SSH (Secure SHell) is a protocol for running commands on a remote computer.

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718 views

SSH via cert-authority

I'm trying to use SSH using signed certificates. I'm using ssh -i keys/client.key to connect to the target device. If I generate a public key from that private key (with ssh-keygen -y -f keys/client....
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415 views

ssh not using ~/.ssh/config, even after I play around with permissions

I tried modifying my ~/.ssh/config file to allow automatic fast X forwarding as per this site http://xmodulo.com/how-to-speed-up-x11-forwarding-in-ssh.html I then tried logging into a server and ...
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436 views

Why does having cron run a remote command over ssh on a Cisco router get interrupted?

I have been tasked with making sure that if a particular server at work dies, we know about it right away. Because I'm not there (no one is really), I have written a script to run on my home router ...
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94 views

Mosh and terminal multiplexing

Reading this Q&A on the site: Can I re-attach to a mosh session? made me wonder about the use cases for mosh. Say I start tmux on my local client, and then mosh to a remote host from within tmux....
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1answer
279 views

How to disable GUI for password promt in Gnome

I moved from Xubuntu to Debian and copied id_rsa and id_rsa.pub to ./ssh/ I use a passphrase protected certificate to log in to a remote server. My passphrase contains arrows. Somethin like "Mike" ...
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1answer
157 views

How does 'ssh-copy-id' work under the hood?

What does the program ssh-copy-id actually do under the hood? Can the steps be explained as if to a child with a good understanding of computer science? Does it use protocols already existing in the ...
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297 views

SSHD_CONFIG keeps corrupting on reverse SSH setup

I have a reverse SSH setup to traverse an impenetrable CGN NAT. It works well, but the SSHD daemon on the client behind the NAT keeps dieing for unknown reasons (fails to start-up). The client ...
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18 views

SFTP/SCP only and chroot [duplicate]

We have a SFTP Server and a bunch of users. The users share files over the SFTP Server with us (not the best solution, I know). Every user is chrooted into a different directory to prevent them from ...
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285 views

Streaming Qt over ssh

I am trying to stream a program over ssh and it doesn't work. It is written in qml and I've already compiled it, but qmlscene doesn't work either (doesn't matter what file). The error I'm getting is ...
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1answer
243 views

Dynamic ~/.ssh/config

I'd like make my ~/.ssh/config file dynamically generated by a shell script (or anything else that prints to STDOUT). Is there a UNIX trick to make reading a file result in executing a command & ...
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1answer
281 views

Is there a way to specify the list of private keys to add to ssh-agent?

After a few hours of digging, I finally found out why my computer stopped asking me for my key(s) using gnome ssh-askpass. It was very simple, but took me forever to figure out because... well... most ...
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553 views

GLX extension missing on display “localhost:10.0”

I have installed scilab 5.5.1 on rocks based cluster(with GPU card & nvidia driver installed), and i am able to successfully use scilab on the same . Issue arises when i need to use scilab from a ...
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2answers
668 views

Fake IP addresses generator

I have an application running on a server that adds a new iptable rule blocking every IP address trying to connect via SSH with a wrong password. Now, I'd like to perform a stress test where many (...
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1answer
176 views

Copy directory with SCP

I'm trying to copy directory from local drive to remote server with -r parameter, however I'm getting: scp: System error: 1633648 (Failed to retrieve error string (err:317)) This is the syntax I ...
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1answer
41 views

Remotely use SSH key authentication (3

I have a VM using ubuntu 14.04. running on a windows. If I use the terminal on the VM desktop, I can connect to my servers without passwords using registered SSH Keys. When I connect to the VM from ...
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1answer
84 views

Updating a bunch of Macs via SSH. Could use some help

all. I'm working on a script that'll be running from our Mac server, and it will (hopefully) update all of our Macs via Munki (repo is on the same server) and the built-in softwareupdate command. ...
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287 views

ssh with rsa key asks for password

I have a server with Ubuntu 14.04 x64 operation system. Part of my sshd_config file (entire file): Port 2202 Protocol 2 PermitRootLogin without-password StrictModes yes RSAAuthentication yes ...
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1answer
10k views

