OpenSSH is one of the most popular implementations of SSH used today and available by default in many Linux and Unix-like operating systems.

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How to deal with ssh's “WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!”? [duplicate]

Possible Duplicate: Ignore known-hosts security in SSH for some addresses I often need to login to multiple remote stations that are just placed to the same static IPs for me. SSH complains ...
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Nohup over ssh won't return

I am trying to do [me@myPc]$ ssh me@server "nohup myBashScript.sh &" My goal is to launch the process on the server, and then immediately return. It is not working: The job is started on ...
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OpenSSH does not accept public key?

I've been trying to solve this for a while, but I'm admittedly quite stumped. I just started up a new server and was setting up OpenSSH to use key-based SSH logins, but I've run into quite a dilemma. ...
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how to disable SendEnv variables set in ssh_config from ~/.ssh/config

I couldn't find that anywhere so I'm wondering am I the only one hitting such issue. By default ssh on Red Hat and Debian at least has a ssh_config with SendEnv option passing LC* and LANG variables ...
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Mac OSX OpenSSH file Transfer not working

I'm currently trying to get a file on my school account from home on my mac using SSH. I have the hostname and I can get in just fine, but transferring files is like smashing my head into a wall over ...
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openssh in Windows 7, run ssh-add once for all cmd instances

I have installed openSSH as part of the latest cygwin distribution. My goal is to use the ssh-agent from native window console (cmd) in order to login passwordless in a various number of Linux ...
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Why is pasting into SSH so painfully slow?

Most of the time whenever I post reasonably large chunks into an SSH terminal, it will absolutely crawl through it at a rate of something like 1000 characters every 20 seconds; sometimes practically ...
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How do you set the HOME path with SSH on Cygwin?

I have a bunch of users that I'd like to set the default HOME directory for so that when they log into SSHD running on Cygwin on Windows Server 2008, they get set at a specific directory ...
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networking with ssh thru wireless

I am using Ubuntu 12.04 64bit on my desktop and my laptop. Have install openssh client and server on both of them. My desktop is connected to ADSL2+ Router TD-8840 with wired connection and has ...
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329 views

How to easily bounce arbitrary connections through known SSH server, to avoid port firewalling

I was looking for a method to connect to arbitrary SSH servers through a known SSH proxy, without having to hardcode those target servers. For example, let's say that I cannot access github.com from ...
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cygwin ssh shortcut on windows desktop

I have multiple servers that I need to remote into. I prefer Cygwin over Putty to do so. Anyhows - the process of opening my cool Mintty window and then typing the following commands takes too long. ...
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Generating SSH Keys on the Server

I have set up sshd on a Linux server and managed to log in via keys generated using ssh-keygen. However, I have made the following observation: When I generate the key pair on the client and copy the ...
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93 views

What is the highest SELinux privilege(role)?

I want to know what role is the highest role of SELinux. If I am mistaken, can anyone tell me what roles are available by default in SELinux?
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Convert ssh public key to gpg

I have someone's ssh public key and I want to encrypt a message with it so that he is the only one who can read it. However, a simple import with gpg --import doesn't work because the format is ...
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1answer
168 views

Having trouble logging onto my ssh server

I feel pretty dumb asking this but I have been working on this for a couple days now (on and off) and I cannot figure it out. I have just installed lubuntu on my machine and I can ssh locally onto it ...
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414 views

ASC key file, login on cent OS using WINSCP

My system admin given me a file with extension .asc. to loging to the Server, but i am unable to login , as WINSCP or putty says this key is in different format, is another tool like wnscp and putty ...
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openssh on Windows 7 server, putty displays “refused our key”

I installed openssh as a service with the help of cygwin using this tutorial I can ssh into localhost from cygwin. However, when I try to do this from putty, I get a "server refused our key" error. ...
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877 views

ssh localhost works, but ssh [external url of localhost] doesn't

I'm trying to work out how to ssh into a machine at work (it runs an RHEL-based distribution with OpenSSH 5.3). I have been given instructions on how to set up keys, permissions, etc., which have ...
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276 views

OpenSSH: Restriction on Local Port Forwarding for groups

I'm trying to restrict users who connect via ssh on a server (with OpenSSH) to do local port forwarding on certain ports only. I've found that setting the permitopen="address:port" option in their ...
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SSH remote login without password is very slow

SSH Client - Mac OS X Lion SSH Server - Debian /etc/hosts on Mac -> [IP of Debian] mydebian Public key of Mac has already been put to authorized_key in root@mydebian:/root/.ssh 'UseDNS no' has been ...
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607 views

SSH hangs on exit with background jobs - inconsistently

On different Linux boxes, I see different behavior with respect to SSH sessions hanging on exit when there are background jobs running. If I do exactly the same thing $ for f in 1 2 3 4 5; do echo ...
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I get a permission denied (public key) when I try to scp in ssh

I can login to the remote server via ssh and navigate through it's file system, but as soon as I try to scp a file from the server to my laptop I get an error message. Example: user@server:/file$ ...
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ssh-agent and ssh-add

Does anyone know how to make it so that I don't have to add my keys manually using ssh-add? Every time I log into my Ubuntu server box, I have to start the ssh-agent and then use ssh-add before my ...
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What's the principle behind OpenSSH subsystems (or command= option)?

In OpenSSH one can declare a subsystem in the configuration file (/etc/ssh/sshd_config) or force a command such as svnserve to be executed by including this in the authorized_keys line for a ...
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Is it better to run OpenSSH in cygwin or freesshd (on Windows Server 2003)

I found an article on Petri that explains how to install OpenSSH to Windows via cygwin. I know that OpenSSH is basically the standard SSH server for *nix distros and was wondering if that means it's ...
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sshd_config AllowUsers Should Root Be Allowed?

