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

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'ssh -x -a -oClearAllForwardings=yes' running on my machine

I have a process with the following name: ssh -x -a -oClearAllForwardings=yes -2 user@host -s sftp running on my machine, not for the first time, and I don't remember running such (I have obscured ...
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21 views

ssh connection, using my private key from windows into ubuntu

I'm using ssh connection on windows. I want to use the same connection on ubuntu, so I copied my private key and I pasted it into /root/.ssh But when I'm doing ssh user@server with the terminal, I'm ...
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13 views

remote install ubuntu server back to start?

I got a Ubuntu server where i have root access, i do not have access to it physically. There was a lot of random stuff on it when i got it. How can i install it back to clean, as it was in the ...
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1answer
39 views

SSH behind a NAT enabled router

I have a netgear router, and i installed openssh, now when i try ssh deadman@192.168.0.4 My ssh works fine and i am able to enter to the ssh terminal But when i try it with a remote terminal like ...
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1answer
58 views

SSH Login Display

So I enabled the banner which displays a nice ascii art text for me. Once I enter my password, some system stats come up, my last login info, and this is where the server tells me if there are ...
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1answer
73 views

I'm trying to run an executable file via ssh but its saying “no such file or directory”

I'm trying to run an executable file via ssh. its saying "no such file or directory" but the file exists. What i'm doing wrong? Sorry, i'm a noob with linux root@v-8966:/home/talisman/db# ls -l ...
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78 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 ...
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73 views

pam_systemd delays SSH login - required?

On our Saucy servers (13.10) we are seeing long delays when logging into the systems via SSH. I figured out it is related to the line session optional pam_systemd.so in ...
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3answers
82 views

Error message; [IP]in-addr.arpa has no PTR record: [duplicate]

I'm trying to figure out how to find the hostnames of computers on the LAN network. I put in the known address of a computer, but I'm getting an error I don't understand. ...
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1answer
32 views

Host to Host SSH Tunnel

I want to create a full SSH tunnel between two Ubuntu 12.04 servers, (I found out about SSHuttle but because of a bug in the handling of file descriptors it will crash under high load) very much like ...
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1answer
723 views

How did this exploit allow write access to root owned files?

For a computer security assignment at my university I need to find and understand an exploit that works on ubuntu 10.04. I have already found and tested one on an Ubuntu 10.04 machine (that I own) ...
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35 views

404 on apt-get update [duplicate]

I just did an sudo apt-get update on my Ubuntu 12.04. I wonder how to address the following 404 errors? I am using only PuTTy to connect to my VPS Err http://ppa.launchpad.net precise/main Sources ...
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1answer
116 views

How do I set up a local SOCKS proxy that tunnels traffic through SSH?

Assume I have access to an SSH server that supports tunneling, and I am on a PC that is running *ubuntu, how do I set up a local SOCKS proxy that tunnels the traffic through that SSH server before ...
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0answers
8 views

How to connect to an ssh server in order to access files on a LAN PC? [duplicate]

In Trusty (14.04), Nautilus (1:3.10.1-0ubuntu9) no longer gives option in ‘Connect to server’ to specify type e.g. ssh & user/password. What is the workaround, without using the CLI, to connect to ...
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2answers
7k views

How to enable root access on Ubuntu 14.04

i´d like to enable the ssh root access on Ubuntu 14.04. Editing the /etc/ssh_config (PermitRootLogin yes) didn´t affect anything
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38 views

Xephyr on Ubuntu 14.04 via SSH is buggy?

I tried Xephyr on Ubuntu 12.04.4 via SSH(putty+Xming) X-forwarding running WM(fluxbox, XFCE4), which runs well. However, with Ubuntu 14.04 (server), Xephyr got "Caught signal 11" and quit on the test ...
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2answers
60 views

install ubuntu in a virtualbox vm on ubuntu host through cli (ssh) only?

