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

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29
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2answers
5k views

What's the purpose of the randomart image for user (not host) SSH keys?

The ssh-keygen generates the following output: The key fingerprint is: dd:e7:25:b3:e2:5b:d9:f0:25:28:9d:50:a2:c9:44:97 user@machine The key's randomart image is: +--[ RSA 2048]----+ | .o o.. ...
6
votes
0answers
856 views

Have tmux wait until I SSH in, to complete rest of Tmuxinator script

After recently discovering tmux and Tmuxinator, I've been trying to set up a development environment to use. Per protocol, we aren't allowed to store passwords/passphrases in scripts. So what I'm ...
3
votes
2answers
1k views

Ctrl-S doesn't work in rtorrent when accessed via screen. Can't start torrents

I run rtorrent remotely on a seedbox. When I log in with a web interface I'm able to start torrents, and when torrent files get dropped into my watched folder that works too. However, when I try to ...
-2
votes
1answer
283 views

connect remote host without password in linux [duplicate]

Am trying to connect remote host by using ssh: ssh xxxx@hostname. It will connect by asking password. But I need to connect host with out password.
2
votes
1answer
1k views

vim: Use different colorscheme when connected over SSH

On my desktop I use the hbrid color scheme in vim, with the preferred colors set for my consoles 16-color palette (as described in the README). However, on my laptop, I use the solarized color scheme,...
1
vote
0answers
370 views

ssh from an unix server to a windows server (running Sysax) fails [closed]

We are doing a sFTP from an Unix server to a Windows server and also a ssh, from the Unix server to the Windows server, to execute a file present on the Windows server. These 2 steps worked well. Now,...
12
votes
4answers
10k views

Run a diff between local and remote files

I'm connected on a host via ssh and I'd like to compare (let's say with diff) a certain config file against its counterpart on an another host, also accessible via ssh, without having to manually ...
2
votes
1answer
260 views

SSH config file + shell script help

Well, what I want to do seems a bit convoluted but its the only way I can think of to get the result I want. So here goes. I want to automate ssh to my Pi, in the following fashion: My Pi boots up ...
2
votes
2answers
798 views

Allow multiple remote connections to an ssh Dynamic forwarded port

Let us assume I have three machines A - Server to which I am sshing to B - Client from which I am sshing C - Another Client in B's subnet Now, I set up dynamic port forwarding for port 1235 by ...
1
vote
1answer
11k views

Password-Less SSH Login not working [closed]

I create a SSH Key file on Server A using RSA method ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/oracle/.ssh/id_rsa): Enter passphrase (empty ...
1
vote
2answers
154 views

Reject ssh connections made from proxies

I was seeing this question which was concerned with blocking access to the users who do not belong to a particular region. I am sure that blocking is possible but I see there is a workaround to this. ...
1
vote
1answer
1k views

DROP all for port 22 if not geoip set of US for iptables and xtables

I want to simply block all ssh access from anywhere but with in the US. This is my whole iptables, and I have followed http://www.howtoforge.com/xtables-addons-on-centos-6-and-iptables-geoip-...
0
votes
3answers
85 views

Is there a log for sshd where I can see who has used ssh to access my PC? [duplicate]

I am running the OpenSSH daemon (sshd) on CrunchBang Linux, and I want to see a history of who (i.e. IP address) has logged in using SSH.
2
votes
1answer
180 views

CentOS 6.4: SSH RSA key issue, “[…]== rsa-key-20140711\n failed”

For some reason sshd is reading from my authorized_keys file a new line that does not exist. I generated the keys with puttygen, copied the public key text in as required, concatenated the key into ...
3
votes
2answers
2k views

SSH Agent Forwarding on server

I'm struggling with the concept of SSH Agent Forwarding. This is what I've done so far: Create default identity local (ssh-keygen) Install the public key on bitbucket Now I want to connect to a ...
1
vote
2answers
1k views

Locked myself out of Amazon EC2 SSH - This service allows sftp connections only

Doh. Locked myself out of SSH on an Amazon EC2 box after fiddling with ForceCommand internal-sftp in /etc/ssh/sshd_config in order to allow root log-in via SFTP. SFTP still works fine, but PuTTY ...
4
votes
3answers
4k views

Monitor all login attempts

Few weeks ago I thought it would be a good idea to write a script to send me an email whenever some user logs in into my server. So I came with a perfectly working script notifyLogin.sh, then I ...
4
votes
0answers
1k views

