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

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1answer
2k views

Does Public and Private key remain the same for a user or system?

I had requested access to a git repository and it was granted after I gave my public and private keys. ( generated using the common method ssh-keygen -t rsa which gave me : <user> @ <...
1
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1answer
284 views

For loop not getting executed correctly over ssh

I have a script in which I am reading from a csv file where it contains SourceIp, DestinationIP,Source Ports, Destination Ports. First I am reading the sourceIp and trying to do ssh over it (I am ...
0
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0answers
746 views

Dropbear SSH on Cygwin won't allow passwordless login

I am using Dropbear SSH running on Cygwin, on Windows 7, on a VMware virtual machine, on Windows 8.1. On my physical OS I have Cygwin and I am trying to get passwordless login using openssh on Cygywin....
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1answer
41 views

Best mechanism for logging in and uploading backup files

I have a server that I want to regularly backup. I create backups with encrypted tar using OpenSSL, and now I want to connect to my home server and upload my backed up files there. I need a mechanism,...
2
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1answer
1k views

How to automatically launch a lxc container on ssh connection?

I'm attempting to setup a system that automatically creates a new sandbox on a ssh login to use as a temporary jump box into my server. So to do this I was wonder how to setup lxc to spin up a new ...
7
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1answer
3k views

SSH agent forwarding, multiple hop

I tested this setup with Linux origin machine - everything is the same - only the first hop can use keys from origin machine. Initial problem I'm trying to set up SSH agent forwarding with multiple ...
2
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4answers
13k views

Running bash script on a remote Windows Machine

I am planning to run a bash script on a remote Windows system from my local Linux machine. For this purpose, I will have to log in to Windows machine from the local one and then execute the bash ...
4
votes
1answer
713 views

Is it possible to remove “ssh://” from git remote's URLs?

I'm used to create some manually-made repositories to push code to my pet server or share code inside my company. I use the URL ssh://user@ip/folder.git to add as remotes to my workspaces. I was ...
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1answer
135 views

How can I tell which ports have been used for reverse SSH tunnels?

I have two machines, client and server. client has created a reverse-tunnel on server with something like ssh -R 12345:localhost:12345 server. When logged into server how could I find ports which ...
2
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1answer
142 views

Can SSH proxy requests from the remote system through my local system to the internet?

I have SSH access to a *nix system over a VPN. I need to install some packages from the distro's repos to that system but that system does not have general access to the internet to reach the repos. ...
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2answers
13k views

Running Commands on Remote Linux Server Using SSH

I am writing a Bash Script wherein I need to run some set of commands on a remote Linux server from my local computer using SSH. I want the results to be displayed on the terminal screen or dump the ...
0
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1answer
232 views

Unable to generate ssh public key when installing Redmine

I am trying to set up a Redmine on my server, and I am following THIS setup guide. I have used this guide before on my VPS and it worked perfectly however on this server I get following error when I ...
4
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2answers
2k views

Execute bash commands over SSH while staying in interactive mode afterwards

Probably it is a weird thing I would like to achieve but: I would like to SSH to a remote host and then execute some bash commands like "alias" automatically to use them afterwards in an interactive ...
4
votes
4answers
9k views

Why can't I run Gnome apps over remote SSH session?

Logging into a remote host using ssh -X me@host, I successfully run gnome-terminal -e "tail -F /var/log/file" &. When I log off and then try the same thing the next day, I get this: Failed to ...
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2answers
247 views

How to find out all the files in other machines using bash shell script?

I am trying to find out which files are in machineB and which files are in machineC. And I need to run my shell script on machineA to figure out which files are in machineB and which files are in ...
8
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5answers
8k views

Is there a way to check a users SSH key to see if the passphrase is blank [duplicate]

I'm looking to lock down our Solaris 10, RHEL 5, and SLES 11.2 servers. It has come to my attention that some of the users have no passphrase for their SSH keys. Is there a way I can check for this ...
0
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0answers
59 views

How to add Public IP to Cent OS

I am trying to configure a Public(Static) IP in Cent OS 6.4. For this, I made a copy of eth0(added local IP, so that I can connect the system to Internet) and named it to eth0:0(added Public IP, so ...
3
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4answers
5k views

What are SSH_TTY and SSH_CONNECTION?