SSH tunneling fails with “administratively prohibited: open failed” [duplicate]

I am trying to connect to internet via a server in local network. I don't have permissions to change server configuration. I want to do a ssh tunnel to that server and via that using socks proxy, I ...
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559 views

How to add PuTTY private key to OpenSSH client

I am trying to setup scp on a new Ubuntu 14.04 system. This system will act as an SSH client to an already configured SSH server on another Ubuntu 14.04 system. I can use putty to SSH into the ...
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4answers
695 views

Interactive ssh works, but not rsync or scp, on OSX

The motivation is that there's a server that I can ssh into (with or without key pairs set up ... i.e., without or with a password) but that I cannot send files to via rsync, scp, or sftp. Someone ...
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81 views

Giving a user SFTP access only with access to subdirectory outside of home?

I have user [USER A] account which contains scripts and a downloads folder. I would like to create a new account [USER B] so that the user has read/write (SFTP and not full SSH) access to their home ...
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196 views

SSH broken when connected to VPN upon upgrading from Ubuntu 13.04 to 14.04

I need to SSH into a server which is only accessible when I am connected to a VPN (PPTP). Using my Ubuntu 13.03 virtual machine, this works perfectly. First I connect to the VPN, then I ssh into the ...
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90 views

Is it possible to make a symbolic link of a file in other machine?

I have a account in a server and I would like have a symbolic link of some files in my local machine. How can I do this?
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68 views

Is it safe to disable password for a user, if it only uses SSH key login?

We want to remove the password usage on a UNIX system. The users should only log in with SSH key. Not password. So their password field in the /etc/shadow file will be "*" and set their password to ...
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1answer
645 views

libvirt-bin error on a VM when I try to list VM

I'm using Virtualbox 4.3.18 on my Arch Linux Host machine and libvirt-bin 1.2.9 on my Ubuntu Server Cloud guest machine. Everytime I try to follow this tutorial I receive the following error when I ...
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33 views

How can I get console ssh to NOT ask for my private key password every time? [duplicate]

I have a program required by work installed on a Debian Wheezy box. Previously I was using Mac OS X (switch details irrelevant). I have an SSH keypair at ~/.ssh/id_rsa{.pub}. That keypair has a ...
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1answer
143 views

How to do version-control repository update in crontab?

I'm trying to automate version-control repository update in crontab. The following script /home/usr/mrbean/bin/update.sh works in interactive Bash command-line: #!/bin/bash ROOTPATH="/home/user/...
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1answer
93 views

help organizing ssh aliases

My .ssh/config is starting to grow with aliases, and remembering them all is getting harder. Do you have any tips for better manage this growing collection? For example an autocomplete when I type ...
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8 views

How to SFTP through proxy if there is no netcat? [duplicate]

sftp -v -oProxyCommand="nc -v PROXY_IP_HERE PROXY_PORT_HERE %h %p" user@remote_sftp_server.com 22 How can I do this if I don't have netcat installed? I don't have permission to install it, even in ...
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407 views

Cannot SSH after switching to Netgear router

I have Comcast Xfinity internet. When I was sent their Wifi router/Cable modem combo box, I was able to use SSH perfectly. However, since the Wifi from the box was weak, I decided to buy my own router:...
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1k views

Load a background image or set the background color if Konsole/Shell is running SSH

I want to set my laptop to load an image in the shell's background or set the background color to red if I'm connected via SSH. How can this be done? With a bash function in .bashrc? I have: Set the ...
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215 views

xvfb-run aborting on cluster

I'm trying to run a python script with xvfb-run on a cluster using SLURM; when I use an interactive session (srun) it works fine, but when submitting to a queue (sbatch) it aborts/fails without much ...
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58 views

sshd suddenly wants a passphrase from Linux box, but not from windows (putty) [closed]

My Amazon EC2 instance running Ubuntu is no longer letting me ssh in via my local Linux system. I haven't changed a darned thing on either side but now it wants a passphrase and says nope when I ...
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1answer
988 views

Terminal colors putty raspbian

I'm connecting to my Raspberry Pi from my Windows Machine using putty. I already adjusted the colors for bold blue in putty to be more readable (using this guide). But I still have problems with the ...
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647 views

How to setup ssh over USB on an embedded linux device?

