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

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2
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391 views

Mint changes default route when eth0 comes back and breaks existing tcp connections

I have two interfaces on my laptop (eth0, wlan0). lets say I am moving away from desk and connecting to an internal network A using openvpn software which uses wlan0 as gateway. I then ssh to a few ...
4
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2answers
4k views

Create user who can only access one directory [duplicate]

I would like to create a user that only has access to one folder and nothing else whatsoever. I have already created a user but he has access to other parts of the system according to corresponding ...
9
votes
3answers
8k views

ssh to private-ip

I have a computer with CentOS (computer A) that configured as has an private ip 10.150.5.141 (with restricted firewall), can access internet and my ArchLinux VPS (computer B) with real ip w.x.y.z How ...
7
votes
2answers
449 views

Use keyboard-interactive authentication when piping ssh output to other command

I'd like to pipe the output of ssh to a different command. For example: ssh myserver cat remote-file | diff local-file - The problem is that myserver asks for a password, but I can't enter it. (For ...
1
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2answers
505 views

Why SSH key login asking me the Passphrase every time?

I use PuTTY and followed this tutorial: http://www.howtoforge.com/ssh_key_based_logins_putty Every time I login I"m being asked to input the passphrase. How do I avoid having to do this?
2
votes
1answer
412 views

Remote PC accessible by ssh, scp/rsync not working (anymore) [closed]

I've got a remote machine running Ubuntu 12.04 LTS. I've used it lots of times to log in to via ssh and to copy files to via scp and rsync. Today I was able to log in via ssh, but I'm not able to ...
5
votes
2answers
305 views

ssh tunnelling explanation

I have a question regarding ssh tunneling. I've read this article http://www.popcornfarmer.com/2009/01/ssh-tunneling-tutorial/ I would like to make X forwarding work and run some X applications ...
0
votes
3answers
10k views

How to download files from a remote Linux (Ubuntu) Server? [duplicate]

How can I download files from a remote Linux Ubuntu server? I have access to this server, but I don't know a convenient way to download a file from there using SSH (PuTTy), for example. Any ...
14
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3answers
9k views

How to SSH into a specific directory?

I frequently login to a server, then cd into a specific directory. Is it possible to simplify these two commands into one? ssh bob@foo cd /home/guest I'd like to avoid changing anything on 'foo' ...
0
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0answers
125 views

CTRL meta key 'sticky' in GUIs over X11 forwarding from CentOS to fedora

Despite numerous problems, I managed to get X11 forwarding working from a SSH server running on a CentOS host to a Fedora client (changing various settings and finally fixing it by installing a ...
3
votes
3answers
1k views

netcat doesn't work as expected when detached from console with nohup (Ubuntu/Debian 64bit)

I'm trying to leave netcat running and close the ssh session (even stop the ssh daemon). But it then exits before all of the data is written. I'm testing in a non-ssh (local) console: nohup nc -l -p ...
3
votes
3answers
1k views

How to view traffic over a forwarded ssh port?

It is possible to setup an SSH port forward where the ssh client prints out the traffic exchanged over the ssh port to the screen or a file. I am trying to debug a problem and want to see what is ...
0
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0answers
232 views

Jailkit not working properly when connecting remotely from iPad via SFTP app

I used jailkit to add users and restrict them to a jail directory. It works for Linux and PC clients connecting to the ssh server but when I connect with iPad it gives them access to everything. I ...
1
vote
2answers
311 views

one IP several guests same port 22

I use Nginx to redirect my domains coming on port 80 to the correct virtual machines, now I'm wondering if I can do this with ssh on port 22. Redirect all ssh traffic to the correct guests through ...
9
votes
2answers
18k views

What do the channel numbers in ssh error message refer to?