I just installed a new remote server with ubuntu 14.04, added an SSH server so I can control the server remotely through SSH. No GUI involved. Well, the server has a GUI, but I have no physical access ...
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1answer
51 views

ssh server: allow only login with key

I know, this question has been ask several times. But Im trying to setup a ssh server. I thought the critical setting is that I have to set PasswordAuthentication no. But I already did so and ...
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2answers
78 views

Will an upgrade of Ubuntu to a new LTS change SSH host key

I have recently upgraded my computer from ubuntu 12.04 to 14.04 LTS (in one step). After the upgrade, however, I got well-known warnings like ...
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0answers
98 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 ...
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1answer
43 views

terminal user and guest account logged into gui interacting with each other

What we have: I want to connect to a remote linux box via ssh with an account with superuser privileges. This linux machine has one current logged in user who is using a GUI on a guest account. ...
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1answer
52 views

Can SSH with IP but not host name?

When I SSH directly to the server's IP address, it works. (ssh michael@10.1.10.129) For reference, here is the resulting prompt: michael@noranetserver:~$ However ssh-ing by name doesn't work like ...
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42 views

Access ubuntu server over VPN

I have remote server(ubuntu server). I access remote server by ssh as ssh root@IP_OF_SERVER, then I have setup a webapp running in server and access it by IP_OF_SERVER:80. Every thing is working fine. ...
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1answer
48 views

Permission denied to to transfer files from remote server

Dear ubuntu community when i Copy the file from remote server (After login in to server from my Home computer) using scp commands as follows scp -v CNTPEPRSOLIONSfullcputest.log root@127.0.0.1:~/ ...
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151 views

bash: /home/user/.ssh/authorized_keys: No such file or directory

Create a ssh key: Command: ssh-keygen -t rsa –P "" Moving the key to authorized key: Command: cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys bash: /home/user/.ssh/authorized_keys: ...
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1answer
62 views

SSH a computer SSHing my server?

I'm very new to SSH, and what all you can do with it and I recently began to wonder how I would go about SSHing into a computer that's SSHing my server, through my server. I know I can SSH a computer ...
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41 views

User has no permissions in sftp

I installed LAMP in my Digital Ocean droplet. I have successfully logged in to SFTP. However, when I try to do anything in my /var/www/html/ folder it says permission denied. It may be worth ...
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26 views

How to setup an ubuntu VM running in windows azure to be connected to via ssh from 2 or more computers

I have an ubuntu VM hosted on Azure. When creating the VM, I was prompted to add a pem ssh key for authentication when I want to ssh to the VM. However, How do I set up this VM so that my other ...
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1answer
31 views

ssh authorized_keys : Configuring single public key for multipl hosts

How to use single public key for multiple hosts do i need to duplicate the entries in authorized_keys? or is there a way to do it as single configuration? For example: Key user@host1 user@host2 ...
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11 views

How to find the most requested page on a server?

I have an Ubuntu 12.04 server with apache2 that I am hosting 10 different sites on. Is there a ssh command or some way to find the most requested page on the server?
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1answer
160 views

How to convert rsa key to pem using X.509 standard

I've converted an rsa key to pem using the following command openssl rsa -in ~/.ssh/id_rsa -outform pem > id_rsa.pem However when I try uploading this key to my ubuntu server hosted on Azure I ...
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4answers
55 views

Protection For rm

I sometimes work with my server over ssh. I don't want to lose anything because of an accidental rm. Is there a way of creating a trashbin for my server? I know it sounds stupid, but I just want to ...
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1answer
169 views

Openssh-server error E: Sub-process /usr/bin/dpkg returned an error code (1)

trying to install openssh-server on my system i got this following errors: root@user-desktop:/home/user# sudo apt-get install openssh-server Reading package lists... Done Building dependency tree ...
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237 views

Not pinging with host-name and can't ssh using hostname [duplicate]

I have setuped a DNS server in Centos6.5 and its working with every client machines other than ubuntu, now i have issue with ubuntu While im trying to ping from desktop machine to DNS server as ping ...
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84 views

Could not connect to server - FileZilla over SFTP

I have Ubuntu 12.04 Server installed and also FileZilla in it. I can SSH and PING into my server but I cannot SSH using FileZilla Could not connect to server I have seen this post but there is ...
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3answers
1k views

Is someone trying to hack into my server? What can I do?

