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

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6
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155 views

Increase connection Timeout connect to server

When i use terminal to ssh to machine A: it takes some 10 seconds and then prompts for password I am using connect to server options to use sftp to connect to machine A and it says : timed-out while ...
4
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508 views

A Linux container can use an authorized_keys file outside my home directory, but ephemeral containers based on it can't. Why?

In Ubuntu 12.10, I've created an LXC of type 'ubuntu' using the lxc-create utility. I then create ephemeral containers based on this container using the lxc-start-ephemeral utility, and I need to ...
3
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56 views

Unable to Install Openssh-Server on Ubuntu Server

I am trying to install OpenSSH-Server and receiving following error, Unpacking openssh-server (from .../openssh-server_1%3a5.9p1-5ubuntu1.7_amd64.deb) ... /var/lib/dpkg/tmp.ci/preinst: 17: exec: ...
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64 views

I locked myself out from using su or sudo. I'd like to understand what I did there

In an attempt to increase the numer of files my domino server is allowed to handle, I changed /etc/security/limits.conf, adding following lines. notes soft nofile 60000 notes hard nofile 60000 ...
3
votes
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65 views

X over SSH causes Xorg crash

'ello. So, I've a rather interesting issue. This is more of an OpenSSH issue, or so I'm led to believe. Both of these systems are running Ubuntu (one has libraries present but no Xorg instance, the ...
3
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49 views

Software GUI does not run locally but works if using SSH with X forwarding?

The software I am trying to use is QualNet EDU 7.3. The GUI executable is located at ~/Scalable/qualnet-edu/7.3/bin/QualNetGUI. My Ubuntu is 14.04 LTS, using Linux kernel 3.13.0-44-generic. If I ...
3
votes
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29 views

What are the directories and files that I should keep in sync for a cluster server

I am currently wanting to set up new clusters. Each cluster is defined by its software installed, software settings, and its home folder files. I want only the above to be cloned and not things ...
3
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161 views

SSH with PAM Google

I have a server with Google Authenticator enabled. It worked fine, and one day I tried to login, and suddenly I'm not able to. Fortunately, I do have Ajenti installed with a terminal, so it's not a ...
3
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218 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 ...
3
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6k views

Can't change ssh port (Trusty 14.04)

I've been trying to change my ssh port without success and none of the suggestions I've found did the trick for me. I'm on Trusty 14.04 at Rackspace (upgraded from Precise). This is the sequence of ...
3
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723 views

SSH update to 14.04: The disk drive for / is not ready yet or not present

I am not able to restart my Ubuntu server after upgrade from 13 to 14.04. What can I do to make things work again? I tried to upgrade my server over ssh to ubuntu 14.04. When the installation ...
3
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190 views

Display issue on remote machine using GDM X11

I am remotely logging into an Ubuntu machine through SSH(MobaXterm) using Gnome desktop remote environment from my Windows PC. I am having trouble with one of our video applications in displaying ...
3
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359 views

Very slow speed while mounting via SSHFS

My host is ubuntu 12.04. My guest is vanilla 3.0.33 kernel with custom rootfs. I have encountered the subj problem, while mounting host folder on the guest machine via sshfs. sshfs ...
3
votes
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565 views

Using gnome-keyring with svn via ssh and mysql-workbench

Problem: mysql-workbench fails to connect to the keyring to connect to mysql. I'm trying to get my svn command (which uses an svn+ssh uri) to prompt me to enter my password for my local rsa secrets. ...
3
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488 views

What do these lines in the UFW logfile mean?

These lines are repeated several times, first one at the time when remote ssh connection with the machine is lost (mac address is the address of eth used for Internet connection) Mar 24 21:20:32 ...
3
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602 views

How to prevent autossh from becoming stuck once in a while?

I am using autossh to build a reverse ssh tunnel but from time to time the tunnel stops working and I need to kill autossh and start it again. /etc/cron.d/autossh @reboot autossh -f -nNT -R ...
2
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22 views

Why does `passwd -l` (--lock) also prevent ssh key-based login?

I locked a users password with passwd --lock [userName], the man page and this answers tells me, that a locked password doesn't prevent other means of logins (e.g.: ssh key-based). Quote from man ...
2
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188 views

Can't ssh into my home PC remotely

I have a computer at home running on 14.04. I would like to be able to send jobs to that computer (I will call it server) from my laptop (running on 15.04) and share files between the two. I am able ...
2
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0answers
35 views

How to deal with mixed permissions while using rsync?

I have a directory which I wish to duplicate on a remote server using rsync. Incidentally, these files are put in the synced directory by use of a Samba share, from Windows clients. I've created a ...
2
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0answers
402 views

MAAS/VirtualBox Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed and SSH fails

Setup For testing purposes, I installed MAAS in a VirtualBox VM and I want it to PXE boot a second VM. Both VMs are connected to a VirtualBox internal network. The MAAS VM is a Ubuntu Server ...
2
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59 views

I can't create ssh chain tunnel

I have two remote Ubuntu servers - vps1 and vps2. I want to create ssh tunnel for Firefox, that runs on my PC, to connect first to vps1 and then from vps1 to vps2. This doesn't have to be implemented ...
2
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264 views

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 ...
2
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70 views

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 ...
2
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483 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 ...
2
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138 views

