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

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Want to know how how secure my system is with current settings

My system is at kernel 3.15.2 Mainline. I have Enabled the firewall with all ports closed. I have very strong passwords set for BIOS, Drive Encryption, and login SSH is Disabled. I have installed ...
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501 views

Cannot access 14.04 using ssh/scp?

When I tried to access my ubuntu using ssh or scp from other OS, I cannot access, same as I put correctly password root. See the file below If I use ssh appear the same problem... How can I fix ...
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141 views

Ubuntu 12.04 - SSH hang at reading configuration

Hi fellow Ubuntu users! I currently have a problem when connecting to remote computers at work. Here is the log : OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading ...
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791 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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39 views

Can SSH into target Ubuntu machine fine on target's boot, but later the connection attempt times out on the client

I have two computers in the house, one is Ubuntu running OpenSSH-server, the other is either a VM Ubuntu with an openssh client or putty on windows. When I boot up the server machine I can SSH into ...
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77 views

Accessing scanners attached to thin clients

I have been using LTSP in one distribution or another for the last 10 years. We currently have Ubuntu 10.04 LTS LTSP deployed at several sites and have begun the process of migrating them to Ubuntu ...
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1answer
946 views

Ubuntu 14.04 keeps asking for passphrase when ssh

I have ubuntu 14.04 workstation installed in my LAB. Now I have issue with rsa key passphrase. Following are what I have in my LAB SVN server(12.04): I have svn server installed, anyone who want ...
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28 views

Can Nautilus open two SSH connections simultaneously?

I am using Nautilus to connect to two remote servers (A and B) via SSH protocol. I can connect to a single server by opening the File > Connect to Server dialog. I enter my details and everything ...
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1answer
292 views

how to give user server name instead of ip when connecting through SSH?

I have a virtualbox on which I have installed ubuntu 12.04. My host computer is Mac OS (mavericks). I did a SSH key copy to my remote (which is ubuntu server and I call it myubuntu). when I did ssh ...
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252 views

Reboot / shutdown log

On a 12.04 server, I have random reboot issues with my dedicated server, that I can only resolve through ssh. Sometimes (usually after applying important security updates), I issue a reboot through ...
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1answer
530 views

how to run local shell script over ssh with su option

I have a script called test_ms.sh which I want to run over ssh along with the su - username option. I am user X on server A and server B and I have su access to user Y on server B. I do not have ...
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58 views

Ubuntu doesn't recognize samp server files

Well, I took a free vps at vps.me....I logged into the ssh, downloaded SA-MP 0.3z server files, extracted went to samp03 and chmoded all to 777...I have changed rcon pw server name...When I type ...
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25 views

SSH for ubuntu touch [duplicate]

For some reason, while I am trying to connect to SSH on my Nexus 7 2013 I keep getting this error message: Permission denied(publickey) Can someone explain how to properly setup SSH for Ubuntu ...
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2answers
3k views

“This account is currently not available” error when trying to ssh

An error occurs when I try to make SSH connection: $ ssh -p 22 www-data@x.x.x.x This account is currently not available
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3answers
1k 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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3answers
338 views

Change specific line in a file while transfering using SSH

I'm deploying my project to production server using scp command. As part of the deployment process I upload to server the .htaccess file. Locally, the environment is set to DEVELOPMENT: #Set ...
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1answer
245 views

rsnapshot bug with 14.04 - rsync not found error [closed]

Using rsnapshot with the +rsync_long_args=--rsync-path="sudo rsync" command fails with a rsync not found error. If I do a rsync only without using rsnapshot the command works find so it's not related ...
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3answers
46 views

Is there a way to send my IP packets to say node “r” inside network A from a node “y” in network B via SSH?

I have two networks A and B consisting of linux nodes and I want to communicate between the two via SSH: Both networks are separated by the internet. Network A is behind a firewall, and allows only ...
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2answers
3k views

openssh server is refusing connections by blocking or resetting

On a quite fresh install of Ubuntu 14.04 (machine1), I have openssh-server with a completely default config. When connecting from machine2 on the LAN, with an empty ~/.ssh, I get the following debug ...
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1answer
2k views

changed permitrootlogin to no, but I can still login as root

I just created a new server (VM) and I setup SSH, I can login fine. I created another user account, added it to the admin group and sudo works fine. Now I want tried to disable the root login, so I ...
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244 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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1answer
125 views

ec2 ubuntu access requesting password after ssh update

I was trying to set up an sftp account and one of the forums suggessted that we comment out PAM access. I now think that is how the user ubuntu has access and so I can no longer access my ec2 instance ...
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2answers
4k views

What causes SSH problems after rebooting a 14.04 server?

