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

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problem with using Private Key in git

sorry if this question seems so easy but I'm new with UBUNTU and I still couldn't figure that out. I've been given a private key with password to clone and install a software from a repository using ...
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3answers
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How to start GUI application on a remote Ubuntu box via SSH

I can log into the remote Ubuntu (Kubuntu 12.04) machine. Using the info from (How to start a a GUI software on a remote Linux PC via SSH) I tried the following after logging in: user@Kub:~$ export ...
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1answer
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Problems using the start-dfs,sh on hadoop 2.2.0

Im using this tutorial for installing hadoop 2.2.0 http://codesfusion.blogspot.in/2013/10/setup-hadoop-2x-220-on-ubuntu.html I've completed many of the steps successfully but I'm stuck over this ...
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3answers
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copy ssh private keys to another computer

I need to use another computer to access my ssh server. This is because a recently implemented vpn at my university doesn't work on my current computer and I have lost access to the server. I ssh ...
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6answers
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Trying to do ssh authentication with key files: server refused our key

I'm trying to setup ssh authentication with key files in stead of username/password. The client is a Windows box running PuTTY and the server is a Ubuntu 12.04 LTS server. I downloaded puttygen.exe ...
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2answers
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How to launch a new instance of Google Chrome from the command line?

Is there any way I can launch a new instance of Google Chrome from the command line? I'm not referring to opening a new window - I want a new instance. Here's why: Suppose I open Chrome and navigate ...
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10answers
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How to harden an SSH server?

What measures can/should I take to make sure that security around my SSH server is absolutely impermeable? This will be community wiki from the start, so lets see what people do to secure their ...
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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
10 views

IPTABLES - Forwarding 80 to 8080 to vagrant's apache

I was trying to forward my 80 access to 8080 with IPTABLES without success, then I read this answer And it finally worked for me, after all the IPTABLES configurations I tried this command made it.. ...
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1answer
14 views

Generate SSH key on computer A and use it to SSH from computer B to computer C [duplicate]

I'm doing some provisioning work, and it happens that I now need to do something I've never done before that I'm completely stumped on how to do. I need to be able to generate an ssh key pair ...
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1answer
16 views

Is there anyway to show VirtualMachine after start it with VBoxHeadless?

I've installed a VirtualMachine to work on the background. I use SSH to control it via terminal. But, sometimes SSH service didn't work properly and I can't access the VirtualMachine outside. All I ...
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2answers
4k 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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26 views

After reboot, ssh refuses connection

I've never touched sshd_config, all ports open (22, 80, 443), ssh status says ssh server is running. I had all working before reboot perfect, now it´s all dead and I can't enter site, neither using ...
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1answer
20 views

Website, SFTP, SSH in home directory for multiple users

I need a little help with configuring Ubuntu Server 14.04, apache2 and SFTP for multiple separate users. Every user needs to have website in his home directory, for example: /home/user/public_html ...
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2answers
19 views

How can I remove a specific known_hosts entry without deleting the file

When I try to ssh to my server (I reset the server) I get the usual "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" I then run the suggested ssh-keygen -f "/home/XXXX/.ssh/known_hosts" -R xxx.com ...
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4answers
21k views

What is the password for ``ssh root@localhost``?

I need to ssh to localhost using root account, by ssh root@localhost. When it prompts for passwords, I can not login with all possible passwords. On setting of localhost machine, regular user xxx and ...
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0answers
20 views

“Permission denied, please try again.” ERROR when trying to connect to localhost through ssh

I know this problem has been discussed several times in the forum but none of the steps recommended to remedy the problem have worked in my case. In the following I will describe again the problem ...
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1answer
41 views

Easiest/Best way to forward Ubuntu desktop to windows?

I already have PuTTY and Xming working, so I can forward individual apps. But I'd really like to be able to simply forward the entire unity desktop. I've seen advice pointing me at VNC, but while I ...
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8 views

monitor network connectivity faults?