A few weeks ago I posted a question here about some ssh issues I was having with an Ubuntu 12.04 box. Fast forward to today and I am trying to allow someone else access to the machine, but they keep ...
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1answer
54 views

How to generate a strong key for SSH encryption?

I recently setup my first Ubuntu server, it's 14.04, and I'm trying to secure SSH. I've googled around for numerous guides and there are many good ones that go into great detail about how to setup a ...
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1answer
60 views

How to retain date stamp while copying to another PC

Similarly to How to maintain a file's 'last modified' date ? I need to retain the date while copying the file by Krusader or in a 'Home Folder' window to another PC connected by SSH. Is it ...
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2answers
38 views

Can I block root ssh access from external notwork, but not from the local LAN

OS: Ubuntu 14.04 I would like to root login from ssh locally, because backuppc needs that. I would like to block an external access with root login. Thanks
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1answer
141 views

Deluge headless not working at all

So i've created a home ubuntu server. Installed Ubuntu server 14.04 Selected install samba, mysql, lamp server, openssh server Now I am able to get onto the machine via SSH. *note: have not set a ...
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1answer
57 views

Detecting 404 Somehow

I keep my PC running at home. Sometimes, when I'm at work, my PC can't load the pages that I want to load. I have to ssh to it, and reboot/restart browser. It's really annoying and I'm trying to find ...
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1answer
34 views

take changes in file sshd_config file without server reboot

I change configuration in file /etc/ssh/sshd_config but got effect only after reboot server. How to take changes without rebooting server?
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2answers
38 views

How to restrict account access temporarily ubuntu

I need to temporarily lock accounts for couple of users on my Ubuntu server. What would be the best way to do this? Reason for doing this is a maintenance. However for some users the accounts need to ...
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1answer
48 views

ssh to Ubuntu Server hangs after 30 seconds of inactivity

Lets say I ssh to my 13.04 server from my Linux box and then vim file and do some text editing. If I pause for 30-60 seconds, considering what to type, then the terminal will hang. The cursor box ...
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2answers
264 views

Using mv & cp on a headless server (SSH timeout interferring?)

I've recently set up a headless server to back up a number of very large film & editing files. I SSH into the server and - following some best practice guides I found around - I've tightened ...
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16 views

Is it necessary to call `ssh-add` after login [duplicate]

I have my public key on the server, I have my personal key in ~/.ssh/identity. If I execute ssh-add and enter my private passphrase, I can ssh without a password. What I want is not to call ssh-add ...
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1answer
51 views

Is there any way to echo an ssh session to a local terminal session

I am starting a server via ssh from various locations, and i want the terminal printout to be able to be viewed locally on the server, is there any way to do this?
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13 views

sftp restriction and ssh problem

I configured a folder to be restricted to the individual user. sudo nano /etc/ssh/sshd_config Subsystem sftp /usr/lib/openssh/sftp-server Subsystem sftp internal-sftp Match Group s-user ...
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1answer
30 views

Is there any way to give a tag or nickname to a process so it can be killed invoking kill <tag>?

I have one Ubuntu 12.04 vps and I use git to upload code for a web server, when I push by git to vps I have to login via ssh to vps and look for the process by: ps -A | grep node I kill it once I ...
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2answers
597 views

no tty present and no askpass program specified with `ssh -A`

I'm trying the following command: ssh -A user@server 'bash -s' < mylocalscript.sh But get the annoying sudo: no tty present and no askpass program specified when the script reaches a sudo. ...