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

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4answers
751 views

Are commands executed through SSH transparent to a remote host's administrator?

Can administrators know what commands I execute non-interactively through SSH? For example: does echo hello get logged somewhere at remote if I run this? $ ssh me@remote "echo hello" Can remote ...
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2answers
188 views

Different configurations for ssh client depending on ip address or hostname

I have this in my ~/.ssh/config directory: Host 12.34.56.78 IdentityFile ~/.ssh/my_identity_file When I ssh to 12.34.56.78, everything works fine. I'm asked for the passphrase for "...
2
votes
2answers
57 views

Address of host you connect from

When you connect to some remote machine using ssh, is there an easy way to address of the machine you connecting from ? (with some env variable, or hostname for instance) Main use how that would be ...
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1answer
218 views

Gnu Screen and vi - visualization issues

The scenario is as follows: gnu screen launched onto a scientific Linux distro ssh to an aix machine tried to edit a file with vi And this is what I got: "ex: 0602-108 screen is not a ...
1
vote
1answer
73 views

Bad known_hosts file when connecting to loadbalanced domain

FOO.COM has two A records. 1.1.1.1 and 2.2.2.2. If I connect to ssh root@FOO.com then it sometimes can connect, sometimes it writes that there is a key mismatch, update known_hosts file. So I know ...
3
votes
1answer
109 views

What are all of the SSH Key files?

There are six key files in /etc/ssh directory for private and public keys. 4 of them are for DSA and RSA public & private keys. but there are two more files named ssh_host_key and ssh_host_key.pub,...
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1answer
7k views

Trying to open a GUI from a remote server using Mac but not succesfully

I'm brand new user in MacOSX. I'm using ssh to connect to some Linux servers. I'm trying to open a GUI locally for a process running in the remote Linux server. So I read that I should install ...
0
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2answers
51 views

Determine users of nearby machine from CLI

Ok, so at my house I have three computers, and I frequently enjoy using ssh and scp to run commands that allow me to do wonderful things. Primarily transferring downloaded files, and running media ...
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3answers
16k views

change shell in Solaris/SunOS for your user only wihtout access to /etc/passwd

How do I set the shell in Solaris/SunOS for my user only, without access to /etc/passwd or any other su stuff? It should thereafter work both for interactive ssh (1) and ssh when you send commands (2)...
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2answers
3k views

PHP exec command has the result 0 even if an error occurs

I have this PHP code: $execout=exec('ssh root@xxx.xxx.xxx.xx "sudo /etc/init.d/smokeping reload"',$output1,$result); if($result !=0){ echo"that can't reload"; } else{ echo "successfully ...
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0answers
42 views

SSH Login with key but without password with regular user on Synology Diskstation [duplicate]

For backup purposes I wan't to login to my Synology DS212j+ without using a password (but with a passwordless RSA key) and with a regular user (let's say the username is 'regularuser'). I've gotten ...
23
votes
4answers
14k views

Why does `cd` command not work via SSH?

I was trying to backup some files via SSH but instead of tar'ing the ones I wanted I got my home folder. I did some further testing and it boils down to this: ssh root@server /bin/sh -c "cd /boot &...
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votes
3answers
8k views

How can I scp a file that my user can't read but I can sudo?

Can I use scp to copy a file from a remote server which my login user can't read, but where I have permission to sudo to root (without password even)? How?
0
votes
1answer
4k views

Remote desktop (KDE) over SSH reverse tunnel

I have a reverse ssh tunnel through a middleman server set up and working. I'm running Kubuntu 12.04 here and on the remote machine. I want to open a remote desktop session. Until now I've been ...
4
votes
3answers
9k views

How to run sudo commands remotely via ssh -t?