I am suffering poor connectivity when i work at home. Frequently I see write failed broken pipe and other errors indicating that Ive lost connection. I would like to complain to my service provider, ...
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1answer
3k views

How to ssh from windows to my ubuntu machine in the local network

When I'm trying to ssh to my local ubuntu server from the gitbash on my windows machine Im getting this error: $ ssh 192.168.1.11 ssh: connect to host 192.168.1.11 port 22: Bad file number Other ...
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9answers
35k views

Server keeps asking for password after I've copied my SSH Public Key to authorized_keys

I have an Ubuntu Server, running in a Cloud. I created a user (git). In the folder /home/git, I have created the .ssh/ dir, and the authorized_keys file. But, when I put my SSH Public Key in the ...
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1answer
48 views

Permission denied for root@localhost

I installed ssh on my laptop running Ubuntu 14.04 LTS when I open terminal and type "ssh localhost" it seems to work fine, I get the notice displayed and the last log in time. like below ...
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29 views

Can't SSH into Ubuntu server

Appreciate thoughts on how to debug this situation: built a headless box with Ubuntu server 14.04.1 LTS, and installed Plex and SSH server. For several months, everything was running fine, but in the ...
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390 views

Cannot ssh my server after reboot

I have a linux server at my mom's house that I access through ssh from my house. It has been working fine until I rebooted it tonight; I actually rebooted it twice and it went fine and after the ...
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4answers
4k views

Can't ssh into server, connection refused

I can't ssh into my server. The server is on a private network administrated by me. Ubuntu is version 14.04. This started when I changed to a wired ethernet card. The client is MobaXTerm (latest) ...
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3answers
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Enter SSH passphrase once

Before upgrade When I was running git clone git@... (using ssh) once per computer restart a window dialog was appearning that was containing a textbox where I was intersting my ssh passphrase and ...
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13 views

NX Client for Linux connection timeout

I have a problem during connection with NX Client for Linux. I am using Ubuntu and when I try to connect I get a message after some time which says Connection timeout. I checked the connection with ...
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2answers
29 views

CHKCONFIG NOT working on UBUNTU 12.04.4

I am trying to install chkconfig in Ubuntu 12.04.4 but it is not installing. I have tried most of the solutions available like apt-get install sysv-rc-conf update-rc.d All of the above is giving ...
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1answer
31 views

SU setgid: PERMISSION DENIED, SUDO: PERM_ROOT 0, -1, 1 PERMISSION DENIED

Hi I have a problem that I cannot solve. I cannot log into root, su, or sudo. Everything works fine via ssh so I tried on ssh via putty: Set root password: sudo passwd Add user to sudo/admin ...
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0answers
65 views

SSH using Terminal / Terminator is “very” Slow (at the connecting time) Compared to putty

i searched in all stackexchange website, the same question is asked few time and I did all that mentioned in those threads...but still when doing a SSH to a remote server using terminal during the ...
2
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1answer
155 views

Trying to understand my first server set up

I am trying to set up my first server and stack. I spent a week trying to do it on a virtual machine but could never get the ports to forward correctly so today I just dedicated the full machine. I ...
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4answers
6k views

Key-based SSH login with Nautilus' “Connect to Server”

I tried loggin into an SSH server via Nautilus' "Connect to Server" feature by just leaving the password blank, but that didn't work. How do I connect to my server using the key I have on my system? ...
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1answer
18 views

“Connection reset by peer” / Lubuntu dropping connections?

Linux version 3.2.0-67-generic (buildd@toyol) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #101-Ubuntu SMP Tue Jul 15 17:45:51 UTC 2014 I'm not sure if it's the place to ask this, but my best ...
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0answers
25 views

How can I start a LightDM session via SSH?

I'm connected to an Ubuntu 14.04 machine via SSH and I want to start the lightdm session for testing purposes. I don't want to forward the X server to my local machine. I just want to start the ...
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1answer
13 views

How can I use SSH aliases with rsync?