What are the SSH_TTY and SSH_CONNECTION variables for? On my Ubuntu system both of them are blank; what values should they have?
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1answer
278 views

Understanding interface forwarding with VPN

I have a server with static IP address that I rented (Debian on it), and I have a server with a server at home which I bought and setup as home server (with Ubuntu Server). What I would like to do is:...
22
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1answer
28k views

Single command to login to SSH and run program?

Is there a way to structure a single command to login via SSH to a remote server and run a program on the remote login shell? In the OpenSSH manual, it reads "If command is specified, it is executed ...
1
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1answer
398 views

Security for a web server for multiple people?

I have an apache web server set up where multiple people have their websites hosted, mostly php based websites. The problem is, when these people upload their website files, it has read permissions ...
0
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2answers
91 views

what is the purpose of -i in front of scp and ssh commands?

What is the "-i" for in the command "scp -i key *username*@address: path 1 *path 2*"? Note: I've seen "-i" used in ssh commands as well.
3
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1answer
413 views

How do I fix this strange behavior with ssh, gnome terminal and gnu screen where function keys F1 through F4 are not accepted?

Here is what I am trying to do: open Gnome terminal launches with my command prompt ssh into work via VPN launch screen create two screen windows try to use F3 and F4 as "prev" and "next" with no ...
3
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3answers
18k views

ssh: Read from socket failed: Connection reset by peer

When I try to ssh to a remote host, I get the following error messages: root@cloudstack-server-1:~/.ssh# ssh ubuntu@172.17.4.17 -v OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012 ...
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1answer
636 views

Is it possible to attach `kinit` to the first attempt to `ssh` without a Kerberos ticket?

My university uses Kerberos-based authentication for login to our unix servers. One way to get passwordless login is to run kinit, type my password, and then run ssh@host. For this setup, I do the ...
0
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1answer
784 views

SSH to Linux Container from Other Machine

I am trying to learn about Linux Containers and this is my first encounter with servers, ssh and many other things that I do not know the terms yet. I create five different containers and authorized ...
1
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1answer
107 views

Share config among ssh aliases [duplicate]

I have a bunch of hosts that I set aliases for in my ~/.ssh/config. They are all part of a certain domain that has certain settings: Host apple GSSAPIAuthentication yes ...
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3answers
414 views

How do I start a server via ssh and have it run after I log out?

I ssh into a virtual server and start up a web server. Everything runs as expected. But when I close my terminal on my laptop, the process dies on the virtual server. How do I fix this?
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1answer
259 views

I cannot use yum command and ssh after mount drive.(CentOS)

As the title above, I cannot use yum command after I mount like below. mount /dev/xvdb3 /usr Filesystem Size Used Avail Use% Mounted on /dev/xvda 9....
1
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1answer
109 views

log into a machine through another, with (de)compression at the ends only [duplicate]

I have looked all around but couldn't find the answer to a very simply question: I would like to log into machine C from machine A, passing through machine B. However, B is slow, so I would also like ...
6
votes
3answers
1k views

Remote ls on multiple machines

I want to connect to multiple machines specified in a file and perform 'ls' there. That's what I've come up with: for machine in $(cat machines) do echo "Connecting to " $machine ssh $machine ...
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2answers
78 views

Attach to an existing ssh tunnel

I have an existing ssh tunnel which connects machine A to C over B. #user@A: ssh -N user@B -L 9999:C:9999 Is there any way to create a new ssh tunnel on D and attach it to the existing tunnel so ...
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votes
2answers
10k views

How to change the user timezone?

