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

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2
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3answers
20k views

User denied ssh access while in AllowUsers list

I've inherited the administration of a linux box in my workplace; it was set up by a colleague who is now gone. Recently, I added a new user to the system, and tried to give her ssh access as well; ...
2
votes
3answers
861 views

Is the id_rsa.pub file needed on client side?

If we would use: 1) password authentication through ssh 2) key auth - the public key's line are already in the servers authorized_keys Q: So in either these two ways, storing the public key is ...
1
vote
2answers
2k views

Tunnelling VPN through SSH mac

I have a pptp VPN server set up on my Raspberry Pi at home, and it works really well, except when I'm stuck behind my college's firewall. I can SSH into it through commonly open firewall ports (443, ...
3
votes
1answer
437 views

Making ChrootDirectory directory writable by SFTP user

If a user logs into a machine via SFTP, one can make use of ChrootDirectory keyword to give an illusion that user is in a root directory. But that directory is only writable by root user. I would love ...
4
votes
2answers
830 views

disabling ssh session expiration

I am installed Ubuntu on Virtual Box, and use xshell (a remote terminal application) to ssh to ubuntu. when I hibernate computer during night, after powering it on, the session is expired and I should ...
2
votes
4answers
3k views

Run local scripts on multiple servers using sudo user through a script

I have about 100 remote servers. I want to manage all my servers using one terminal server to update , run commands with sudo privileges. I need to have one main script that takes another test script ...
5
votes
1answer
1k views

How to safely replace one Linux distribution with another one via SSH?

I'm intending to replace a NAS's Custom Linux with Arch Linux (details at the bottom), of course wishing to preserve all user data and (due to the SSH-only headless access) attempting to be fool-proof ...
3
votes
2answers
2k views

Allowing ssh, but only to execute a specific script [duplicate]

Possible Duplicate: Creating a UNIX account which only executes one command There is a shell script which has to be executed through an existing user account XXX. Now I have various other ...
4
votes
2answers
5k views

How can I prevent SSH connection be closed by server for a user with nologin shell?

Basic info: Server OS: CentOS 6.3 Client tool: PuTTY I SSH to my server using PuTTY. I added an account with /sbin/nologin shell. When I log on to that account (selecting "never" close window on ...
0
votes
1answer
464 views

Using ssh_alias with ssh tunneling

I am using ssh tunneling to login to system behind gateway. Problem is that I have ssh_alias defined in ~/.ssh/config on gateway server. Where I have key and ip setup. But those alias don't work ...
4
votes
4answers
3k views

Is there a way to have regular expression in ~/.ssh/config

I have two set of server. Test on production. All server have internal ip. currently I am using alias to login: Host pro-10 Hostname 192.168.1.10 ProxyCommand ssh production-server nc %h %p For ...
1
vote
2answers
1k views

run a remote process via autossh in background

In Ubuntu I'm trying to run the geany editor on my local X display via the command: autossh -o StrictHostKeyChecking=false -XCg me@otherDYNDNShost geany & Trouble is, after the first ...
13
votes
4answers
950 views

Groups differ from the local ones when logging in remotely

We store our users in LDAP, alongside some groups that have meaning across different systems (organizational roles including wheel). There are also groups local to workstations, e.g. audio or video ...
0
votes
2answers
3k views

I think somebody tried to hack me

root@host [/var/log]# tail -f secure Jan 3 20:16:10 host sshd[22670]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.142.131.120 user=root Jan 3 20:16:12 ...
5
votes
3answers
2k views

As what user is an sshfs mounted folder being accessed?

I'm trying to do a network backup of a drive. There are two machines in this process. PC1: Distant machine with 2 hards sda and sdb sdb is the drive which needs backing up two users exist, root and ...
2
votes
0answers
105 views

No communication services enabled following startup

I recently installed Parsix (Debian) on my system, and I've been struggling to figure out how to autostart my services. Of the list of services that don't run and should run are: ssh apache mysql ...
10
votes
3answers
3k views

Configuring ssh fingerprints on dns to replace known_hosts fails

The SSHFP records were generated on the ssh server as follows and then added to the zone in bind: $ ssh-keygen -r www.test.us. www.test.us. IN SSHFP 1 1 ad04dfaf343a93beeb939eed1612168f7eadbed7 ...
2
votes
2answers
533 views

