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

learn more… | top users | synonyms

2
votes
3answers
606 views

How to run a script after connected with ssh

I've heard multiple answers of rights and wrongs and I still don't know if its possible. I ssh to a server then want to run a block of script. while read server <&3; do #read server names ...
5
votes
4answers
219 views

History of IP addresses that accesed a server via ssh

It has come to my attention that a server of mine has been hacked and infected with a known chinese botnet. It was a prototype/testing virtual machine with its own static IP(US address) so no harm ...
2
votes
1answer
53 views

How to resolve ssh connection refused on AIX?

I am no longer successfully able to connect to my AIX LPAR. ssh -v user@<ip> OpenSSH_6.2p2, OpenSSL 1.0.1c 10 May 2012 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to ...
2
votes
1answer
10 views

ssh ControlMaster exceptions

Most ssh connections I make benefit from the ControlMaster being turned on, for example most of the connections I make over VPN. However, there are a few that don't, such as github. So I've got the ...
0
votes
0answers
34 views

sshd without pam slower

I am running OpenSSH_6.5 with UsePAM yes in my board. I have observed that with UsePAM no in /etc/ssh/sshd_config, sshd runs slower than previous case. How is this possible? My understanding is ...
2
votes
3answers
44 views

Configuring the default timeout for the SSH agent

I use ssh-add to add my SSH keys to the SSH agent. By default, it adds them indefinitely. There's a command-line option to specify a timeout, but is there a configuration file option which will ...
0
votes
2answers
28 views

ssh passwordless login not working on RHEL

After following this tutorial for setting up SSH pubkey auth, I cannot seem to get passwordless login to work, It always redirects me to the password authentication. As far as I am aware, I have ...
0
votes
2answers
34 views

Can't use SSH anymore after installing denyhosts

so I'm in a very tricky situation. I've installed denyhosts on my debian machine and suddenly I can't use SSH anymore. Hopefully I could still login through webmin, but with root, so I had to login ...
1
vote
1answer
310 views

Dynamic port forwarding using socat

I'm trying to replicate the functionality of ssh -D <PORT> user@machineX to tunnel all my traffic from my current machine via machineX. I do not need the ssh shell open at all, I simply wish to ...
60
votes
8answers
21k views

How can I disown a running process and associate it to a new screen shell?

I have a running program on a SSH shell. I want to pause it and be able to unpause its execution when I come back. One way I thought of doing that was to transfer its ownership to a screen shell, ...
0
votes
1answer
309 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 ...
5
votes
3answers
436 views

Run ssh login command without modifying remote .bashrc

We have a bunch of servers set up with set -o vi in their ~/.bashrc. It would be nice to be able to ssh into these boxes and automagically run set -o emacs as a timesave. I've seen a solution ...
5
votes
3answers
6k views

ssh input from text file

These two question is driving me crazy and I don't have good expertise of ssh. (but I suspect it is to do with redirection only) The questions are, You want to pass multiple lines of input from a ...
0
votes
2answers
36 views

which unix or linux command is used to change root password of remote machine(Just an IP address) without using SSH Login [closed]

which unix or linux command is used to change root password of remote machine(Just an IP address)? Suppose I just have an IP address of the target machine which is on my network, But I do not know ...
4
votes
2answers
1k 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 ...
0
votes
1answer
43 views

Getting more output from NetCat

Currently I'm using the standard netcat -e /bin/sh to provide a remote shell for other computers to access. The problem is however that this shell is rather terrible, since it has limited output. For ...
3
votes
2answers
414 views

SSH connection timing out

I am trying to connect to an external host that is living in the Internet. From my laptop I can ssh fine. From an Ubuntu 12.10 server, the connection times out. Since they're in the same network, ...
5
votes
2answers
1k views