Can't figure out why ssh_exchange_identification: Connection closed by remote host appear

At home, I have setup a Raspberry Pi with the latest version of Raspbian and with ssh enabled. I also use a Mac Book Pro with OS X 10.9.3. I use ssh pi@192.168.0.22 to do some work on the Raspberry ...
2
votes
1answer
918 views

sudo -u git clone

I'm on Ubuntu server 14.04. I am using apache web server which runs as the www-data. I need to do git clone from a script (a web hook). This script will run with www-data user privilages. Running ...
0
votes
5answers
1k views

Downloading file through SSH with a “proxy” machine inbetween

I need to download a file from machine C to machine A. To do that, I need to login to machine B (I am doing this using scp), as I cannot access C directly from A. Would it be possible to download a ...
1
vote
1answer
55 views

SSH and certificates - how to connect?

My geeky friend has dropped me this message: Debian instance has been created for you with IP address of 10.5.0.95. Remember: To connect to it, you need the certificate: ssh -i xxx.xxx admin@10.5.0....
2
votes
1answer
55 views

ssh -X foo@host then su bar then run X app with local display, while bar also logged in?

I want to ssh into another machine, using one user account, then su to another user and run X programs as that user, with the display on my computer. The case when the 2nd user is not logged in to X ...
0
votes
2answers
487 views

Locale not being set on initial login on Raspbian/Debian

When I log in to my headless Raspbian box using putty/ssh, the locale is not being set correctly. However, if I su to another user, then su back, the locales are then set. This session shows the ...
1
vote
2answers
999 views

Shell Script - how to scp into remote server and download files and protect password

I have a remote server that I need to download Apache logs from. I can manually scp into the server and get the files, but I'd like to put this in crontab. The only way to automate it is to include ...
3
votes
0answers
438 views

Can't get SSH working anymore on Debian after upgrade

I have a vServer and can only login via SSH. After the latest apt-get upgrade command, I can't login anymore and get the following error message: "Network error: Connection refused". It seems that ...
2
votes
1answer
618 views

Bash Script Display Remote Screen Session to User

I'm kind of new to bash scripting and I'm having trouble figuring out how to accomplish this. I'm working on a script that is designed to backup and manage a java application that runs within a ...
4
votes
2answers
1k views

Remotely turn off display output?

I'm using x11vnc and SSH to tunnel VNC remotely to my local machine. One of the interesting side-effects of this is that as I use my work computer from home, my coworkers will see me moving around ...
9
votes
5answers
8k views

Securely tunnel port through intermediate host

I'm looking to route a port for VNC back to my house here. I have to jump over a single host to then hop to my actual work machine. sittinghere will be my local home machine hopper will by the ...
0
votes
0answers
48 views

Cannot open GUI's via SSH connection? [duplicate]

I've just connected to a Linux terminal using an ssh client. I'm running Linux on both desktops, but cannot open PDFs, IDE, or other graphics from the ssh client. How can I fix this?
1
vote
1answer
273 views

SSH slow after configuring TCP Wrappers

We have SSH open on one of our production servers leaving it prone to various brute force attacks to break in. I reduced the attempts by changing the default port from 22. I want to further harden ...
8
votes
1answer
987 views

Using SSH to connect to a new server without storing the host keys in the $HOME/.ssh/known_host file

I get the following output if I run the following command: -bash-3.2$ ssh -o "StrictHostKeyChecking no" 192.168.1.77 Warning: Permanently added '192.168.1.77' (RSA) to the list of known hosts. Last ...
6
votes
2answers
9k views

SCP Lost Connection [closed]

I can successfully connect to my server via ssh but when trying to run the scp command I get a connection time out. $ scp ~/.ssh/id_rsa.pub root@192.168.12.2:id_rsa.pub ssh: connect to host 192.168....
0
votes
1answer
47 views

Backup of data from Linux PC [duplicate]

I have Linux PC, for which monitor is not working. But I am able to log in through SSH. I want to take a backup of all the directories from this PC. Instead of changing directories one by one and ...
2
votes
3answers
183 views

force ssh to change dir after login based on config

Is there any way to force ssh to change it's working dir in ~/.ssh/config or by using other configuration files? I have a lot of servers with different environments. Each environment is installed in ...
2
votes
1answer
91 views

SSH'd into a computer, uptime / who / users report 0 users?