Host to Guest one way connection issue

I have guest run on my machine on qemu with configuration: /usr/local/kvm/bin/qemu-system-x86_64 -enable-kvm -cpu host -smp 8 -hda ${TEST_VIRT_ENV_IMAGE} -m 4096 -netdev user,id=user.0 -device ...
2
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1k views

Start vino vnc server from ssh client

First of all: I googled all day and tried several suggestions on different forums with no luck The problem: I am not able to start a vnc server on a remote machine through ssh Additional information: ...
2
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408 views

Bind keys over SSH to switch tmux tabs

I typically have 4 or 5 tmux "tabs" (aka tmux windows) open. They are created by pressing Control+B, C In many applications you can Control+Tab to switch between tabs (or internal windows, or ...
2
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225 views

unable to access to localhost remotely with ubuntu 14.04

I have an old PC that I have set up as a server. I've installed webmin and Plex Media and ssh server. The problem is that I could easily connect to these services in Windows 7 using firefox by just ...
2
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0answers
398 views

Using SFTP with SSH ForceCommand directive

I have set up an SSH server (call it group2.fqdn) with this ForceCommand directive: Match Group group1 ForceCommand ssh -t group1.fqdn Match Group="*,!local,!group2,!root" ForceCommand ...
2
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220 views

Understanding ssh - apparent IP address: dynamic vs local port forwarding

I have ddwrt on my router back home and I'm playing with ssh on my laptop from a remote location to better understand ssh. My router has port 5000 listening for incoming ssh which it port forwards to ...
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23 views

Amazon aws type keys generation

There is perfect security model when connecting to Amazon AWS instance. But I would like to be able to make such key my self for custom user. To be clear it will be user with git repository, but it ...
2
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0answers
466 views

How do I chroot an SSH user to their home directory?

I don't want to use jailkit. My OS is Ubuntu 14.04. I am setting up a user account on my server for a kid I tutor, so he can run a minecraft server. He will be using putty to ssh into my server, and I ...
2
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0answers
58 views

who / w / logname broken in multiple terminals

I have a strange problem: In a GUI session, depending on the terminal being used the following two (related) problems appear: who and w doesn't list the user's active session logname returns ...
2
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0answers
149 views

How to do port forwarding over a public network?

I am stuck in one complicated task , i am having following structure, _____________________________ | [PC1]--(in same net)--[PC2] |----(Over internet or public ...
2
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368 views

after ssh session : -bash: /bin/ls: no such file or directory

I've logged into my Ubuntu server from work via putty under Windows. Right away I noticed something weird. I could not use the ls command. Got: -bash: /bin/ls: no such file or directory I didn't pay ...
2
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0answers
132 views

How to access Amazon EC2 instance from Ubuntu 13.10?

I have an Amazon EC2 (Windows) instance which has been created for me and I have public DNS, public IP and the public key. I would like to RDP to this instance from Ubuntu 13.10. I have recently ...
2
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1k views

Ubuntu Touch ssh connection refused

running Ubuntu Touch on a Nexus 4. I've installed ssh server and have followed the instructions available in the wiki to ssh into the phone, but it tells me connection is refused. Doing the standard ...
2
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0answers
393 views

Samba, PAM and encrypted home directory

So, I have an encrypted home, PAM usually unwraps the passphrase via /etc/pam.d/common-auth and /etc/pam.d/common-session-noninteractive. This works fine for SSHD sessions, however when I open up a ...
2
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0answers
627 views

ssh-agent running but not working when logged in using PuTTY

When I am using the terminal directly on the machine running Ubuntu 13.04 ssh-add works fine using the process: /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session /usr/bin/im-launch ...
2
votes
0answers
431 views

Server in LAN with two network cards, can't telnet / ping to the second even if it works

I have an issue with an Ubuntu 12.04 LTS (updated) server. For reasons too long to detail, it has got one eth0 interface assigned to 192.168.1.9 and one wlan0 interface assigned to 192.168.1.10. Both ...
2
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0answers
122 views

How to administer, manage & update 40 to 50 Kubuntu laptops?

I have a custom developed application presently running on about 40 Kubuntu laptops (& more planned). Every few months I have to update the application. I also have to run Ubuntu updates and a few ...
2
votes
0answers
210 views

How can I let somone over ssh have access to pulseaudio?

I recently had a really good post here where I was able to figure out how to setup virtualgl and use it with X11 forwarding in ssh. I am using it to make a kind of multiseat setup. I only have one ...
2
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0answers
117 views

who is scping your ssh server

Just you can run w to find who is sshing into your server, how can you find out who is scping into an Ubuntu laptop?
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0answers
376 views

Problem with applying socks proxy systemwide

i trying tunnel my traffic through SSH server. when i use Firefox network setting, it work well but when i try apply the socks proxy system wide from ubuntu setting and tunnel google-chrome traffic, ...
2
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0answers
81 views

Suspending the current ssh connection

I'm new to Ubuntu and trying to learn ssh connections. I learned trick to suspend the current SSH connection and come back to localhost using: ~ + Ctrl-Z When I press Shift+~, I suppose that the ~ ...
2
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542 views

SSH Connection time out

Whenever I try to SSH my VPS account it says: SSH connection time out during banner exchange. I want to know the reason behind this problem and a solution. My VPS is running Ubuntu 12.04 Server ...
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19 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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43 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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0answers
47 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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25 views

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 ...