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

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ssh ldap AuthorizedKeysCommand

I have mounted an LDAP server, I generate certificates for my users and I wanted to store certificates in ldap (certificates itself, not their directories), I found the following scheme used to store ...
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ssh / scp / sftp slow. Transfers seems to be capped at ~64kb/s

Machine details: mediacenter@mediacenter-Aspire-R1600:~$ uname -a Linux mediacenter-Aspire-R1600 3.19.0-51-generic #58-Ubuntu SMP Fri Feb 26 21:22:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ...
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Printing over ssh: “cat file | lpr” or “lpr file”

I am looking at how to print a file over ssh. Two websites (The Linux Documentation Project and Computer Hope) suggest the command "lpr" but both seem to suggest two different methods, with no obvious ...
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Jails user in your home

I have VPS with many users, but i need jails user in your home. Example: User1 access /home/user1/public_html User2 access /home/user2/public_html Both can use SSH, but may not have access to ...
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32 views

ssh_exchange_identification: read: Connection reset by peer

I really do not know much about ssh. I only know how to type some commands to get into my machine in my office when I work from home. Today I got some updates on my Ubuntu 14.04 machine, a new kernel ...
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Logging into WordPress using SSH

I've got a WordPress test server installed on the local system on Ubuntu Server 14.04. I want to use SSH rather than FTP to access the wordpress site, install plugins and so on. I've followed this ...
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29 views

All users were deleted from the server

I restored the access using recovery, but something weird happened: all users, except root and ram were deleted from the server, could've been that system was compromised, but nothing else is touched ...
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How to set up X11 forwarding in byobu inside a LXC container

I currently SSH into a LXC container running in a Ubuntu host machine. I have managed to set up X11 forwarding from the container to my local machine but when I start byobu (inside the container) the ...
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Cant SSH to remote server trought VPN

Currently am running Ubuntu 16.04 with installed and configured CiscoAnyConnect VPN. When I connect to VPN, I can't ssh to remote servers. SSH is just standing and nothing is happening. I can ping ...
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160 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. ...
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704 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 ...
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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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106 views

Error when running “vino-preferences” on Ubuntu 15.10

I'm trying to configure and enable remote login on an Ubuntu 15.10 machine by connecting to it using ssh from Ubuntu 14 machine. On Ubuntu 15.10 machine, I've installed vino using the following ...
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31 views

scp syntax question

I'm having a little difficulty using scp to transfer files from a remote computer. The issue apparently has to do with the name of the directory the files are contained in. They're on a CD drive ...
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78 views

PHP not loading ssh2 extension after successful installation

I was getting this error, when running my PHP script to download files using SFTP: PHP Fatal error: Call to undefined function ssh2_connect() I installed the ssh2 PECL extension by running the ...
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Tile server performance seemling inconsistant with SSH Launch vs 'Local' Launch

I am setting up a Dell PowerEdge R410 as a tile server (i.e. a server which serves web map images á la Google Maps) and experimenting with TileStache -- a Python application which handles HTTP ...
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How to Show History of Port State/Activity?

Let's say I have an open port on my PC like 6789. I use this port for a special purpose. But, suddenly I found the port 6789 is not listed in netstat -ntlp (port closed). How can I see the history of ...
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37 views

fail2ban: how to immediately ban those who attempt ssh userid logins

My OpenSSH server is set up to only allow key based logins. I get many attacks each day from bots trying to login using a userid and password. I have fail2ban configured and running already. How can I ...
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33 views

Ubuntu server in VirtualBox: no connection to host

For an assignment I need to host 2 websites using nginx. The default page worked yesterday, now it doesn't (I haven't changed anything significant though) and I also can't open an SSH connection ...
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19 views

openconnect: connection destroyed after ls and unable to use sftp

In the past I have used Cisco AnyConnect under Mac OS to connect to a remote system at my uni. This worked perfectly. Now I wish to do the same thing under Ubuntu 14.04, however Cisco AnyConnect has ...
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45 views

Troubleshooting Ubuntu via Remote Terminal

In a situation where an unscheduled system reboot occurred on an Ubuntu environment and the only way to access the device is via Remote Terminal. What are some of the things you ...
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91 views

Why does remote SSH connection time out?

My server runs Ubuntu Server 14.04. When connecting over SSH from a local LAN client it works fine. When I connect using a different machine from an outside network, I get 'connection timed out'. I ...
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133 views

SSH client on Ubuntu 15.10 is not working with public key

I am trying to ssh from my Ubuntu machine to other SSH servers, and also to itself but it is not working with the public key - it always prompts for a password. verbose output from ssh client ...
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29 views

Remote Desktop over WAN

I've got a Ubuntu server and an Ubuntu desktop, with about 4-40ms of latency (they are in 2 different buildings, connected via a fiber ring) between them. Both are running 14.04.3, of the respective ...
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29 views

Seek and destroy a hanging ssh/sftp session

I am using thunar to access files on a remote PC. However, sometimes the ssh session hangs, and I have to terminate thunar. Then when I try to log back in, thunar just hangs. The only solution I've ...
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57 views

audio through ssh/get raw audio from pulseaudio

How to carry audio over SSH? was closed with a reference to pulsaudio, which is not what i am asking. How do I tunnel sound through ssh? I distinctly want a solution using ssh which would work on a ...
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73 views

