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

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3
votes
2answers
504 views

Grant ssh access for single session

I wonder if there is a tool/modified ssh-server/ssh option which enables me to grant ssh access for a single session to a given user. What I want to avoid is creating a user account and password for ...
1
vote
2answers
157 views

Keep the ssh session

I am using Macbook developing a client application. I want to access server logs, so I opened a shell terminal and established a ssh connection to the server and access the log file there by ...
0
votes
2answers
207 views

DenyHosts and no-ip.com

I recently installed DenyHosts and after a few remote logins I noticed that sshd: 8.23.224.110 had been added to the host.deny file after /var/log/auth.log showed a few sshd: Did not receive ...
1
vote
2answers
1k views

scp hangs on SSH2_MSG_SERVICE_ACCEPT received

I frequently scp my file to remote host. But suddenly it started taking more than 30 seconds to copy 20kb file.It used to take not more than half a second. After referring to some blog I appended ...
4
votes
1answer
434 views

preventing the screen from being cleared when exiting an ssh session

I have rdist set up to push out some of my dot files to all the remote machines that I need to ssh into. I also have zsh as my default shell on all of those machines. When I ssh into a machine and ...
1
vote
1answer
606 views

SSH disconnects when screen locked with vlock

I'm using tmux + PuTTY to get all the UNIX goodness I need when using Windows. I have the following settings in my .tmux.conf: set-option -g lock-command vlock set-option -g lock-after-time 1800 As ...
2
votes
1answer
346 views

Restrict two way SSH and Apache authentication to non-local networks

I am using Google's open-source PAM module for two-way authentication for SSH logins and certain Apache directives. It works great, however I would like to use this only when trying to log in from an ...
0
votes
1answer
1k views

Unable to login to my server using ssh

Yesterday I was migrating to my new server, needed to use rsync, I created a RSA key, so that rsync could connect, I saw an error that says add to trusted key in location x I didn't have that location ...
0
votes
2answers
131 views

Transfering files using ssh

I've found the following command pretty convenient for transferring files to servers I have ssh access to: cat myfile.txt | ssh my.host.edu "cat > myfile.txt" Is there a similarly convenient ...
0
votes
1answer
1k views

non root ssh keys help

I'm having issues setting up a different CentOS account with its own pair of SSH keys. I have created the required files but when connecting with Putty it says Connection refused, here's the putty ...
6
votes
2answers
802 views

ssh-agent: don't forward authentication for the whole keyring

I have two private ssh keys : one to access my personnal machines, one to access servers at my job. I add those two keys to my ssh-agent with ssh-add. Now, when I do ssh -A root@jobsrv I ...
0
votes
1answer
294 views

emacs fonts from ssh not as good as locally installed

How can I have the same emacs fonts and antialiasing configuration that I have in my local Ubuntu 12.04 also working when I open an emacs session via ssh to a CentOS 5 system? EDIT: I didn't get an ...
0
votes
1answer
42 views

Synchronizing subdirectory with root directory

I have files like this on my linux web server: folder1/ <- main, this is where users of my page are led to folder1/testing/ <- copy of folder1(without folder1/testing/) to modify and optimize ...
0
votes
1answer
421 views

Copy modified files from one server to other

Scenario: 2 Servers (*.12 and *.13) CakePHP "application" on both of them. *.12 is "Production" Server *.13 is "Development" Server Now i want to copy all files modified the last 2 days from test ...
18
votes
2answers
26k views

scp and compress at the same time, no intermediate save

What is the canonical way to: scp a file to a remote location compress the file in transit (tar or not, single file or whole folder, 7za or something else even more efficient) do the above without ...
1
vote
1answer
120 views

Access X-window and sound on laptop on another Unix

I read up a lot about forwarding x-server onto remote machines, but I feel like I'm too dumb to get it to work. Let me first explain my goal: I have a Rasberry Pi running archarm hooked up to a TV. ...
2
votes
1answer
782 views

How to password-less log on via ssh alias

Suppose I have access to pc via a server. I can directly log-on to pc by using How do I connect to a pc through another pc using ssh Such that my .ssh/config looks like: Host short Hostname pc User ...
5
votes
3answers
2k views

Transferring Files SSH SCP Error Message: 'Stdin: is not a tty'

I am using a Macbook SSH terminal and generated RSA key pairs and uploaded remote id_rsa.pub with approved permissions. I can connect with remote Apache web server. I can create, open, move, modify ...
2
votes
1answer
5k views

How to put value of echo pipe netcat commands into variable [duplicate]

I have this command succession: echo -ne "/dev/shm/test.sh" | netcat 89.196.167.2 4567 and let's say it return a string like, for example "Hello...bla". (on the 89.196.167.2 i have made a server ...
12
votes
4answers
15k views

Automated ssh-keygen without passphrase, how?