XAUTHORITY environ variable set repeatedly on every login

I am running a Suse Linux 11.04 system. My problem is that when I do a fresh login into a shell as root, a new Xauthority file of the form xauth***** gets created in the /root/ directory. Upon exiting ...
1
vote
0answers
21 views

ssh-copy-id hangs with 8192-bit key

Having a bit of an issue with ssh-copy-id it seems to hang when i try to copy 8192-bit rsa keys accross to an OpenIndiana server. I running OS X as my client OS. Is anyone aware of issues with keys of ...
2
votes
1answer
37 views

Is it possible to have multiple SSH host aliases? [duplicate]

I have a laptop that can obviously be inside or outside of my home network at times. When I need to SSH into a machine inside of my network, the connection is fairly straightforward: localhost $ ssh ...
1
vote
1answer
101 views

xterm no longer starting as root user on RHEL6

I am totally stuck even after reading both this and this (if it isn't already obvious I don't have much experience with Linux.) I am trying to install WebSphere 8.5 on RHEL6. Everything was going ...
0
votes
1answer
32 views

SSH E-mail login alert if SSH port is as NAT

Can you help me with this problem please? How can I set e-mail alerting after SSH login when port 22 is NATed? I use Linux Debian 7. I have used these iptables rules: eth0 - external network, eth1 - ...
3
votes
1answer
30 views

How do I generate SSHFP records?

I need to setup SSHFP records in the DNS for my host. I have done some searching but I haven't found any good example. What are SSHFP records? What does SSHFP records look like? How do I create ...
1
vote
1answer
51 views

How can I start tmux automatically in fish shell while connecting to remote server via ssh

I switched from bash to fish shell. I liked it and decided to use it on my servers also. How can I start tmux automatically on ssh connection? I followed this instruction for bash but fish shell is ...
1
vote
2answers
62 views

Having ssh tunneling itself for remote access from a third machine [duplicate]

I am struggling with understanding if and how the following is possible. Say that I have a machine T (target) which I want to access from remote (ideally via ssh). T is behind a router/firewall R ...
0
votes
0answers
28 views

Mount a dropbox directory without installing the dropbox application

This is most likely to be a duplicate question, but I could not find a simple answer for my problem. My situation is as follows: I have multiple accounts on different computing clusters. I want to ...
5
votes
2answers
100 views

How to input a network file using scp to ffmpeg

My problem is this. I have access to a server that hosts many video files, most of them are very large and not well compressed. I intend to make a reduced quality smaller size copy of these on my ...
1
vote
0answers
17 views

libpam load pam modules at every connection

I want to reduce ssh connection time, by debugging sshd have found that libpam is loading all pam modules specified in /etc/pam.d/sshd file at every connection. How to configure/modifiy libpam such ...
1
vote
2answers
58 views

How to inject data at the beginning of a child process's stdin?

TL;DR How can I fix this command line template, which fails when cat (on the client side) contends with ssh prompting for a password? { echo some stuff; cat; } | ssh SERVER cat { echo some stuff; ...
1
vote
2answers
45 views

Can't access ssh in my VM Centos

My Cento's IP is diferent of the normal. And I cant access it in a ssh command And when I tried access using ssh noting I want to use ssh and samba client, but my IP is diferent. And I have ...
1
vote
2answers
34 views

How to log out of su and another user

So when I am logged in as a standard user in an ssh session and then su to root, how can I log out of both accounts with a single command? Rather than: root@host:/exit user@host:/exit something ...
2
votes
0answers
28 views

Unexpected “authenticity of host can't be established.”

Few months ago, I logged to server1 and scp files to server2. Now I want to do the same, but after the scp command I get message: The authenticity of host ... can't be established. RSA key ...
13
votes
3answers
10k views

How can I tell what version of linux I'm using?

Often times I will ssh into a new client's box to make changes to their website configuration without knowing much about the server configuration. I have seen a few ways to get information about the ...
1
vote
1answer
128 views

Does Public and Private key remain the same for a user or system?

