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

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Hadoop in Ubuntu : Unable to create Passwordless SSH

I am learning Hadoop and trying to create the passwordless SSH following the procedure in define in the Book : Hadoop: The Definitive guide Configuring SSH Pseudodistributed mode is just ...
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2answers
567 views

What is the Ubuntu equivalent of OSX `chmod -h` flag?

In OSX I can set the permissions of the symlink itself (instead of the thing it points to using the -h). From the man page: -h If the file is a symbolic link, change the mode of the link itself ...
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34 views

Port 22: connection refused

I am pretty new to Ubuntu so please if you can answer to this question explicitly. I have two laptops one is running on MAC OS X 10.8.5 (OS X Mountain Lion) and the other one running Ubuntu 14.04 LTS. ...
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unlock kwallet at login

before plasma 5 I had my kwallet unlocked at login and it worked well (same password for kwallet as for my session). Now, with plasma 5, it does not work anymore, I think I'm not far from working ...
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15 views

connecting ubuntu via ssh in azure cloud :bad file number port 22

I have successfully created virtual machine(ubuntu) in azure cloud,after that i am connecting it through ssh.For the first time its worked and i installed lampp stack an vsftpd on it.But now i will ...
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Could not load host key: /etc/ssh/ssh_host_ed25519_key in /var/log/auth.log

I have an Ubuntu 14.04 instance running on AWS. I was browsing the auth logs (/var/log/auth.log*), and noticed the following line appearing: Could not load host key: /etc/ssh/ssh_host_ed25519_key ...
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18 views

I can't get ssh:// links to open in a simple index.html webpage

I want to have an ssh link open up on click. I am having students VNC to an Ubuntu VM for them to learn Linux on Cumulus Linux switches. I was reading this thread: How to change what xdg-open does ...
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1answer
35 views

Accidentally run command rm -R in Amazon EC2. Unable to login

I'm using Amazon EC2 for Magento website and WinScp to access SFTP. Sometimes I'm using terminal in WinScp to execute command. Today I need to delete some files so I used rm -R /* and forget to ...
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1answer
38 views

How to create a SFTP (SSH) User with extremely limited permissions

i run a server on Ubuntu Server 14.04. I want to create a user that is able to connect via sftp, download 1 file and terminate the connection. The user should not be able to do ANYTHING else. Browsing ...
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34 views

Apartment Network Issue

Ok so I'm trying to SSH into my home machine from work/school. Problem is, even though I set up my router appropriately, I can only ssh into it when I am in my apartment's network (not my own ...
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13 views

Enable Vino Script Help

I have been trying to add and enable Vino to our districts Ubuntu laptops but have come up with some issues that I can seems to find a solution to and i was wondering if you might be able to assist. ...
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10 views

Linux VPS - OS X SSH Tunnel / SOCKS Proxy works but cannot get to work in Windows [closed]

I setup an ssh tunnel to my ubuntu VPS from an OS X machine like this: ssh -p 12345 -N -D 9999 root@128.222.222.222 password: * etc. I have tried to follow many a guide on how to use either putty ...
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2answers
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rsync over ssh “error in protocol data stream” (code 12). ssh works

I tried: rsync -v -v -e 'ssh -p YY' ./testfile me@XXXXX:/home Error Message opening connection using: ssh -p YY -l me 146.6.84.206 rsync ->-server -vvve.s . /home [sender] ...
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1answer
30 views

setting up a SSHserver [on hold]

Could anyone explain me the configuration for a SSH server. I am new to administration so not fully aware of the options available at the config. My purpose here is to create a SSH server. And what I ...
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2answers
21 views

Is it possible to sign in to server via SSH without SSH key?