In the example below what do the channel numbers correspond to? Which are on the server? Which are on the client? $ ssh -L1570:127.0.0.1:8899 root@thehost Password: Last login: Fri Aug 9 ...
4
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2answers
3k views

Find out screen id

I want to start a program with SSH using PHP, which works fine, but now I want to kill the screen with PHP, but the only thing I know is the name of the screen. How do I find out the screen ID ...
2
votes
1answer
530 views

Can't login to remote debian system with RSA key and ssh.exe from Cygwin

I need to login to a Debian server using ssh.exe from Cygwin. I've generated an RSA key and appended it to the authorized_keys file. Debian is OK, because I was able to use the RSA key using PuTTY ...
1
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2answers
663 views

Remotely compile and run program using ssh and screen

I'm trying to compile and run a program remotely. However, I'd like to this within a screen and also I'd like to run this using grid engine on another node after I ssh. Currently I have: ssh ...
1
vote
2answers
93 views

How do I access a login through ssh when there is no password set?

I would like to be able to access my home machine's account over ssh from a remote desktop. It allows me to connect when I say ssh uname@ip_addr, but it then prompts for a password. This account ...
2
votes
0answers
4k views

ssh-agent not getting set up (SSH_AUTH_SOCK, SSH_AGENT_PID env vars not set)

I set up a new user account for a friend on Kubuntu 12.04. When he uses ssh he gets this error: Could not open a connection to your authentication agent We're running ssh in some bash scripts. ...
2
votes
1answer
1k views

How do I grant someone else access to my linux server

If you administer a Linux server, what steps do you take to properly grant someone else access? Assuming they will log in over ssh, don't already have an account, and will need root access. ...
2
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3answers
12k views

Why do I get error “Could not chdir to home directory”

I work in support, and occasionally I'm given shell access to a remote Linux system. I frequently find that when the admin gives me remote access, that I get the following output upon login. ...
3
votes
2answers
4k views

How to terminate a hung process in SSH?

I have a SSH session with a VM running on Amazon AWS. One of the programs I had run hung up and froze the SSH terminal. So I hit Enter+~+. Now when I am trying to connect to my machine it says ...
3
votes
3answers
16k views

Error `No protocol specified` when running from remote machine via ssh

I have a script, simply to run my Graphical (GUI) Application, as below. #cat gui.sh #!/bin/bash ./gui -display 127.0.0.1:0.0 When I run it from local machine (./gui.sh) it runs perfectly ...
2
votes
1answer
240 views

about route table setting, and ssh between vmware

firstly i got 2 physical machines PC and notebook 1. under PC(WIN7, 192.168.1.2) have a VMWARE, VMWARE installed one solaris(172.168.1.50). I can use putty to access to solaris from PC. ...
3
votes
1answer
3k views

syntax highlighting in vim over ssh

When I ssh from work to the local network, I can turn syntax on in my vim instance and it works. When I go home and ssh in, I turn on syntax highlighting and nothing happens. While at home, if I use ...
5
votes
3answers
17k views

Restrict FTP user to a directory

Sorry if this is an obvious question, but I don't have a lot of knowledge about this sort of thing, and I've googled for hours, nothing worked. So on a Ubuntu 11.04 server, I want to restrict a user ...
4
votes
1answer
1k views

How to fix this eth0 and eth1, where traffic going out via eth0 is failing?

I have two public IPs. One's connected to eth0 and one to eth1, from 2 separate routers as complete DMZ towards the LAN IP. I added this following: ip rule add from 10.0.0.108/32 table 1 # outbound ...
2
votes
0answers
157 views

Moving the mouse over a terminal window generates escape sequences [closed]

When using tmux over a ssh connection, if I launch a program to keep open, I run into troubles when I move my mouse inside the tmux window: ...
3
votes
1answer
223 views

Executing 'ssh-add -D' from a cron job doesn't work

I've set up an openSSH server on an ubuntu-server machine, and I configured it to use public/private key (without password). I want to require both password and key check when the client connects to ...
2
votes
1answer
191 views

how to find the hostname of an X server

Say I'm on machine local and log into machine remote with ssh, using X11 forwarding. Is there any way for programs running within the ssh session on remote can know they are being displayed on local? ...
1
vote
1answer
3k views

scp stuck when trying to copy files from Linux to windows

I use the following scp syntax in order to transfer a lot of files from Linux red-hat 5 to windows machine (under Temp directory). SSH server is already installed on windows machine. I use this line ...
3
votes
1answer
3k views

LAN server 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 Wifi wlan0 interface assigned to 192.168.1.10. ...
1
vote
3answers
385 views

Launching shell script from SSH and disconnect

I have a script which I run from SSH that launches several processes which I would like to keep open when I disconnect from my session. Is that feasible? Launching the script in background is not a ...
8
votes
1answer
2k views

In which cases is SIGHUP not sent to a job when you log out?