Transfer a file from Android to a PC (not in the same network)

If I were connected by wifi in my network, there isn't any problem because with AirDroid I can access the sdcard files using the browser. However when I am out, how can I transfer a file from my ...
1
vote
1answer
1k views

Running an xterm remotely with ssh -Y, defies the coloring I setup in .Xresources

The xterm seems to not read the colors I set in my ~/.Xresources file when I connect to a Linux PC remotely. Basically, if I'm sitting in front of my PC and I run an xterm from Xsession, the colors ...
2
votes
0answers
1k views

How to set ssh access for user on debian?

I set groups: usermod -G ssh username and then I've checked account info: id username the result is: uid=1000(username) gid=1001(username) groups=100(username) Anyway if I try to login using ...
1
vote
2answers
495 views

How to view Graphical view of Application using ssh [duplicate]

Possible Duplicate: How to forward X over SSH from Ubuntu machine? Is it possible that I can view the GUI of application when I pass some command to Redhat linux Server using ssh. Like when ...
24
votes
1answer
19k views

sshfs mount, sudo gets permission denied

I am using sshfs to mount a folder with some python projects over ssh to my ~/ directory. $ mkdir -p ~/mount/my-projects $ sshfs user@example.com:/home/user/my-projects ~/mount/my-projects I can ...
9
votes
1answer
1k views

How can I limit ssh *remote* port forwarding?

I need to limit which ports can be remotely 'ssh -R' forwarded by an user. I know about permitopen option on authorized_keys, but as it says on man page it only limits local 'ssh -L' port forwarding ...
2
votes
1answer
182 views

Temporarily controlling a shell

On my office computer (running Scientific Linux 6.3) I have several windows running some processes in separate terminal emulators (/dev/pts/). I often connect to my office computer with iSSH from my ...
3
votes
3answers
6k views

How to backup debian system?

I have VPS hosting with debian operating system. I would like to backup whole system time by time. Here is a lot of questions how to backup OS on local machine, but it's not what I need. I have just ...
3
votes
1answer
473 views

Clipboard over SSH session through VIM

I have a server running SSH, when I edit a file with vim on the remote server, :y+ doesn't work since the VIM binary on that linux system wasn't compiled with X support. (E488: Trailing characters) ...
5
votes
2answers
5k views

Scp doesn't work in cron

Yeah, I know it's classic. I've googled it all around, but still it doesn't work. I have the following script: #First go to SVN repo folder cd $svnrepos # Just make sure we have write access to ...
5
votes
3answers
2k views

Remote shell script Enter passphrase for

How can I run a script to log into a remote server and execute a remote ssh command without entering in my passphrase? For example: When I log onto a remote server and execute the git pull command I ...
4
votes
2answers
5k views

SSH window forwarding with Xming

I have installed fedora 17 on the old desktop computer and put it to DMZ of my NAT network - i.e. whole computer is accessible via public ip address to the internet and could be called "server". I've ...
3
votes
2answers
2k views

I can ssh into a remote machine but I can't use scp to copy local stuff to the remote machine

I'm using a remote machine, which is in a lab and the administrator ask a RSA public key and then I can login into that machine using a passphrase I set now I want to use scp to copy local stuff to ...
4
votes
1answer
1k views

Why ssh-copy-id prompts for the local user password three times?

Noticed from my previous question that when trying to copy an SSH public key to a remote host via ssh-copy-id, I am prompted for the local user password three times: ssh-copy-id myuser@myserver ...
4
votes
1answer
103 views

how to escape “\”in ssh-copy-id?

I'm connected to Ubuntu server that is a member of a corporate Active Directory domain via likewise-open. The users are in the form mydomain\myuser. I can connect to it via ssh, escaping the \ with ...
9
votes
3answers
12k views

Disable colours on terminal and SSH

My local Linux machine has coloured terminal output like this; When I SSH to a pfSense/BSD box it changes the colours like this; Even when I SSH from to a machine that doesn't have a coloured ...
53
votes
1answer
41k views

How to list keys added to ssh-agent with ssh-add?

