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

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How to ensure user separation on an old school shell server

I want to run an old school shell server for a couple of people, ie. one where users get ssh access so they can run software (their own or provided). My concern is appropriate separation between ...
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0answers
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Apache2.4 PHP 5.6 Ubuntu 15.10 No Input File Specified

I am running a VPS with Ubuntu 15.10 using Apache 2.4 as my web server and I am kind of new to servers and stuff but I am currently creating an API. I first did this on my localhost. This worked ...
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1answer
4k 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 ...
0
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0answers
5 views

Can I use a UDP connection for the “Connect to server” option in file manager?

I work a lot on remote mashines and like to bookmark them in my file explorer using sftp://user@host/initial/dir syntax. In unstable networks, this connection keeps breaking off an I have to ...
12
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4answers
3k views

Personal computer hacked: How do I block this user from logging in again? How do I find out how they are logging in?

I am 99.9% sure that my system on my personal computer has been infiltrated. Allow me to first give my reasoning so the situation will be clear: Rough timeline of suspicious activity and subsequent ...
75
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11answers
76k views

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 ...
0
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2answers
29 views

How to expose ssh to the internet?

I run the search on google and ALL I can find is a bunch of nonsense about how dangerous it is to do this with only a password...followed with a link to the instructions on the ubuntu website for ...
0
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0answers
15 views

Check status progress on running rsync

I have started a rsync task via terminal on my local ubuntu machine to copy files from one local HDD to another local HDD with the command rsync -a --progress source destination. Hence I am able to ...
0
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1answer
27 views

Send ZFS snapshot to remote machine

Edit: This question originally focused on the issue of reversing the direction of the ssh connection on the transfer, but I came to realize that wasn't what was causing the problems I run into, so I ...
0
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0answers
20 views

Cannot SSH into server from one particular computer (connection closed/did not receive auth string)

I'm having trouble using ssh to access a server that I recently set up with 16.04, but only from a specific computer (my laptop). When I run ssh -vvv -p sshPort user@host, I get this output: ...
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0answers
8 views

Autossh fork after entering password

I have an SSH tunnel that I run with autossh to keep it going reliably. The only issue I have is that I have an encrypted private key which I use to connect. If I want to fork my process to the ...
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2answers
1k 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 ...
3
votes
3answers
10k views

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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0answers
48 views

sshd in Ubuntu 16.04 - login takes very long

I've seen ssh logins take some seconds many times before in the past. I always found that inappropriate. After I reinstalled my workstations with Xubuntu 16.04, this effect became really disruptive. ...
0
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0answers
14 views

MPI-programm tries to access via ssh(?)

I got an MPI code which I can't get running. All needed libraries are installed and compiling works with no problem. But when I start the code mpirun -n 2 ./a.out the terminal freezes after some ...
0
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0answers
7 views

Use vpnc For Specific URL And Port

I'm on Ubuntu 14.04 and I use vpnc client to connect to a client's network. However due to this all of my traffic (web browser, streaming, skype, etc) gets routed through the VPN even though I only ...
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0answers
26 views

HDMI screen gives “no signal” but VNC screen shows window manager correctly

My Ubuntu 12.04 kernel is running perfectly fine and even the desktop shows in all its glory when I connect via a VNC client from my Mac. It even recognizes my HDMI monitor that is physically plugged ...
1
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1answer
11 views

can't ssh into remote machine using blowfish

I have a remote machine I need to ssh to using blowfish encryption. I set everything up on my laptop on my previous distro and I have in my config file setup for blowfish. Today I install Ubuntu Gnome ...
4
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3answers
2k views

How do I disable gnome-keyring ssh integration?

I don't want gnome-keyring to get in the way of my git commits, partially because it locks the entire screen while asking for a password, even on KDE (though I have now switched to GNOME). While I do ...
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1answer
134 views

Can not install openssh-server on Ubuntu 16.04

As a fresh new install of Ubuntu 16.04 sudo apt-get install openssh-server outputs Also it is a fress install I could not understand why this happens. dpkg -l openssh\* Output is If ...
2
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3answers
368 views

Ubuntu 16.04 ssh: sign_and_send_pubkey: signing failed: agent refused operation

I just upgraded my Ubuntu System from 15.10 to 16.04 by completely wiping the Ubuntu 15 partition from my system. After installing Ubuntu 16.04 I recreated my ssh keys as I forgot to back them up, ...
228
votes
12answers
363k views

How to get bash or ssh into a running container in background mode?

I want to ssh or bash into a running docker container. Please, see example: $ sudo docker run -d webserver webserver is clean image from ubuntu:14.04 $ sudo docker ps CONTAINER ID IMAGE ...
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1answer
7k views

“PTY allocation request failed” error when trying to connect using SSH with ControlMaster

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
27 views

Not able to ssh as root on 14.04.2

I have done all the workarounds, yet, I am still not able to ssh as root. I have already modified PermitRootLogin to yes, and I have reset ssh services. I have even rebooted the VM, but it is just not ...
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4answers
3k views

SSH keys not working

I'm using ssh-keygen to generate a key on Ubuntu 10.10, then using ssh-copy-id to copy the key to two remote machines that are running 10.04 (one desktop, the other server). But here's the thing: I ...
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2answers
293 views

14.04 - VPN established but ssh kills it

I have 14.04 LTS installed on my laptop (VMWare image) and I establish a VPN connection to my home. All that works fine, but when I want to use ssh on my laptop the VPN connection dies immediately. ...
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0answers
15 views

How to export the gui of an already running program to the remote computer via SSH? [duplicate]