I had requested access to a git repository and it was granted after I gave my public and private keys. ( generated using the common method ssh-keygen -t rsa which gave me : <user> @ ...
1
vote
1answer
45 views

ssh connection fails after login at one user

Have server with 2 users - (e.g. - user and root). SSH login to root works corrctly. But I can't login to user - it immediatelly fails with "write failed - broken pipe" after login. ssh -vvv ...
1
vote
1answer
63 views

For loop not getting executed correctly over ssh

I have a script in which I am reading from a csv file where it contains SourceIp, DestinationIP,Source Ports, Destination Ports. First I am reading the sourceIp and trying to do ssh over it (I am ...
0
votes
0answers
30 views

Dropbear SSH on Cygwin won't allow passwordless login

I am using Dropbear SSH running on Cygwin, on Windows 7, on a VMware virtual machine, on Windows 8.1. On my physical OS I have Cygwin and I am trying to get passwordless login using openssh on ...
1
vote
1answer
22 views

Best mechanism for logging in and uploading backup files

I have a server that I want to regularly backup. I create backups with encrypted tar using OpenSSL, and now I want to connect to my home server and upload my backed up files there. I need a ...
3
votes
1answer
50 views

Is it possible to remove “ssh://” from git remote's URLs?

I'm used to create some manually-made repositories to push code to my pet server or share code inside my company. I use the URL ssh://user@ip/folder.git to add as remotes to my workspaces. I was ...
10
votes
5answers
12k views

How to download a file through an SSH server?

I have a server in USA (Linux box B), and my home PC (Linux box A), and I need download a file from website C, The issue is, it is very slow to download a file direct from A, so I need download the ...
0
votes
2answers
198 views

SSH connections not accepted after configuring NFS?

I have a couple of servers in a VPC in Amazon EC2. One of them acts as a NFS server, and one of them as a client. I recently noticed a problem in the client that after a reboot, it would reject all ...
2
votes
4answers
173 views

Running bash script on a remote Windows Machine

I am planning to run a bash script on a remote Windows system from my local Linux machine. For this purpose, I will have to log in to Windows machine from the local one and then execute the bash ...
1
vote
0answers
25 views

How to automatically launch a lxc container on ssh connection?

I'm attempting to setup a system that automatically creates a new sandbox on a ssh login to use as a temporary jump box into my server. So to do this I was wonder how to setup lxc to spin up a new ...
0
votes
0answers
24 views

SSH into servers each with different subdomain over one IP [duplicate]

I have several Ubuntu VMs (bridged) behind a router that I want to access remotely. I've also got an nginx reverse proxy that handles the port 80 traffic like this: sub1.example.com -> server1 via ...
2
votes
1answer
91 views

SSH agent forwarding, multiple hop

I tested this setup with Linux origin machine - everything is the same - only the first hop can use keys from origin machine. Initial problem I'm trying to set up SSH agent forwarding with multiple ...
6
votes
3answers
1k views

Remote-Accesible Live-Distribution (aka Live CD)

I'm looking for a live distribution (Live CD or the likes) which comes - per default - with sshd running at startup. I want to check the components of my laptop whose graphics has died ...
4
votes
1answer
534 views

X client forwarded over SSH “cannot open display: localhost:11.0”

I have enabled X forwarding on remote machine where SSH server is running: # grep -i forward /etc/ssh/sshd_config X11Forwarding yes # On local machine, I have started SSH client with -X flag ...
1
vote
1answer
31 views

How can I tell which ports have been used for reverse SSH tunnels?

I have two machines, client and server. client has created a reverse-tunnel on server with something like ssh -R 12345:localhost:12345 server. When logged into server how could I find ports which ...
1
vote
1answer
36 views

Can SSH proxy requests from the remote system through my local system to the internet?

I have SSH access to a *nix system over a VPN. I need to install some packages from the distro's repos to that system but that system does not have general access to the internet to reach the repos. ...
7
votes
4answers
602 views

Is there a way to check a users SSH key to see if the passphrase is blank

I'm looking to lock down our Solaris 10, RHEL 5, and SLES 11.2 servers. It has come to my attention that some of the users have no passphrase for their SSH keys. Is there a way I can check for this ...