I know that (for example in Debian) one could use dpkg-reconfigure tzdata to change the timezone of the system but I am wondering how one could change the user timezone (if Linux/Unix supports such an ...
0
votes
1answer
242 views

Can't terminate PHP daemon process

I've started a PHP daemon process via SSH with php ./my-script.php --daemon Now I want to quit this process, but I can't. It's still active in the foreground of my shell and I've hit CTRL + C ...
4
votes
1answer
1k views

Directx application using wine over ssh -x

I'm trying to run a Windows app (Artemis video game - server mode) on my archlinux server. As it is an windows application I have to run it using Wine. As I'd like to be able to launch the server ...
0
votes
1answer
698 views

Connect to LAN resource via ssh tunnel

I have the following problem. From machine A I connect to machine B over the internet via ssh and port forwarding. Machine B is part of my local network and has connection to machine C which acts as a ...
4
votes
2answers
188 views

Find which ports a program access

I have a program that tries to connect to a server on start-up on a unknown port. I need to find out which port the program accesses to enable a ssh tunnel. I tried netstat but since the connection ...
2
votes
1answer
621 views

Creating a linux user with limited privileges for ssh tunnelling

I am following this post to create ssh tunnel to mysql. The details description of my application scenario is given in my other SOQ. I exactly followed these steps to create a user: useradd -s /bin/...
0
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1answer
864 views

Need to grant two users to an AIX server to just one folder [duplicate]

Ok, in our environment, most users (including myself as one of the unix admins) don't actually have admin rights directly on the aix servers. We login to a front unix server as ourselves without root ...
1
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1answer
2k views

Double port forwarding - SSH

NOTE: I'm not explaining why I want to do this. But here is the requirement. There are 4 hosts. Host A, Host B, Host C, Host D Host A is running some application which can be accessed at port 8001 ...
3
votes
2answers
349 views

Time running a Ruby script is different locally than over SSH

Has anyone else seen this behavior? I created a simple Ruby script for giggles to see how fast it would count up on a couple machines I have. Here's the source: for n in 1...1000000 do ...
5
votes
2answers
16k views

Cannot start xterm over ssh after several successes

I am running some MATLAB scripts on the command-line of a remote computer using ssh. These scripts launch 5 xterms that are forwarded to me via ssh (using the -X option). At the moment I am debugging ...
36
votes
1answer
6k views

redirect sound (microphone) via ssh, how to telephone via ssh?

How can I redirect the microphone of one computer to listen to it on another computer via ssh? Which is the right device or which is the right command line? Some years ago it was easy and fun to ...
7
votes
2answers
2k views

Serve Internet to remote machine via SSH session?

The machine via which I'm SSHing to the remote/host machine (same network/LAN) has access to the Internet but the host doesn't. Running updates and installing packages on the host gets quite ...
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votes
1answer
60 views

How to enable someone to SSH to my server from Windows? [closed]

I want someone from windows to log in into my server using SSH, so he can edit files and install things. Is there a step to step how to do it? I need to: Create his user account. Configure it, ...
2
votes
2answers
637 views

Autofs home directories with passwordless logins

I want a setup where a user home directory is mounted on login (autofs). This is working with password based authentication. However, I want passwordless authentication, by generating public keys. ...
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2answers
992 views

Denyhosts: how to always allow certain known users?

With Denyhosts, how can I "whitelist" a known good user by username plus the fact that they have a valid RSA keypair (or in combination with some other known fact about the user such as MAC address)? ...
28
votes
2answers
77k views

Convert Amazon .pem key to Putty .ppk key Linux

I have generated and downloaded a private .pem key from AWS. However, to use Putty in order to connect to the virtual machine, I must have that key in .ppk format. The process of conversion is ...
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2answers
126 views

Where do I put the private ssh key?

I have set up a key pair and they work fine if I use the -i <privateKey> switch. Where should I put the private key such that I can just type ssh my.remote.host without using -i? I tried ...