I can successfully use command ssh myVDShost without password to connect my VDS host. But when I use command sudo rsync -azP myVDShost:/home/ /mnt/myextdisk I get error: ssh: Could not resolve ...
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0answers
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How to bring all ClusterSSH windows to the front?

Is there a way to bring all the windows of a ClusterSSH session to the front? After a while entropy builds up and some windows end up minimized, others end up behind other windows, and so on. ...
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2answers
57 views

Can't SSH into Ubuntu Touch device

From my computer: cameron@cameron-ubuntu:~$ ssh phablet@192.168.99.124 Permission denied (publickey). So it seems that openssh on the phone doesn't have password authentication enabled. But it ...
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3answers
1k views

SSH asks for password

I have already : Installed the server Generated the pub/pri keys with -P "" Copied the id_rsa.pub to authorized_keys ssh localhost > answered "yes", copied to known_hosts tried ssh localhost >> ...
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1answer
12 views

How to make Juju connect to Openstack VM using ProxyCommand / ssh config?

My Openstack VMs in my setup can be only access using a gateway machine. I always need to use a ProxyCommand to connect to them. Now I work with juju and, after setting up metadata and tools, I run ...
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0answers
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Can't remember password [duplicate]

apophis9283@apophis9283-desktop:~$ ssh apophis9283@64.184.112.2 Password: Password: Password: apophis9283@64.184.112.2's password: Permission denied, please try again. apophis9283@64.184.112.2's ...
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0answers
23 views

OpenMpi cluster in Ubuntu 14.04 LTS

I have setup the clsuter as per the guidelines and steps provided on the link https://help.ubuntu.com/community/MpichCluster I am able to login (without entering password) from mater to slave as well ...
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2answers
5k views

How to install software raid 0 on ubuntu 12.04 server with mdadm?

I need to install a software raid-0 array on a Ubuntu 12.04 server with mdadm through commandline (SSH). The drive setup is as follows: SDA = OS SSD SDB = HDD for raid 0 SDC = HDD for raid ...
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2answers
1k views

take changes in file sshd_config file without server reboot

I change configuration in file /etc/ssh/sshd_config but got effect only after reboot server. How to take changes without rebooting server?
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0answers
37 views

problem editing sshd_config

We currently have a vulnerability in SSH (Ubuntu Server 10.04) that requires us to remove MD5 and RC4 from SSH, we did it correctly in 4 servers, but when we edit it on one server in particular and ...
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0answers
30 views

SSH key stopped working on Ubuntu Azure VPS

I have an Ubuntu instance that I'm running on Azure. I've been using it for the last 6 months or so to level up my novice Linux admin skills. Yesterday I was configuring a Capistrano deployment to ...
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1answer
32 views

ssh session not terminated at reboot/halt from putty after upgrade to 14.04

After my server upgrade to ubuntu 14.04 when i do reboot or halt from putty, server reboots normaly but ssh session is not terminated by the server as before the upgrade. Can anybody help? Thank you!
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Strange entry in open file list on Ubuntu server

On my Ubuntu server I occasionally run the following command to view any open files that are TCP connections from my server: lsof -uroot | grep 104.236.XX.XXX The last time I ran it, I saw this as ...
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0answers
38 views

Thunar can't mount server over SSH

I am trying to mount a server directory in Thunar on a computer running Xubuntu which I'm connected to over SSH with X forwarding enabled. I connect to the computer with ssh -YC username@computer.ip ...
0
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1answer
30 views

Install Ubuntu Server via SSH

I registered for a domain and a online hosting on GoDaddy.com. I only have access to it via their website and SSH. Is there any way to install Ubuntu server on this so that I log into Ubuntu via SSH ...
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1answer
3k views

SSH: Permission denied, please try again. While tryng to connect to remote 12.04 server

I'm having quite the head ache because of this. The day before yesterday I rented a VPS at atlantic. They provided me with vnc and root's ssh credentials. I could only login through a VNC viewer ...