Unable to fix unmet dependencies ubuntu server

i am not able to install some packages, i got this error, i already tried all clean and -f options with apt-get. also tried this Unable to fix unmet dependencies but it did not work for me. Running ...
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97 views

midnight commander freezes on remote file copy over fish/ssh protocol

I'm using midnight commander (mc), version 4.8.1 shipped with Ubuntu. when I try to copy a file from remote ssh server over the fish/ssh protocol, mc freezes at 0%, and I had to terminate it. I tried ...
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62 views

juju openstack juju-bootstrap not working properly

I have configured juju with local and openstack. I followed the following link: http://blog.felipe-alfaro.com/2014/04/29/bootstraping-juju-on-top-of-an-openstack-private-cloud/ for configuring juju on ...
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85 views

Cannot connect to Ubuntu using PuTTY after switching Wi-Fi network

I have Ubuntu installed on one of my laptops with the GUI disabled. I installed openssh-server and tried accessing it from PuTTY from my Windows machine and it was working all fine. Later I had to ...
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160 views

Why isn't my keyring in Ubuntu working?

I have encrypted my id_rsa with a password. I think Ubuntu has a keyring system which prevents me from inputting password every time I have to use id_rsa, like git push. Sometimes I don't need to type ...
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300 views

Install command line nuget on Ubuntu server

This may be more appropriate for StackOverflow, but I need to be able to compile my mono application on an Ubuntu server via ssh. I would like to have nuget restore my packages. There are several ...
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Allowing sshd on local network without access to internet

I have setup sshd on my server and can access it fine from both my local network and remotely from other networks. I set up port forwarding using a different port than port 22. Port forwarding is ...
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Byobu automatically open windows on boot

I really enjoy using byobu and the launch at login feature. I'm trying to figure out the best way to have a byobu session automatically launch on system boot, with several windows running different ...
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55 views

How to create a log of an rsync transfer on the remote server?

I have a lovely functional bash script, which uses rsync to create a backup on a remote server, utilising key-based authentication. It uses a standalone rsync command, rather than having to set up ...
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29 views

Recursivly resolve aliases for tor hidden service with ssh

I run a couple of raspberry pis with hidden services on it (for remote access via SSH). I used to use a .ssh/config to get nice aliases for the hidden services. Something like: Host *.onion ...
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Override default 'HOSTALIASES' behaviour

I followed the method of creating my own custom hosts file as suggested here in this answer. It works fine. But the problem is it expects your public and private keys to be in the ~/.ssh folder with ...
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150 views

Can't SSH to EC2 instance after Ubuntu upgrade

Summary: I have Ubuntu 12.04.3 LTS server running as an AWS EC2 instance. Using do-release-upgrade, 14.04.3 is installed without any problems. But after that I can't SSH into my instance. Both my ...
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Stopped accepting connections from outside the local network

I have multiple services running on the server: https/XMPP/SSH. I have logon to the http server over the WAN once today but now nothing is able to connect. Now I'm at home and I've tested it again, ...
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ssh hangs if remote machine is switched off

I want to log the status of a particular interface in my remote machine periodically. The following code does the job. #!/bin/bash while [ "1" ] do ifconfig usb0 &>/dev/null if [ ...
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71 views

Reboot Into Command Line - SSH

I'm using Ubuntu 15.04 I am working on my machine remotely via SSH - I am trying to install some ATI drivers for my graphics card however I need to run the installation without an X server running in ...
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70 views

Wrong home dir in sftp

I set up an sftp server with openssh but when I connect to it I cannot browse my folder. The answer to pwd command is: / and to ls command is: remote readdir("/"): Permission denied [added after ...
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192 views

No GUI in Ubuntu 14.04.2 after attempting to install Ark Server

I was attempting to follow this guide on how to set up an Ark Survival Evolved Server (including the bits recommended on Steam's website). I now get a black screen with no access from the Ubuntu ...
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55 views

Lock user screen with custom full screen image and prevent unlock using ssh

I want to connect to a computer using ssh, lock the computer's screen by displaying a full screen custom text/image and prevent user from doing anything until I unlock the screen again using ssh. How ...
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93 views

Ubuntu machines cannot connect to each other on the same network

I'm having trouble with Ubuntu machines not cooperating on my home network. The network structure is VERY simple. It's simply two Ubuntu machines (one running XBMCbuntu on 14.04, the other Ubunutu ...
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353 views

why can't I ssh into my aws ec2 instance? Permission denied (publickey)

I created two ec2 instances, and was able to ssh into the first two fine. After creating the third, I get this error upon trying to ssh into any of them. This is what I'm running: ssh -v -i ...
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721 views

How to use redsocks to redirect all internet traffic to ssh tunnel?

I have an OpenWrt router with the IP of 192.168.1.1 and I wanna redirect all the internet traffic to my ssh tunnel, this is the ssh command that I use: ssh -o "ProxyCommand corkscrew 127.0.0.1 3339 ...
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Weird bug with SSH, Unison and Samba?

I am running two servers, one at home (Server 1) and one at the office (Server 2). Both of these servers run a couple of Samba share directories which are synced every 30 minutes with Unison - the ...
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ssh stopped working due to roaming

I've got an openssh sshd/client installed on my laptop, but I can't connect to any servers from this machine. whenever I try to, it just hangs like so: ...
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565 views

ssh connection to xxx closed by remote host

I have a admin server A which have root ssh trust for all other servers, and A can ssh most other servers without password, but for server B, it always says connection to B closed by remote host. ...