Why does rebooting a server running Ubuntu 14.04 give me 'Connection refused' errors? I see ssh: connect to host <IP-address-here> port 22: Connection refused but only for 14.04 and only after ...
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1answer
113 views

Setup SSH keys to login as super user

I have a random question. I am new to SysAdmin side, so not sure if I am doing it right way or not. We have a sudo user setup called wladmin an host1. I login to host 1 as myself, then do following ...
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55 views

problem with login node on maas via ssh

I've a problem with the login on nodes via ssh. After I've installed MaaS, added the ssh key on MaaS,added 2 nodes, made them in ready and then in allocated status, activated the power on using ...
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1answer
132 views

Server asking for password even after adding ssh keys

This was working fine but not sure suddenly stopped working. I have added my id_rsa.pub key of localhost to authorized_keys of .ssh folder on server. When I try to login to server (running ubuntu ...
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1answer
318 views

Imported OpenSSH keys are saved in Gnome2 keyring, not OpenSSH

I have run into a frustrating issue, that I am sure will be a snap to solve. When importing an openssh key via the "Passwords & Keys" (seahorse) program, it simply places it within the "Gnome2 ...
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17 views

Deamon openvpn configuration file with .conf?

In the video connected to a Linux to another Linux via SSH, the second openvpn daemon already startado and configured with user/password requested at the entrance. http://youtu.be/tSNCE6j2zxM How do ...
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1answer
26 views

ssh to a pc under mobile network

My friend is using internet using mobile internet(Airtel). I want to ssh to his pc. I know his ip address and the name servers of his network. How can I ssh to his pc?
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1answer
228 views

MySQL SSH Connection Setup

I want to connect to a MySQL db (running Ubuntu 14.04) with my Mac (running Mavericks). I will be connecting remote- home to work. How do I setup the ssh connection on MySQL workbench? Also, where do ...
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1answer
71 views

Grant SSH access to subfolder which is owned by root

I have a folder /srv/jarvis which has punch of subfolder and on of them is called carl (/srv/jarvis/carl) jarvis Dir has these rights drwxrwxrwx 12 root root 4096 Jun 9 11:34 jarvis And Carl ...
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2answers
356 views

Opencl application does not recognize GPU till user physically ( and not remote) logs in to machine

I run some opencl applications on 2x AMD Radeon HD 7870 on a machine running Ubuntu 13.10. I power the machine on and lightdm has the login prompt. Since I cannot physically be present to login to ...
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1answer
716 views

Setup my ssh server, can't connect remotely

I installed openssh-server. I am able to ssh into the server via my ehternet local network, I can ssh from the local host. I have set up port forwarding on my router. I have run 'sudo ufw allow ...
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116 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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30 views

How to do one click VPN, mount, and SSH

I do accessing to my uni shared files a lot and I need SSH to run commands at the uni server, and before I am able to mount I need to first access the uni VPN. I was trying to write a shell batch to ...
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1answer
101 views

ssh pair key authentication problem

I have a problem with public and private key authentication. I do this steps and then, public-key based doesn't work. 1- generate a pair of private and public key (RSA) using the following command: ...
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Access from a remote server after changing permissions

I have Ubuntu on a linux server remotely hosted using Amazon Web Services. I can normally access is using winscp and a private key I have saved on my Windows computer. However, trying to add data ...
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1answer
1k views

Run Gparted over SSH

I am using a laptop with Ubuntu 14.04 and I started building a Samba server at home I am using Ubuntu-Server 14.04 for this machine. I use Webmin and SSH (depending on the job) to configure my ...
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1answer
25 views

Transfer a ssh session between the same physical devices from one network to another

My server has 2 IP addresses via two networks. Due to some restrictions,my client will be able to access only one of the network at a time. Hence, I want a way to transfer a live ssh session with all ...
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1answer
2k views

Problem with hadoop start-dfs.sh

I installed and configured hadoop on my Ubuntu 14.04 server, virtualized inside of hyper-v, however I am getting an issue when i run start-dfs.sh root@sUbuntu01:/var/log# start-dfs.sh 14/06/04 ...
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1answer
932 views

VNC Server Security

First, we need to make sure VNC server only listens on localhost. What is the meaning of this line will it listen remote connection when we onfigure it to listen localhost only? Recommended ...
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45 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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2answers
62 views

Enable to connect to remote server using ssh but i can connect one remote server

When I am connecting to remote server using ip address, I can connect to 192.168.12.141, but I cannot connect to any another remote server. Example: 192.168.12.12, 13, 18 etc... How can I get ...
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1answer
111 views

display custom message on failed ssh server login

Is it possible to show a custom message only to users which failed to login into an openssh server? successful login > no message failed login > display message
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101 views

Modify power / sleep setting via command line SSH

I want to change the power management sleep via SSH for a logged in user I set the value sudo -u user dbus-launch --exit-with-session gsettings set org.gnome.settings-daemon.plugins.power ...
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71 views

How to clear the screen on vi exit?

In my experience on many different servers, vi has always cleared the screen when returning to the shell. But on my new Ubuntu VPS, it does not. The contents of the file stay on the screen until new ...
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83 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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1answer
104 views

Can not clone git repository setup using filesystem permissions but can ssh

I've setup a local git server on Ubuntu 12.04. The repos can be cloned locally on the server, but I can not clone the repo from another server. I can ssh to the server with the same config. ...
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137 views

Best/Cannonical Way to set up ssh-agent on Ubuntu Server?

Unlike Ubuntu Desktop, Ubuntu Server does not come with ssh-agent pre-installed and conveniently set up and running. I see plenty of suggestions on the net how to do it, but is there a best ...
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49 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 ...