So what has happenend, is that I have a Ubuntu 14 server. I have my SSH key uploaded to the server, and a password. I only have one user; root. The problem is now, I formatted the computer on which I ...
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1answer
45 views

Why does shutdown from a remote terminal fail to power off my machine? [duplicate]

I have noticed that if I shutdown Ubuntu 14.04 from a remote terminal via ssh and running sudo shutdown now, the machine does not power off. If I use the GUI (shut down using Unity on the machine ...
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15 views

SSH by key incredibly slow

SSH connecting with key, from my machine suddenly got incredibly slow (~10sec!). It is not a server or DNS problem as far as I can figure out. The problem suddenly appeared after a simple apt-get ...
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13 views

SPAMHaus/ CBL Blocking List:: UNIX System (Firewall)

I am no linux/ unix guru but CBL and Spamhaus are blocking us every 8 hours roughly and recording it as SPAM. I have completed their instructions to do the following but am concerned i have done it ...
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1answer
26 views

Search specific word inside document using ssh [duplicate]

Currently i have to analize some big files looking for a espefic word in .css located on my /var/www/ located on ubuntu server (ssh). There a way to make something like Ctrl+f in windows ...
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1answer
36 views

scp - files getting different sizes in destination folder

While using scp, the total file size was noticed to be 0.1G less in the destination folder and, a few files were noticed to be larger in size in the destination folder. What could have caused this? ...
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1answer
13 views

'Screen -h num ' not working on ubuntu

I am logged into my remote server using ssh and then running a process using screen. I started a screen session using screen -h 5000 so that I can scroll up the screen to see the console output. But ...
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15 views

cannot connect to ssh or webservice of server, all applications running [closed]

Cannot connect ANYMORE to debianserver with SSH and webservice running, the services are started and working AND the applications running on webservices are answering on other ports. Any ideas In the ...
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28 views

Send text from remote ssh to login screen [closed]

I've a Ubuntu machine which runs 15.04 unity desktop environment. I've successfully set up remote ssh using openssh. I want to remotely start graphical applications (on the remote machine) which I do ...
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2answers
12 views

Created a new OpenSSL key and I don't know where my CSR file is?

Still learning a lot about Ubuntu and server management. I need to generate a new SSL certificate and I have followed a tutorial on how to create the CSR file. I ran the following command: openssl ...
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1answer
31 views

OpenSSH client not connecting after deleting id_rsa

So I stupidly overwrote my id_rsa and id_rsa.pub files earlier, and I just decied to rm -rf the whole .ssh folder because it was all corrupted/broken after tinkering with it. Ever since that when I ...
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1answer
20 views

“xsp4 address already in use” and “access forbidden”

I'm taking over a project from a coworker who recently left. I'll be working by myself on a website that runs on ASP.NET through mono on a xsp4 server. I'm new to linux and the ASP.NET framework so ...
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1answer
27 views

Can a user with ssh keys set their own password after logging in with keys without knowing their password?

I'm playing around with a script to create a user across a number of machines. I'd like to not know the users password at any time, but having the public SSH keys is quite acceptable to me. The user ...
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How to forget sftp password in Nautilus (none in seahorse)

I added the entry sftp://daniel@<somedomain> to my bookmarks in Nautilus. The first time it was accessed it asked for the password but never after that. I cannot remember which option I selected ...
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42 views

ssh with .pem file to amazon instance Permission denied (publickey)

I am trying to login to instance on amazon using, my ".pem" file has 600 privileges: ssh -v -i FTPServer.pem ec2-user@ec2-xx-xxx-xxx-xxx.compute-1.amazonaws.com i tried all possible users ...
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1answer
55 views

Cannot SSH into home desktop

I've installed openssh-server, I've edited /etc/ssh/sshd_config to look as follows # Package generated configuration file # See the sshd_config(5) manpage for details # What ports, IPs and protocols ...
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32 views

SSH to Ubuntu Desktop [duplicate]

I've setup an SSH server on my Ubuntu desktop at home using a dynamic DNS service (NOIP). I have a wi-fi-only Android tablet running Android version 4.4.2. Port 22 is forwarded, ufw is disabled ...
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85 views

Messed up with my ssh_config file. How can I recover the original file?

I was setting up ssh on Ubuntu. I accidentally copied the contents of sshd_config in ssh_config file! Is there a place where I can find the original one? Fortunately I didn't touch the ssh_config. I ...
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0answers
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Openstack, Connecting to nova, error: Cannot initiate connection

I am new to Openstack, I've installed it using devstack. I launched an instance using ubuntu server cloud image with heat flavor. I can ssh to the instance. The problem is when trying to do: sudo ...
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56 views

How to fully disable kde wallet?