I have a script that logs into a remote host via ssh -t and uses sudo service foo restart. The requirement is to avoid the prompt for a password on the remote host. The remote host authenticates via ...
2
votes
3answers
662 views

denyhosts is blocking existing users from logging in from unknown (new) IP addresses

I have denyhosts set up and working on Ubuntu 12.04. It apparently works well, except it is too strict. I can log in from any IP address that I have added to hosts.allow in advance. My sshd_config ...
7
votes
1answer
10k views

start autossh reverse tunnel automatically when network comes up

I connect from my home PC thru an Internet server I own to a restricted client (that I also own) using a reverse ssh tunnel. I have a script that sets up the restricted client to middleman leg of ...
0
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2answers
59 views

Emacs ssh connection abbreviations [closed]

When connecting to a remote server via ssh in bash I use abbreviations in ~/.ssh/config file: Host aaa HostName aaa.ssh.myhost.com User user1 So I can connect to aaa.ssh.myhost.com, typing: ssh ...
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2answers
8k views

ssh to multiple hosts and run a command [duplicate]

How do I ssh into multiple hosts (e.g host1, host2, host3, etc) and cat /etc/fstab to generate report.txt?
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0answers
245 views

Reverse ssh-agent forwarding and unlocking remote keys with your local keys

So the following two things should both be possible to do with ssh the question is just how difficult they would be and I'm hoping someone can give me an easy answer. 1) Suppose I have several ...
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votes
4answers
9k views

What is the equivalent of telnet localhost 25 with ssh?

What is the equivalent of telnet localhost 25 using SSH ? Clarification : I would like to have an SMTP connection with a server using SSH, just like it can be done with a command like telnet ...
2
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1answer
262 views

SSH Authentication Mechanism

Doing a personal research project and I'm wondering: Why does SSH do its own mechanism negotiation rather than use SASL? At first I thought it might be to ensure confidentiality of the whole session, ...
3
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2answers
1k views

Application deployment over ssh

My job requires frequently updating versions of Centos-compiled software on customers PCs over multiple ssh hops. Recently this got to the point of unmanageable by hand. What software can be utilized ...
3
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2answers
367 views

Is there a way to configure vim to run external commands through cpanel jailshell?

I'm editing files in vim over ssh, and I'd like to save git commits and things by running external commands in vim, like :!git add % && git commit -m "update" but because my server (hostgator) ...
0
votes
1answer
169 views

Making a Icecast Playlist from the Console

I got HP 6G RAM laptop that use as a home server, and a netbook that i use as my everyday console. I recently installed icecast server on the server as playing audio files on the netbook halts my ...
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2answers
579 views

Always look up non-FQDN domains as .example.com?

When I connect to the company OpenVPN they don't push their DNS to my computer, which means I have to type the FQDN for the hosts I e.g. SSH and HTTP to. Question Is it possible to configure my ...
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3answers
5k views

Why do 'ssh host echo $PATH' and printing the $PATH after ssh'ing into the machine give different results?

On a particular host, when I ssh into the machine and enter echo $PATH I get /home/wxy/bin64:/home/wxy/bin:/usr/kerberos/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/bin:/usr/bin and if I ...
0
votes
2answers
8k views

SSH tunneling: connect_to localhost port 22: failed

I want to connect from my computer to a remote computer using a middle server(u port forwarding). I run this command on remote computer: ssh -R 9300:localhost:22 user@middleserver and this one on ...
0
votes
1answer
133 views

How to control desktop applications over SSH

Assuming that the wife is right now using our desktop Kubuntu machine, probably surfing the web in Firefox or using Digikam. After logging into the machine via SSH, what can I do to 'pop up' little ...
2
votes
2answers
14k views

can't ssh into remote host with root, password incorrect

I have a remote host, previously I can ssh into it with root and password ssh root@remote_host or I ssh into it first using a regular user account ssh esolve@remote_host and then su root and ...
10
votes
4answers
2k views

How do I trigger autocomplete without a tab key?

I'm ssh-ing to my machine using my iPhone with an app called ServerAuditior. It doesn't have tab key. See screenshot. How do I trigger autocomplete without the tab key? I don't want to type a lot of ...
0
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1answer
3k views

Nohup process not running into ssh

I have a question on the use of nohup in an ssh session. During more than three years my java software executed the following command daily using a remote ssh session: cd some_path; chmod 777 script....
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vote
2answers
3k views

Shell hangs when doing command from ssh

I'm trying to automate a server update process. What this should do is check for git diff files and list them, to later be copied from one place to the other. Here's my script on my local machine: ...
6
votes
1answer
3k views

My reverse-ssh tunnel is using keepalives but they're not helping

I have an ssh client machine picard behind multiple unreliable internet connections - all with NAT. I have my server time, reliable with a static IP. I want to be able to access picard thorugh time. ...
3
votes
1answer
4k views

Ssh to a box, run a command, output data to a file, then move on to the next IP adress [duplicate]

I want to run a script from my Jump server, have it SSH to a server, then run a command (like rm <file>, top or ls -lsa) then take that output and put it in to a file on my Jump server then move ...
7
votes
1answer
769 views

Why ssh does not turn terminal title back?