I am asking here as i do not want to get locked out of my server. I do not want to allow root login to ssh, however if a user enters a "su" command i want them to be able to become root. So do i ...
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Why would anyone install openssh-client instead of openssh-server? [closed]

I installed openssh-server on two pc's. I can connect from both from the one to the other. So if openssh-server sends as well as receives ssh, why would you install the openssh-client, just to make ...
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Switching user in openssh using PAM

I'm trying to write a PAModule which will use compare the inserted username against a file. If the username exists in the file, it will change the username to root (since the username does not really ...
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sshd refuse connection?

For some reason I cannot access from my vitrual machine my remote virtual server at a server farm and instead it gives me this error message: OpenSSH_5.9p1, OpenSSL 1.0.0g 18 Jan 2012 debug1: ...
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How to reduce latency with openssh?

I'm ssh-ing to a server several thousands kilometers away, and every keystroke takes 500-800ms, so it is getting annoying. Is it possible to have my ssh client cache each line I type locally and ...
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271 views

Forwarding X through 2 servers (4 boxes involved)

I'm trying to run a web browser on my desktop machine at work but display on my local laptop. To connect via ssh, I need to go through 2 servers. A: Laptop wanting to display browser that runs on ...
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ssh using certificates — can you rename id_rsa file?

When using certificate authentication with ssh, the instructions I have found indicate you should create a key-pair as id_rsa.pub && id_rsa. The public key is then sent to the remote system ...
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OpenSSH Server won't start on Windows 7

I have followed this example to setup an SFTP server on Windows 7. I have done this before on XP and it worked a treat, and the process seemed to go OK on Windows 7 but now I can't get the OpenSSH ...
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How can I set up a “remote pair-coding” environment linux to linux?

I did some research on how to enable a pair-coding environment remotely so someone else on their MacOx/Linux box could view my screen (I code using vim + the rails plugin). I read Evan Light's blog ...
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Can only ssh into Ubuntu 12.04 alpha machine when logged into console

I recently installed the latest Ubuntu 12.04 64bit alpha (2?) onto a VMware virtual machine in order to check things out. One strange thing I've encountered is that I can only successfully ssh into ...
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Small delay while connecting to virtual SSH (residing on the same machine)

I have set up a virtual machine - Debian 6.0.4 - on my Windows 7 host OS. I use VirtualBox as software. Recently I have started to play with ssh but I have noticed that when I login to the virtual ...
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What is a GPG with “authenticate” capability used for?

GnuPG subkeys can be flagged with three kind of capabilities: Sign, Encrypt and Authenticate. While the first two actions are widely used and documented, the authenticate action is somehow ...
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How to diagnose proxy over ssh?

Recently I've tried to set up proxy using ssh -D 2454 username@servername (to browse the Internet through ssh tunnel), but failed to do this correctly. I would be happy for any suggestions and/or ...
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strange permission error involving ssh, Cygwin, Windows 7, and .sh files

I am new to Cygwin, ssh, and messing with file permissions and have a problem. On computer WORKER1, I am attempting to ssh into computer WORKER2 and then running a .sh file on WORKER1 from there. From ...
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SSH: completly disabling password authentication

is there a way to disable password authentication completely? The command line is the following: ssh -o KbdInteractiveAuthentication=no -o PasswordAuthentication=no machine" it STILL asks for a ...
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549 views

Execute command/script after file transfer

I've configured a server (Ubuntu) with OpenSSH for file transfer via sFTP. The requirement is that after a file transfer, a mail is sent confirming the file was received by the system. How would I do ...
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ssh connecting timeouts from a to b, but works from a to c, and c to b

I am scratching my head here. I now get timeouts between hosts A and B, both running Ubuntu, with some firewall NATing on either side and a good dozen hops in between. (To clarify based on the first ...
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187 views

ssh_exchange_identification: unprotected port

I wanna login a guest minix system resides inside VirtualBox through ssh and receive the error ssh_exchange_identification: Connection closed by remote host. After turn on the verbose flag, the ...
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261 views

ssh to Windows server sitting behind Linux firewall

I have been looking everywhere and still can't get an answer. I am sorry if this is a re-post somehow. I Have a home network setup as follows: OUTSIDE -> Linux Firewall/Gateway -> Windows Server I ...
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368 views

SSH Port Forward 22

I'm trying to set up the following: At work I want to create a local port that will forward to port 22 on my home server. ssh -L 56879:home:22 username@home -p 443 right now I'm testing this on my ...
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OpenSSH public key structure

Let's say that my username is user and my computername is cmp. I notice they are also part of my SSH public key: (they are last, scroll right) user@cmp:~/.ssh$ ls config id_rsa id_rsa.pub ...
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Automatically reconnect interactive SSH session

What's the best way to automatically reconnect an interactive SSH session to re-establish the shells on terminals? I looked at autossh but that seems to be dedicated to port forwards (which I do not ...
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Make msysgit work with cygwin ssh?

git-upload-pack errors occur when sshing into cygwin. sshd in cygwin does not take paths from .bash_profile as expected in a *nix environment. What is the way to remedy this and make msysgit work ...
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How to get SSH working on Linux laptop?

I recently became interested in SSH, and so I attempted to set up a SSH server on my Linux laptop. I am running moonOS, a version of Ubuntu with the Enlightenment WM. First of all I ran "sudo apt-get ...
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SSH weird behaviour if user not logged on physical server

I have a strange issue with my ssh server. If I start my home server, then login through ubuntu with my account (I only have one account) everything works fine, I have no problem to access the ssh ...