I read an answer from a user who claimed that running foo 2>&1 >& output.log & would result in foo continuing to run even when they log out. According to this user, this even ...
0
votes
1answer
441 views

SSH reverse tunnel works except when I use a VirtualBox instance at one end. Why does VB break SSH?

VirtualBox seems to break my SSH ProxyCommand... here are the details: I want to open an SSH connection from my laptop to desktop over an SSH (reverse) tunnel. I want to do that in one step using ...
1
vote
1answer
1k views

SSH alerts for outside IP addresses

So i have a script that emails me if a login is from anything besides an ip address that starts with "10.1.": #!/usr/bin/python import smtplib, os server = "10.10.10.10" From = ...
1
vote
1answer
100 views

Is it possible to download to files while in a SSH interactive? [duplicate]

Here I am, poking around a remote server via SSH, and I want to find out about/read/edit/whatever a file. I don't like vi or other CMI stuff, I want to read it locally. Is there any way I can ...
4
votes
1answer
2k views

SSH: “Permission denied” after changing user shell

I have an SSH server running on my Raspberry PI with ALARM (up to date). My user "gitroot" is meant to use the git-shell. However, when i set /usr/bin/git-shell as shell for gitroot in /etc/passwd, i ...
14
votes
1answer
14k views

Convert OpenSSH private key into SSH2 private key

Is there a way to convert existing pair of OpenSSH keys to the SSH2 (ssh.com format) pair of keys? UPD: since there are some answers about ssh-keygen suddenly appeared, I'll explain where I came ...
0
votes
1answer
2k views

SSH hangs forever?

I'm trying to SSH into a remote VM, and the command hangs forever. Before, when I was trying to get some stuff set up on it, I edited /etc/hosts and /etc/init.d, and I'm worried I might have messed ...
20
votes
3answers
21k views

Tell SSH to use a graphical prompt for key passphrase

How can I force SSH to request passphrases using a graphical prompt (GTK, for example) instead of the standard one that uses the terminal? I tried setting SSH_ASKPASS=/usr/bin/ssh-askpass but it ...
3
votes
2answers
623 views

how does ssh discover hostnames on the network?

We have a server on the company network named serverA, and if I type ssh serverA, it will connect my PC to this server, even though there is no entry for this server in my /etc/hosts, but I used to ...
7
votes
2answers
27k views

With SSH X11 forwarding (`ssh -X`), get `Can't open display` trying to run X applications

I'm able to login to sever using ssh -X Hostip but when i run the command xclock it give me this error Error: Can't open display: localhost:11.0 I check my Display value using echo $DISPLAY ...
4
votes
2answers
198 views

ssh to a specific machine within a network [duplicate]

I'm frequently transferring files and operating programs via ssh, and often from home. The machine I usually work on is a desktop at work that I cannot ssh to directly unless I'm already connected to ...
1
vote
1answer
2k views

Multiple SSH tunnels (local and remote forwarding) over one master OpenSSH connection? Good idea?

The question Using an already established SSH channel has an answer that intrigued me. It suggests that I can reuse an existing SSH connection. However, after further reading, I see that this solution ...
9
votes
3answers
4k views

How to bring back SSH session that was started with the -f option (run in background)

I'm pretty lost on this. From the man page: -f Requests ssh to go to background just before command execution. After starting SSH with the -f option, I have a working tunnel. But after I ...
3
votes
1answer
831 views

Establishing client VNC connection over SSH in one step (e.g., with the -via option)

How do I reduce these two commands to one? I am connecting from my client to an x11vnc server and the two commands below already work. I just wish to do it in one step: first command: ssh -fNL ...
3
votes
2answers
3k views

daemonize rtorrent

Just read the man page, but found no option for this. Maybe I missed it, maybe it doesn't exist. I have a server at home I'm SSHing to for rtorrent, but the torrent stops downloading and won't restart ...
3
votes
4answers
3k views

rsync over ssh tunnel

---------- /| /| ------------ | Home | | | | | | Work | | |--------| |---------------------| ...