I would like to make an automated script that calls ssh-keygen and creates some pub/private keypairs that I will use later on. In principle everything works fine with.... ssh-keygen -b 2048 -t rsa -f ...
1
vote
1answer
171 views

doing an rsync across multiple machines

I have the following setup: Machines A, B , C running linux. I have to do a continuous rsync from machine A to machine C and have a script for that. However, the access to machine C from machine A is ...
1
vote
5answers
3k views

How to securely automate running commands as root with “sudo su -”?

hint (on client side, how to encrypt files/pwd's): # encrypt pwd with ssh key: openssl rsa -in ~/.ssh/id_rsa -outform pem > ~/.ssh/TEMP-id_rsa.pem 2>/dev/null openssl rsa -in ~/.ssh/id_rsa ...
3
votes
4answers
17k views

How can I share files between two Linux machines over LAN?

I am currently running Fedora 18 with Gnome on two computers which are connected to the same router. I have been using Samba to share files between the two, but I know there must be a better way. On ...
1
vote
2answers
1k views

How to transparently monitor SSH access/network traffic in Gentoo/general linux?

What's the most effective way to monitor SSH access in Gentoo Linux? My Gentoo box is operating locally behind my broadband router. I have SSH port forwarding on the router and a DNS entry pointing ...
2
votes
2answers
2k views

Connecting to host by SSH client in Linux by proxy

I am really struggling with this. My host (A) is behind a proxy/firewall (PF) and needs to connect to host H. The proxy has HTTP/FTP/SOCK proxy configured and I have no issue to configure in ...
0
votes
1answer
37 views

How to identify which application is trying to access the unixbuild server?

The error message I am seeing is: Failed publickey for raj from 10.*.*.** port 34355 ssh2 Mar 18 05:22:34 unixbuild sshd[16956]: [ID 1000034 auth.info] Failed password for raj from 10.*.*.* port ...
-1
votes
1answer
163 views

SSH File Transfer

Is it possible for me to use SSH to transfer files from my linux computer to my macbook, if so, can anyone post a brief tutorial? I kind of understand how to use SSH, but I need to know how to find ...
0
votes
1answer
169 views

Local host always being added to /etc/hosts.deny when trying to SSH

I have a rather odd problem with my server. For some reason the local hostname for my workstation keeps getting added to the /etc/hosts.deny and when I try to SSH I get: ssh_exchange_identification: ...
3
votes
1answer
3k views

SSH via Corkscrew to a remote server not working

I am trying to SSH to a remote server from my college network (proxy). However, I am getting this error whenever I try to SSH to the host ssh_exchange_identification: Connection closed by remote host ...
2
votes
1answer
174 views

Configure SSH keys for production and DR server

Here is the case, we have successfully configured SSH keys (and hence password-less SFTP connection) between ProdServer-A to ProdServer-B. It works, or so I thought still yesterday. Yesterday ...
3
votes
2answers
757 views

Detecting monitors on machine over local ssh connection

I need to write a script to check on video related things on machines in the local network, e.g. Is a monitor plugged in? Are the video drivers up to date and appropriate for the hardware? Is Xorg ...
-1
votes
1answer
184 views

How to fetch logs from diffrent servers using one command? [closed]

How to fetch logs from diffrent servers using one command? For example, suppose I want to fetch logs for same id in different servers. I have to go to each server and search for logs. Is there any ...
14
votes
2answers
6k views

(SSH) Is it dangerous to close terminal without “exit”?

