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

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Changing ssh ciphers on EC2 ubuntu

I'm running ubuntu on an Amazon EC2 server - I need to lock down the ssh ciphers for pci compliance. I have tried editing the /etc/ssh/sshd_config, with these lines: Ciphers aes256-ctr,aes192-ctr,...
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Connecting to a server via the command line

Newbie networking question here... So, I have followed some instructions from my university to connect to my personal space on the university network. The instructions are to open Nautilus, then ...
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Does ssh service stop on reboot?

When I reboot a VM (Ubuntu 16.04) of mine, I'm no longer able to ssh to it. From what I understand, 'apt-get install openssh' gives you sshservice on startup by default so I'm guessing this isn't the ...
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how to ssh to hostname without giving fqdn

currently i am working on lots of server which are having very lengthy fqdn. example prodService.xyz.pdr.abc.com and i want to do ssh to server like below without giving fqdn ,it should take fqdn from ...
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error while using enable-secure-admin

I'm trying to install glassfish on a server (I also installed Java) but I got this error: Remote server does not listen for requests on [localhost:4848]. Is the server up? No such local command: ...
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Dropbear: Can't use regular passwords to login

I'm using dropbear to unlock my lvm/luks partition on a remote server during system boot. I've added dropbear to initramfs and I can connect and authenticate using public keys. But unfortunately, ...
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gcloud usage 101 for ssh

How do I install and use gcloud? In the context of: Connecting to Linux Instances This guide shows you how to connect to Linux instances using common SSH tools on Linux, OSX, and Windows ...
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sshd: segfault at 8 ip error 4 in libc-2.19.so on ubuntu 14.04

I'm using Ubuntu 14.04 and yesterday I was setup the reinstall openssh-server and setup goeip which allow/deny ssh access country wise. In /var/log/message , Continuously getting below error: $ tail ...
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X11 errors over SSH

i get following errors when trying to open programs over ssh. $ thunar Thunar: Cannot open display: $ libreoffice Failed to open display $ firefox Error: GDK_BACKEND does not match available ...
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Git SSH not working in SSH session

First of all, I am not entirely sure if this is a problem with Ubuntu itself, but any insight would be helpful. I use Ubuntu 14.04. I have a git repo cloned over SSH, and normally I have no problems ...
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spawn command not found on ubuntu 14.04

I'm using Ubuntu 14.04 and I want to block SSH login country wise using GeoIP ( From https://www.axllent.org/docs/view/ssh-geoip/), Please find output of command: $ spawn spawn: command not found ...
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Purpose of email at the end of SSH public key

I was adding one of my public keys to the authorized_keys on one of my servers when I realized that at the end of my public SSH key there is my email: $ cat .ssh/id_rsa.pub ssh-rsa AAAA[...lots of ...
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Asking remotely a computer to wake another via WOL [on hold]

I understand Wake-on-LAN cannot work if you're trying to wake a computer from outside the network, however, on a very far observatory, there's this server running on Ubuntu 10.10 shutting off ...
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Can't copy ssh from Ubuntu server to Rpi

I have a digitalocean server that i watn to use to orchestrate a couple of RPies with Ansible. I have created the key pair and i'm trying to ssh-copy-id pi@#####... but all i get is this: /usr/bin/...
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Communication between Host and Server with completely different sshmac/sshcipher

I have a little bit idea about sshcipher and sshmac. Recently i got to know that to change sshmac and sshcipher , we need to update sshd_config with required cipher/mac. Now the question here is : ...
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25 views

Why ping and ssh resolves different Ip?

Honestly I have no idea what happened but ping not connecting to the right ip address so can't login with ssh. Say my server ip address is 136.17.90.160, but when local when ping... (venv) simon@...
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Ubuntu 14.04 - need ssh access on Ethernet to execute the commands and wifi access to send data

Ubuntu system has two interfaces - ETh0 & wlan0 ETh0 is conected to local test network through switch wifi is conected to Access point Eth0 got ip 172.18.201.100 wlan0 got ip 172.18.202.87 ...
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How I can copy a src code from my computer to the remote computer

I am beginner in linux and I don't know many details about it. I am trying to copy a folder from my computer to remote computer to install it in the remote computer and work with it. how I can do that....
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PHP script wait on ssh input

I'm not sure if this is an ubuntu question or a php question, but: I am trying to run a script via ssh on a remote server, and I want my php script to continue running only when it receives a signal ...
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Could not connect to display tower:10.0

Got a tower with /etc/ssh/sshd_config like following: X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost no when I connect to it with ssh with my laptop with following .ssh/config file Host=* ...
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Comment, Uncomment, change setting based on string, add line from terminal

I have to edit some files to uncomment a line, change a value on that line or uncomment a line. I am trying to do this through a bash script. I am trying to edit /etc/ssh/sshd_config and change ...
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Ubuntu Server - After reboot key always refused, until login

I installed Ubuntu Server and also configured the ssh server. I tried the "key system", so I have a public key in ~/.ssh/authorized_keys, and also configured this file in /etc/ssh/sshd_config. When I ...
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directing ssh to use wireless instead of wired network

I have both wired and wireless network on my laptop. I want to ssh a server that is accessible over the wireless network only. How can I direct ssh to use WiFi for connection to server without having ...
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/etc/sudoers file corrupted and I can't run 'pkexec visudo' over SSH

Following the instruction here I get: pkexec visudo ==== AUTHENTICATING FOR org.freedesktop.policykit.exec === Authentication is needed to run `/usr/sbin/visudo' as the super user Authenticating as: ...
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Not able to access MySQL, not via Virtualmin or SSH. Tried everything

Using Ubuntu on 14.04. I installed Virtualmin and it says ''MySQL does not appear to be installed and running on your system, or has not yet been set up properly in Webmin's MySQL Database module. If ...
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What's wrong with my autossh tunnel?

