntu@test.com But..what I need is for my ...
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93 views

Allow users to access specified IPs only

I have a computer that offers both a VPN and a SSH server running three (separated) VPN networks. All users log into the server via ssh. However, I want that only certain users can communicate to ...
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57 views

SSH keys don't work on KDE

I've got my ssh keys working on Gnome and XFCE (using gnome-keyring). However when I switched to KDE, then it doesn't work at all. What's more, even when I start ssh-agent, and add keys, and try to ...
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100 views

Chrooting to a mounted USB Stick using SFTP

I would like to use SFTP over OpenSSH as a small FTP server. However I would like to use a mounted hard drive or USB stick as the chrooted directory for the user. As far as I see, chrooting is ...
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367 views

How To Configure Multiple Virtual Machines As An Internal Network Via SSH

First of all, I am using Windows 7 as a host. Then I install Ubuntu 12.04 Guest under VirtualBox. Then I get an access to the other four virtual machines (also Ubuntu 12.04 Guest) via ssh by running ...
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168 views

pam radius module access-reject

I am trying to set up an Ubuntu server that my users will connect to. I already have a Radius server running on a Windows box, and I would like for connections to this Ubuntu box to authenticate to ...
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90 views

“Service ssh restart” causes server to encounter Kernel panic

I just got my HDD's in my servers raid controller replaced with Intel 520 SSD's. Now after reinstalling the server (with ubuntu server 12.04 and with a newer kernel 3.8.0-29-generic) and installing ...
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153 views

Ubuntu server 13.04 ssh keygen issue

I want to be able to use github and their service hooks to deploy sites and apps to the server. To do this I need to create an ssh key and put the public key into github. I go through the ...
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153 views

How to run openmpi on virtualbox with 3 PCs through SSH?

I have 3 PCs with Vista, running Ubuntu through Virtualbox on them. I have installed openmpi and ssh on them, they are connected via ethernet. The IP addresses are all 10.0.2.15. And I can ping with ...
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801 views

Suddenly cannot access SSH on LAN

I had ssh running on my LAN server. Suddenly (not sure what I did), I cannot access the LAN server via ssh. When I try, it just hangs for a while with no response and finally comes out with a timed ...
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475 views

mount a remote (ssh) usb disk?

My home server has an external USB drive connected. I prefer to keep it unmounted so I don't have to log in if I want to unplug it (for backup rotation). But I'd also like to be able to browse it in ...
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1k views

Reverse SSH Tunnel Issue

I'm working on setting up an unattended Ubuntu PC with Ubuntu Server 12.04 Minimal, and since this PC will be placed in a remote location with no keyboard or screen (unattended), I need to have a ...
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269 views

ssh client times out to some servers, works on others

I have a strange problem and I'm not sure where to begin. My ssh client works on some servers but times out on others. Obviously, I checked that the servers are accessible via ssh from other ...
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599 views

Suddenly cannot SSH into server from LAN, but can from outside LAN?

This is the weirdest problem I've ever had with trying to ssh into a server. Suddenly I can't ssh from my workstation to the server on the LAN. I can do so just fine from home, however. ...
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21 views

Repartitioning live system. Anything i missed?

I tried to repartition the server about a month ago, and ended up being unable to connect after reboot (SSH denied after messing with fstab) . I tried to read up on the subject afterwards, and I might ...
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26 views

I'm having some issues working with parallel ssh

I'm trying to figure out how to issue the same command to an entire cluster. I'm using parallel ssh, but I can't seem to get it to work right. When I try a command I get: [1] 22:58:24 [FAILURE] ...
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19 views

Configure separate SSH access on multiple interfaces for SPA

I'm trying out SPA with a client and a server machine that has 2 ethernet interfaces eth0 and eth1. I want to enable separate SSH access on both interfaces that are configured with their own static ...
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11 views

boot delays - old ssh connect to host messages connection timed out

I tried searching for a solution elsewhere, but nothing looks like this problem. After restarting our server, we get boot messages such as the following: ssh: connect to host dev.contractor.com port ...
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7 views

ssh not authenticating to kerberos

I am using my single PC as a ssh-client,ssh-server,kdc,admin-server. I am not using any of the virtual machines for this kerberos lab. I am connected to wife get the ip of 192.168.1.224 but i am using ...
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20 views

Beaglebone: usb0 interface not showing up

I recently installed Ubuntu 14 on my BeagleBone from armhf.com. However, I'm unable to ssh into my Beaglebone over USB. Running ifconfig, I discovered that there is the usb0 interface is not showing ...
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20 views

Can I add another user to my main user group without side effects?

I'm trying to set up SSH access on my computer. I want only SFTP to be enabled, so rssh seems like an option. I have the following plan: (My default user is called sebastian) chmod -R go-w ...
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6 views

synaptic tries to uninstall so many packages when trying to install openssh-server

I've been tyring to get openssh-server through sudo apt-get install openssh-server, but when I ran it I got the following: The following packages have unmet dependencies: openssh-server : Depends: ...
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27 views

“-bash: cmake: command not found” in MATLAB with SSH

I am using MATLAB. In its command window I am using SSH to access a remote machine and run commands. When I attempt to do so I get error messages such as -bash: cmake: command not found Now I ...
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32 views

Server at OVH (Ubuntu 14:010) work on SSH and HTTP ONLY from my cellphone(4g)

Hope you'Re all going good. So yeah this is alittle problem i have with the VPS i took at OVH. They say everything is fine in their end. But i managed to install nginx on the server and even then ...
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cannot ssh into an ubuntu server which seems to be due to a problem on server side

i'm trying to login in to an ubuntu server from windows msysgit providing the identity explicitly. output of ssh -i .ssh/id_rsa user@site is $ ssh -i .ssh\id_rsa user@user.koding.io -vvv > ...
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12 views

Running clusterSSH via X forwarding

I need to connect to my workplace via ssh -X and then need to use clusterSSH to run some commands on the multiple machines at my workplace. First of all, I am not sure if this is possible at all. ...
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15 views

which password I should need to log in hadoop?

I follow this instruction http://chaalpritam.blogspot.com/2015/05/hadoop-270-single-node-cluster-setup-on.html but when I run this(ssh-keygen -t dsa -P ' ' -f ~/.ssh/id_dsa) command it gives some ...
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21 views

Iptable rules filtering from ip address to interface

By default I have an implicit deny on my ubuntu firewall but I want to make the ip address 10.1.10.201 have a few privileges. I want it to have ssh and telnet capabilities to contact the external ...