This happened many times. While the SSH active, I'm so tired and just close the terminal without exit Is it dangerous to doing like that?
2
votes
2answers
129 views

Remote access SSH problem

I have been asked to setup a lab with 1 PC (fedora 18 OS) and 4 SGI (IRIX 6.5 OLD OS). I am using a switch to connect them to university's network, and I asked tech guys to assign static IPs to them. ...
0
votes
2answers
1k views

access a command line via a web browser

2 questions: Question 1 My job blocks ssh which means that I cannot ssh to my home server. However, they do allow https out. Is there a package out there for ubuntu that will allow me to connect to ...
0
votes
2answers
166 views

SSH -L Tunnel no longer working

Local machine running my scripts needs to access a remote server's DB. Last week I could do, on the local machine ssh -f -N -T -L1081:localhost:3306 ueser@remoteserver -p2222 on the local machine: ...
2
votes
2answers
626 views

SSH client side problem: hanging and timing out on some hosts

From my laptop I'm trying to connect to HOST1 and I get: $ ssh -vvv user@HOST1 OpenSSH_6.0p1 Debian-3ubuntu1, OpenSSL 1.0.1c 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: ...
8
votes
4answers
10k views

Prevent SSH client passing TERM environment variable to server?

I'm currently using Fedora 18 gnome-terminal, then started tmux multiplexer in it. After I connected to a CentOS 5 server via ssh command, I find: ls result has no color tmux, screen, hexedit, htop ...
2
votes
0answers
83 views

Why isn't hydra being disconnected?

I have SSHD running on port 5800 on some machine. (It is a my machine at home.) If I run this manually in a terminal: # ssh someIP -p 5800 The connection is lost because I am disconnected after 3 ...
4
votes
2answers
2k views

ssh_exchange_identification: Connection closed by remote host

OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug2: ssh_connect: ...
2
votes
2answers
517 views

Provide passphrase to plymouth ask-for-password from command line

I'm working on booting a headless server (Fedora 16), entering the passphrase to decrypt the root disk (LUKS) over SSH using dropbear. I've got dropbear all working: I can SSH to the server while it's ...
2
votes
2answers
570 views

Why does my Emacs toolbar look different over ssh w/ X forwarding on Cygwin vs CentOS?

I'm using Emacs 24.2.1 installed on a CentOS 5 server, which I ssh into with X forwarding (using -Y). I have both a Windows laptop with Cygwin/X installed, as well as a desktop running CentOS 6. When ...
4
votes
2answers
216 views

Determining the Password Status of a User

I have a debian box that I connect to via SSH. I have removed the password from the users root, and my personal account using the instructions here, and set up a public/private key pair so I can log ...
3
votes
1answer
848 views

Route SSH to host through interface

Is it possible to route all outgoing requests for SSH (port 22) to mydynamicdns.afraid.org via wlan0 instead of eth0 when both are connected? Since my IP is dynamic, I would like to use a name ...
0
votes
2answers
236 views

how to code c++ via ssh with Vim or Vi? [closed]

Would I have to rent and configure a server or something? I'm sort of new to unix, but when I was in school I had this nifty setup where I could ssh from any terminal in linux or mac or putty in ...
7
votes
2answers
21k views

bash shell - ssh remote script capture output and exit code?

I wish to use shell to invoke a script on a remote server. I would like to capture the output of that script (its logging messages) and the exit code it returns. If I do this: ssh user@server ...
18
votes
3answers
2k views

How to prevent shutdown when an SSH user is logged in?

I'm administrating a networked environment and I had an interesting situation arise yesterday. When a host is required to shutdown by a regular user, it refuses to do so if other users are logged in ...
2
votes
1answer
1k views

SSH host key keeps changing

I am trying to set up a web service (using the Play Framework) on an Ubuntu machine on the network. However, I am experiencing intermittent failures connecting to it, not being able to connect to it ...
1
vote
1answer
692 views

How to ssh on multiple ipaddress and get the output and error on the local *nix machine?

command="ls -lrt;uname -a;uname -o" for i in 10.38.227.229 10.38.164.103 do ssh auto21@$i "$command 2>&1" >> log #ssh -n auto21@$i "$command" 2> >> log done i am trying ...
11
votes
1answer
5k views

SSH causes while loop to stop

I have finally managed to boil down a problem I have been struggling with for a few weeks. I use SSH with "authorized keys" to run commands remotely. All is fine except when I do it in a while loop. ...