I'm on kubuntu 15.04. I'd like to use ksshaskpass, but whenever I run it, I get requestor to create kdewallet. I did disable kdewallet, as shown in How to disable KDE Wallet? , any my config files ...
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42 views

Ubuntu server 14.04.02 unresponsive with most of the commands (Ping, etc…) after apt-get dist-upgrade

[EDIT] Seems solved, problem with name resolution suddenly disappeared [/EDIT] I have a Ubuntu Server 14.04.02 on a private server with generic kernel installed, that I can still SSH into. Welcome ...
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1answer
9 views

Disallow VNC if not via a SSH tunnel?

How can I disallow VNC if the connection isn't via a SSH tunnel?
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1answer
30 views

Openstack, ssh ubuntu instance: permission denied

I've installed devstack, downloaded a trusty ubuntu server image, launched a heat flavor instance, created a public ssh key, all fine. But when trying to log in with ssh -i key.pem ubuntu@ipAdress I ...
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6 views

SFTP Help with Public Keys [duplicate]

So I feel like I'm hitting a wall with openssh. Steps that I have taken: I have setup a usergroup called ftp, added a user(lets say user1) to the group. I then setup openssh, here is my edited ...
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44 views

Redirect traffic flowing into SSH server to privoxy, then to TOR

I own a Ubuntu VPS that I am using for SSH tunneling. I want the traffic to be redirected to TOR network. Some research showed that I can do it by using Privoxy, that will accept traffic from SSH ...
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29 views

Multiple sftp users and access to a /var/www subdirectory

I have some users on my Ubuntu server with vsftpd installed. The server is used as web server and has a shared sftp directory that is accessed by public clients (by giving them the user and password). ...
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1answer
25 views

Secure Shell isn't propery loading .bashrc

I've got a seemingly simple issue - I have a 15.04 server that I connect to via ssh. Currently, I have a couple of folders added to my PATH environment variable in my .bashrc file: #... (rest of ...
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152 views

Unable to ssh remote unlock encrypted ubuntu server 15.04 using dropbear/initramfs

So I'm trying to set up a brand new Ubuntu 15.04 headless server with full disk encryption and remote unlock capabilities. I've done this successfully on a raspberry pi running Raspbian-Wheezy, and ...
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12 views

sftp with triple ssh hops

I want to transfer files (in both directions) between my computer ("comp1") and a remote computer ("comp2"). In order to connect, I need to pass two servers along the way ("server1" and "server2") via ...
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35 views

udev/dpkg error

I'm getting this strange output every time I try to execute a command through SSH on my VPS (Ubuntu Server 15.04) which doesn not allow me to install anything. Any suggestions ? Job for ...
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1answer
28 views

Add existing ssh key for git

I am and my friend working on the same project, he has ssh permission for repo, he gave me his ssh key and I want to import it to my id_rsa.pub, but after I get Permission denied error when want to ...
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1answer
28 views

Lastlog grows to 4.2G after SSH logout

Running a VPS with Ubuntu 12.04.5 LTS. Noticed a spike in disk usage. Turns out the culprit is lastlog. Overwrote it with >/var/log/lastlog. After logging out of the session and logging back in, ...
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66 views

Want to enable root direct login to telnet/ssh/ftp

I am pretty aware of security risks. But its been a burning need for me to enable root direct login with ssh/telnet/ftp ? Would you please share the procedure this? I have enabled direct root login, ...
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1answer
53 views

How did I login to another server without my private key?

I just had a very scary moment, which forced me to wonder about the security of my private SSH key. Here's what happened: Logged into my server using my SSH key. Gave the entry for my public key ...
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69 views

Ubuntu MATE SSH Keys Not Working

I recently moved to a new place, made no changes to my SSH keys, and for some reason I can no longer authenticate via PuTTY to my Ubuntu MATE box. Has anyone encountered their SSH keys randomly stop ...
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2answers
60 views

GUI SSH for Ubuntu 14.04 [duplicate]

My question is simple. Is there any ssh client in ubuntu 14.04 that has GUI. I need it to remotely access website files and update them.