As you might know, when you ssh to a server from an X terminal (rxvt, gnome-terminal...), ssh changes the window title to reflect user@host, but it does not change it back. There are many tips how to ...
2
votes
1answer
333 views

How to prevent ssh-agent from starting in CentOS?

How do I stop ssh-agent from starting when logging into CentOS via openssh? There are no references to ssh-agent in my bash startup scripts (.bashrc) or /etc/bashrc.
4
votes
1answer
2k views

Why wget does not work via ssh tunnel? What does proxy prevent ssh-client to do?

To test things I'm trying to establish a local ssh tunnel from my laptop to a site via ssh-server, and download a page of the site (or view it in a browser). The tunnel is made like this: $ ssh -L ...
6
votes
1answer
7k views

apt-get via ssh-tunnel if only port 22 is allowed

I have a server which has only access to the outer world via port 22 (for the use of ssh from the server to other computers). I want to install some packages via apt-get on this server. Can I achive ...
17
votes
2answers
4k views

Can I unfreeze bash or vim when SSH session freezes from timeout? [duplicate]

When my SSH session times out, the whole terminal freezes. Is there any way to break out of that connection? CTRL+C doesn't cut it.
2
votes
2answers
823 views

Getting internet to Linux VM without being detected by Network

I'm trying to get internet to a Linux VM (Backtrack 5 on VMWare Workstation). Unfortunately I was told to not "bridge" the connection from the VM because it could be detected by our companies network ...
0
votes
5answers
8k views

SSH login attempts per minute per IP

How can i limit SSH login attempts per minute per IP ? I want to disable login attempts during 5 seconds after a failure. Is this possible ? I'm not talking about ban a user after parsing logs like ...
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vote
2answers
3k views

How to change search result highlight in vi?

The scenario: I log on a server using ssh, and search for keywords in a log file using vi. The problem: at the moment, the results of a search is only highlighted by a cursor _ below the searched ...
0
votes
0answers
32 views

Spurious “command not found” [duplicate]

I am in the process of trying to build and install pjsua on my embedded board running linux with a kernel which is a variant of 2.6.18.. The board is booted via nfs from my filesystem. I have built ...
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vote
1answer
1k views

How to log SSHD failed logins with usernames under OpenBSD 5.3?

Since DYNDNS became a payed service, I found a solution to dynamic IP address problem: OPENWRT router side (dynamic IP, this line is in the CRON): echo close | ssh LOCATION@SERVER -p 22 > /dev/...
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votes
1answer
8k views

ssh-agent forwarding for a Vagrant VM

I'm currently looking at setting up a Vagrant environment on my Mac machine, so that I can run vagrant up and it will then install rbenv and ruby and all I need. Then I have a Bash script that will ...
0
votes
1answer
224 views

Iptable rule to ssh over the internet

I've a server abc.example.com and a remote desktop zzz.example.com. I'm using SSH over a custom port, say, 6789. Whenever my firewall is off, I'm able to connect to the server successfully. But, as ...
2
votes
3answers
2k views

How to automate connecting to multiple network devices, running a command and saving the output to a file?

I have to run a command on around 1000 network devices and save the output to a file. In a file I have a list of all the network device names that have to be connected to using SSH. I then have to run ...
1
vote
1answer
1k views

How can I mount a remote sshfs directory of an publicly inaccessible server on my inaccessible client machine?

This is an extension of the question by @Andrei How to mount remote SSHFS via intermediate machine? Tunneling? I'm in the same situation that I want to mount a remote directory, however the ...
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votes
2answers
2k views

Push local git repo to server via ssh

So I have a local repo and a server with git installed and a git user. I want to send (push) the repo to the server. When I simply login to the server via ssh I have to specify my .pem file and a ...