I'm ssh'd into a server. Why doesn't the server report it? # uptime 21:54:28 up 13 days, 3:47, 0 users, load average: 1.18, 1.11, 1.13 # users # who I'm not really sure I understand it correctly,...
4
votes
0answers
796 views

SSH AuthorizedKeysCommand and SELinux

I'm trying to use the SSH AuthorizedKeysCommand in a CentOS 6.5 machine, but I'm encountering an SELinux error. When I switch SELinux to permissive mode - using setenforce 0 - it works, but when I ...
8
votes
1answer
15k views

Executing commands with ssh and shell script using variables on a remote machine

I'd like to execute a command and script located on a remote machine with a script on a local machine. I know it's possible to execute these kind of commands with ssh, so I made: #!/bin/bash ssh ...
5
votes
2answers
1k views

Why does ssh -g say that address is already in use?

I setup an SSH connection with port forwarding that allows remote hosts to connect to the local forwarded ports like this: ssh -g -L 5115:localhost:5115 <server> The connection works fine ...
4
votes
2answers
327 views

777'd some files. How do I repair SSH?

So I'm messing around on a test server and accidentally ran the following (which resulting in SSH breaking): # chmod -R 777 /var Because it's a test server, I'd rather not re-install right now, I ...
2
votes
1answer
151 views

What commands does git use when communicating via ssh?

Using command="" in authorized_keys, I can restrict the commands that can be run by a particular key. What commands do I need to allow in order to have a functioning git remote? From the Pro Git ...
48
votes
2answers
23k views

ssh-add is not persistent between reboots

I add a ssh key to the agent by $ ssh-add ~/.ssh/id_rsa_mac Identity added: /Users/alex/.ssh/id_rsa_mac (/Users/alex/.ssh/id_rsa_mac) After reboot I don't have this key added anymore: $ ssh-add -l ...
0
votes
0answers
482 views

Unable to SSH into Puppy Linux, even though SSHD is running

I installed OpenSSH client and server on my Puppy Linux computer. That computer is behind a router. I tried to ssh into it over the internet (outside the router) but it times out. Also doesn't work if ...
1
vote
0answers
131 views

xtightvnc through ssh gateway — connection refused

Following setup: homepc -> gateway -> workpc workpc:~$ tightvncserver :12 homepc:~$ ssh -N gatewayuser@gateway -L 1212:workpc:5912 Now I try to connect via homepc:~$ xtightvncviewer localhost:...
4
votes
1answer
13k views

SSH: Network is unreachable (caused by router)

I've searched solution in Google for 3 days, when I decided to write here. I have a router, so in my house is WLAN. I use laptop when I stay at home. In another city in my office I have a second ...
1
vote
2answers
1k views

Using exec in find over ssh from shell script

So, I am attempting to execute the following from within a shell script; ssh -q $CUR_HOST "cd $LOGS_DIR; echo cd $LOGS_DIR; find . -name *.log -mmin +1440 -exec gzip {} \; exit" When this runs, it ...
0
votes
2answers
527 views

Locked out of Ubuntu machine

I recently made changes to my EC2/Ubuntu instances by installing OpenSSH, before I was able to SSH just fine, however now I'm getting this error: ssh: connect to host shopious.com port 22: Connection ...
1
vote
5answers
17k views

How to copy a file from a remote network to the local desktop

So I used SSH to remotely login to another computer on a network. I have many files that I would like to copy over to my local desktop. I am trying to follow this How-to : However, I think one ...
0
votes
0answers
136 views

SSH can't use internet when multiple interfaces present in route

I'm trying to make SSH tunnel connection on any possible interface (which has internet connection). I'm currently using ppp0 and eth0 interfaces. ppp0 always has internet and reinitialized if ...
-3
votes
1answer
583 views

Authentication failed [closed]

You have no controlling tty and no DISPLAY. Cannot read passphrase. warning: Authentication failed. Disconnected (local); authentication cancelled by user (Authentication cancelled by user.). ...
7
votes
3answers
2k views

Weird SSH issue, ssh works with -t but freezes without it

When I ssh into one of my servers, it seems to log in, but then hangs before giving me the prompt (message debug2: shell request accepted on channel 0 is the last log entry). Though the odd thing is ...