I have pycharm on my desktop and I would like to access it from my laptop over ssh without having to close pycharm on the desktop (since I frequently have long tasks running). Currently, I am able ...
0
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1answer
22 views

xrdp on ubuntu server

I have set up xrdp on my ubuntu server 15.10, with mate desktop environment and it all works fine and dandy. Except for when I enable UFW. I have the following ports allowed all tcp 2222 (ssh) 3389 ...
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0answers
162 views

vagrant box for ubuntu/xenial64 and putty on Windows 10 host

I am using vagrant to run some virtual machines on my personal laptop (Windows 10). I have already installed ubuntu 14.04 and centos on this laptop and all works as expected. Today I tried to ...
1
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1answer
44 views

Still being Prompt for Password After enabling Public Keys

When I added my public key into my .ssh/user/authorized_keys file and I saved and restarted my server it gave me this error: initctl: Unable to connect to system bus: Failed to connect to socket ...
0
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2answers
774 views

ssh port-forwarding through a server

In order to access to my pc at work i do: ssh -AY myusername@server_of_the_company and then: ssh -AY myusername_at_my_pc@ip_address_of_my_pc I read about ssh tunnelling but i cannot make it ...
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0answers
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SSH Not working !! and scrpit [on hold]

I have a problem with the server did not find her in other servers When installing any scripts such as: - Easy-Wi , bgpanel These scripts require connect ssh I tried every way not related !! Knowing ...
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8answers
74k views

Why does ssh's “password” prompt take so long to appear?

When I try to ssh, the password prompt takes too long (almost two minutes) to appear. Why does this happen?
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4answers
2k views

Can i configure ubuntu to append a domain to the end of an ssh hostname request?

I have many servers and they all end with the same servers.company.net, so for example vded-xx-001.servers.company.net, and was wondering if it is possible to make it so i can just type the ...
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1answer
263 views

After moving home directory, ssh configuration is not working

I moved my home directory from /home/user to /media/newDrive/home/user. Everything seems to be working at first, except my ssh configuration. I was able to log into this machine from my laptop with ...
0
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2answers
6k views

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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4answers
28k views

Why do I get this warning from Gnome keyring in Xubuntu?

I have installed xubuntu-desktop ontop of a stock Ubuntu installation. When using ssh, or more specifically git, I always get this warning WARNING: gnome-keyring:: couldn't connect to: ...
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1answer
4k views

Permission denied (publickey,gssapi-with-mic)

I am trying to connect to a VM using this command: sudo ssh -i /home/ritesh/.ssh/id_rsa1 tc@54.80.22.15 -L 5901:localhost:5901 But it's giving me this error: The authenticity of host '54.80.22.15 ...
0
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1answer
49 views

Troubleshoot ssh prompting for password

I am using Ubuntu 15.10 and I am having trouble to login through ssh without password although I added my ssh keys. It was working before and then suddenly stopped working. I do not know what I did ...
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0answers
15 views

Agent admitted failure to sign using the key

After a fresh ubuntu install, it seems I can't use any bzr branch commands. I get the following error: Agent admitted failure to sign using the key. Permission denied (publickey). ...
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0answers
13 views

IP changed and can't start Xwindows now

Client PC: Windows 7 with Putty 0.63. The IP changed on this PC. Ubuntu 14.04 Ubuntu shell: bash On client PC the Xwindows server is Hummingbird Exceed v14. All this worked fine until my client IP ...
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0answers
50 views

cannot ping or ssh, can connect to localhost

I can connect to the localhost using: ssh root@localhost However, when I try to connect to my Amazon EC2 instance using ssh, it says: ssh: connect to host ...
1
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1answer
30 views

How to tell git not to use rsa key but username + password

I guess I messed with my ssh configuration. Lately I cannot clone a local repository anymore. It seems like the git repository is accepting both publickey and password but instead of letting me ...
3
votes
3answers
26k views

How can I allow access to both SSH and SFTP?

I started from the following article to set up SFTP on Ubuntu Server: http://blog.srmklive.com/2013/04/24/how-to-setup-sftp-server-ftp-over-ssh-in-ubuntu/. If I follow these instructions, I can ...
0
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0answers
62 views

How can a user account be disabled?

I've had a Ubuntu 12.04 LTS VM machine running my web sites for the past 2 years, on Windows Azure. I hadn't logged in for a few weeks, and today I tried to log in, via PuTTY/SSH username/password, ...
0
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1answer
8k views

Ubuntu Desktop 15.04 Installing openssh-server : missing dependencies

I recently installed Ubuntu Desktop 15.04 in a VM. I chose this version as opposed to using the Server image just to have a pretty GUI to click. Upon checking, there isn't an SSH server installed ...
2
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1answer
4k views

SSH: Can connect locally but not “remotely”

A bit of background: I'm a ubuntu user for almost a year now. I had an old box lying around and decided to put it to some use. The first thing I wanted to do was set up SSH so that I can place it in a ...
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2answers
51 views

Know Ubuntu Distribution server or desktop

I am asking question after googling and I tried multiple solution but need a specific answer. I have logged in another pc with SSH and I need to know that the OS distribution is server or desktop. ...
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1answer
22 views

SSH Terminal like SecureCRT

On Windows I used to use SecureCRT and GNS3. Ubuntu also has GNS3 and its free. Is there a free alternative to SecureCRT, an SSH terminal which has a multi-tab facility to access multiple routers at ...
0
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1answer
28 views

How can'i pass this “ openssh-client' has no installation candidate ”

I am trying to use ssh command, but I have this: sudo ssh git-codecommit.us-east-1.amazonaws.com [sudo] password for dali: sudo: ssh: command not found So when i am trying to install ...