How and where can I check what keys have been added with ssh-add to my ssh-agent ?
4
votes
1answer
1k views

How to point to ssh folder with private keys to automatically choose one?

I would like to be able to use ssh user@host without the -i identity_rsa_or_else_private_key_file . Is there a place somewhere in ssh configs where I can point where are the private keys located ...
5
votes
3answers
198 views

SSH to two addresses, use the one that connects first

I have a home computer (let’s call it franklin because that’s what I call it) that I often ssh into from my work laptop. When I’m at home, I ssh to franklin.local, and when I’m at work or anywhere ...
1
vote
1answer
113 views

keeping keys on an auxiliary removable drive

It seems that servers are only as secure as the machine that holds the keys and that in turn means the desktop/screensaver password is the line of defence for not only the desktop itself but any ...
2
votes
1answer
2k views

permission denied executing script over ssh

When a web page is loaded on server A i want it to run a script on server B. I can do this with a series of commands from server A by logging into server B and executing the script, but it needs to be ...
1
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0answers
165 views

Client-server app for sending and monitoring asynchronous jobs

I am looking for a desktop app/IDE in which you can: Maintain a list of UNIX/Linux connections Be able to write a script locally in a local editor, not SCP files to the host or writing them on the ...
1
vote
1answer
543 views

Move files to mapped network folder

I was wanting to know the best or preferred way to move files from one computer to a networked hot folder. I have looked at mv and cd but all the references discuss using it locally. I would need to ...
4
votes
6answers
7k views

Closing connection after executing reboot using ssh command

I am using the reboot -f command remotely to force reboot a Unix machine. The problem is that the ssh connection remains active for a long time which I don't know why? I want to close the ssh ...
0
votes
0answers
525 views

Host reachable via SSH from my desktop but not my laptop

I try to use ssh to log in to a remote host. This works for my Ubuntu desktop, however, it fails from my Fedora 14 laptop. The failure means after I type ssh username@host and pressed Enter, ...
2
votes
2answers
1k views

Bypass sshd AllowTCPFowarding=no by installing own forwarder?

In the man pages for sshd_config, for the AllowTCPForwarding option, it states: AllowTcpForwarding Specifies whether TCP forwarding is permitted. The default is “yes”. Note that disabling ...
10
votes
3answers
15k views

Copy over ssh and execute commands in one session [duplicate]

Possible Duplicate: Using an already established SSH channel Here is my sync script: ssh user@remote.host /etc/init.d/some_service stop scp user@remote.host:/var/some_service/events ...
7
votes
0answers
9k views

What's this SSH error about “incorrect RSA1 identifier” and “unspecified GSS failure”? [closed]

How can I fix this SSH problem? SSH debug errors When issuing ssh -vvv user@host the output includes the following debug messages: [...] debug3: Incorrect RSA1 identifier debug3: Could not load ...
0
votes
1answer
1k views

How to copy a folder from remote machine to my system using ssh or any other way

Hi I need to copy a folder of size 885 MB from a remote machine to my system using ssh and port no is 1500 What is the command I can use to accomplish this path of remote folder is ...
1
vote
4answers
4k views

Connect to SSH from outside LAN [duplicate]

Possible Duplicate: How to connect two computers via internet with ssh? I'm in LAN running an SSH deamon on one of the Linux machines. I use it to connect from my PC. Now the problem is I ...
2
votes
2answers
976 views

How to copy a partition over network

I want to copy a Windows 7 partition that came installed on my laptop to my desktop computer. I've tried: # bzip2 -c /dev/sda5 | nc 192.168.1.1 2222 # on laptop # nc -l 2222 | bzip2 -d > ...
3
votes
1answer
807 views

Can I execute commands from a midnight commander ssh connection?

When I connect to a VPS via a Shell link in MC, the location of the command prompt remains at my local box. I would like to be able to execute commands (e.g. mkdir, tar/untar) directly from the ...
12
votes
3answers
20k views

Why does my X11 forwarding attempt fail with “connect /tmp/.X11-unix/X0: No such file or directory”?

On my local machine, I run: ssh -X me@remotemachine.com (For completeness, I have also tested all of the following using -Y with identical results). As expected, this accesses remotemachine.com ...