This is my synergy tunnel between my desktop and my laptop. Both are Ubuntu 14.04 LTS. Note that localhost is the desktop. This works: ssh -N -f -L 24800:localhost:24800 laptop This doesn't (I ...
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is there a different way to mount drives over ssh then when using putty?

I have an Ubuntu 14.04 machine that i use as a fileserver and i have installed Ubuntu 14.04 on my laptop as the only OS. lately i have been having issues where the mounted drive on my server seems to ...
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avahi local domain not working in ubuntu mate 16.04

I used to use ssh with hostname.local but now it has stopped working. Is this a problem with all ubuntu installation or just mine? avahi-browse -all displays no output
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Problems with SSH Proxycommand

i have some problems with the ssh proxycommand. The authentication on the proxy works fine, but when i want to login to the remote-host it fails. The problem seems to be, that the proxy tries to login ...
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Startup application does not work on remote login [duplicate]

I have a machine running Ubuntu 14.04. I want to run a script on login, and I have added this script in the Startup Applications program. This works fine when I login from the same system, but when I ...
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Can't ssh nor ping into and out of the system but internet is working

I'm new to Ubuntu. I just got a Odroid-C2 and I plan to use it as a Node.js server. I'm using the official Hardkernel Ubuntu Mate Image (should be version 16 or 14.x), and I need SSH Access to it. Not ...
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Problem loading upwork team app [on hold]

Unable to open upwork team ap [0714/013034:ERROR:browser_main_loop.cc(173)] Running without the SUID sandbox! See https://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment for more ...
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Problems with ssh

I have two VMs running Ubuntu server 16.04 on the same host machine, let us call them A and B. They have different MAC addresses, which are both allowed on the network and can both access the ...
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Git clone/push/pull through SSH freezes [closed]

Normally I use git with online repositories like github and gitlab through SSH using my rsa key to authenticate. I think that, 2/3 of the times I try to do clone/push/pull, git freezes. If I raise ...
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how to access the putty to ubuntu server

I am new to Ubuntu, I have it installed on my computer and I am trying to connect to my Ubuntu machine remotely through PuTTY. I am getting the IP address of the Ubuntu machine using ifconfig. I'm ...
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How to auto-login on Ubuntu 16.04 Server?

I have a server computer running Ubuntu 16.04 Server, and it is running headless, so it is rather frustrating to restart the computer and have to login before I am able to SSH into the server. I've ...
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Need assistance on understanding debugging MPICH executing on cluster

I am running into a few issues with the SSH and MPICH executing. From some previous questions that I asked, I was able to progress to a point where I executed the mpi_hello.c program. For reference, ...
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Cannot ping myself (127.0.0.1) or ping outside or ssh into my ubuntu 12.04 server

My server was working fine a few days ago. I was able to SSH in. Today all of a sudden I can't SSH in, but I'm able to access the console directly in order to troubleshoot the issue. I tried ...
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SSH : Could not resolve hostname 192.168.40.250:2080, Name or service not known

I just installed a centOS 6.5 web server on a VMWare. Now I' like to access it from my physical computer in order to use the LAMP stack i installed on it to host a web application am developping. But ...
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Getting “Too many authentication failures” from every ssh server I've been using

About two weeks ago one of the servers at my workplace started giving me this error and then another one. Now even my local server (on my home network) gives me this error too. What does this mean? I ...
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need help with ufw

I am setting up ufw using ansible on a remote ubuntu server. I am initially setting up ufw with ufw enable policy allow to enable ssh access. After that I'm doing ufw allow from x.x.x.x to any port 22 ...
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SSH into Virtual Private Server connected to VPN

I have a VPS with Digital Ocean as well as a VPN account with Private Internet Access. I would like to be able to connect my server to a VPN in say, Switzerland, and still be able to SSH into it. My ...
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How to ssh into a remote server which has a shared IPv4 (NAT)

Im running Ubuntu 16.04 LTS and I have tried using the information given on #man ssh But I am a little confused and I tried many times and got this message ssh: Could not resolve hostname w-: Name ...
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76 views

vagrant up throws The following SSH command responded with a non-zero exit status error for Laravel Homestead

I'm trying to install Laravel Homestead on my Ubuntu 16.04. But I get this error when I want to run command "vagrant up": milad@miladlenovo:~/Homestead$ vagrant up Bringing machine 'default' up with '...
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ssh: connection to host <IPaddress> port 22: connection timed out

I'm receiving the same error message when trying to connect Computer A, which is running Ubuntu, to Computer B, which is running Windows 10 with Cygwin and OpenSSH installed. When using the command ...
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SSH Authentication Problem

i'm currently trying to setup a few virtualboxes (ubuntu 15.10) to simulat a network i'm developing some software for. For this i need to setup a SSH connection, this is working, but i can login ...
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Cannot connect to server through hostname, but can connect to another PC through hostname

I'm running a Windows 7 PC, which I connect to two Linux PCs using GitHub's SSH client. One of the remote PCs runs Linux Mint 17.3, the other which I can't connect to with hostname runs Ubuntu Server ...
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Restrict SSH remote access to users home directory chroot

I am hosting a server, now is there a customer who needs SSH access to his home dir. /home/csgorental1 i can give him access to SSH but then he is able to see certain files on the server i don't want ...
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270 views

How do I change ssh settings of a live connection?

I have been watching this amazing video The Black Magic Of SSH / SSH Can Do That?, and the presenter talks about a method to change ssh settings of a live connection through the ssh console without ...
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Chroot into /var/www/ for sftp-only users

The setup i want: Sftp-only user has his own folder in /var/www/ where he can upload his own files but can't look into folders of other users. The best way would be if he is directly in his own ...