I have an embedded linux device with an ARM processor. I am connecting to it over a USB port using minicom. What should I do to "ssh" into the device through the USB connection? I want to setup ...
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2answers
426 views

SSH key authentication works with /usr/sbin/ssh -d, does not with the daemon?

CentOS x64 6.5: if I connect as root to my server and do the following: service sshd stop /usr/sbin/ssh -d I'll able to connect as user using public key authentication from my development machine: ...
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1answer
135 views

How to ssh with private key from other linux system?

I log in to my server (server1) with user, password and private key: key.ppk. I want to ssh from server2 to server1. So I do the following: ssh -i /srv/key.ppk root@XX.XX.XXX.XXX When XX.XX.XXX....
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372 views

ssh from an unix server to a windows server (running Sysax) fails [closed]

We are doing a sFTP from an Unix server to a Windows server and also a ssh, from the Unix server to the Windows server, to execute a file present on the Windows server. These 2 steps worked well. Now,...
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1answer
1k views

DROP all for port 22 if not geoip set of US for iptables and xtables

I want to simply block all ssh access from anywhere but with in the US. This is my whole iptables, and I have followed http://www.howtoforge.com/xtables-addons-on-centos-6-and-iptables-geoip-...
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131 views

xtightvnc through ssh gateway — connection refused

Following setup: homepc -> gateway -> workpc workpc:~$ tightvncserver :12 homepc:~$ ssh -N gatewayuser@gateway -L 1212:workpc:5912 Now I try to connect via homepc:~$ xtightvncviewer localhost:...
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1answer
177 views

Using a laptop as a bridge between Internet and LAN for SSH connections.

We have a lan and a server running HPUX that isn't connected to the Internet. I have a server and a laptop on the same network. When I plug in the laptop via ethernet cable, its Internet connection ...
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2answers
300 views

Can't start presentation on remote computer console session from an SSH session

Basically I am executing this script remotely via an SSH session. It works fine on Linux Mint, but not on Debian (7.5). It looks like the export display or nohup command isn't working, but I'm not ...
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1answer
356 views

What's a good way to debug issues with X forwarding over ssh where just some applications won't run?

As far as I understand it, X forwarding is usually pretty simple. Once I can run some things like xeyes or gimp over ssh, complex applications like firefox/iceweasel should also be able to run. ...
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269 views

Mount via SSHFS in NFS filesystem

As a student I have access to a cluster of teaching lab computers, at each of the machines all the home folders (including my) are mounted via NFS. I also have a desktop PC. I want to mount my home ...
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291 views

ssh-agent on CentOS 6.5 keeps “disabling” itself

I recently installed git on my CentOS 6.5 system. During the process I setup a key/pair for GitHub so I don't have to enter a password for every git process. I did this by adding the rsa file to ssh-...
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1k views

ssh script asks for password

a little ssh issue here. I set up some keys in ssh between 2 machines and I can login via ssh without password in terminal. I am trying to write a shell script that sends commands to the remote ...
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1answer
358 views

X11 forwarding over ssh

I used to log into a remote server on our corporate network using Xephyr and ssh using the following command Xephyr :0 -ac -br -screen 950x540 | xterm -bg black -fg white -display :0 -e ssh -Yf ...
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2answers
384 views

How to fix 'set -o emacs' in .bashrc not working in ssh shell

I work in an LDAP-based user and host network. My user exists on all hosts since it an LDAP user, and my user's home directory exists on all hosts as a mountpoint. I have ~/.bash_profile set up to ...
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148 views

ssh-copy-id hangs with 8192-bit key

Having a bit of an issue with ssh-copy-id it seems to hang when i try to copy 8192-bit rsa keys accross to an OpenIndiana server. I running OS X as my client OS. Is anyone aware of issues with keys of ...
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54 views

libpam load pam modules at every connection

I want to reduce ssh connection time, by debugging sshd have found that libpam is loading all pam modules specified in /etc/pam.d/sshd file at every connection. How to configure/modifiy libpam such ...