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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506 views

SSH: “no such identity”

I'm having a very peculiar problem getting SSH to work on my Linux box. I have a passwordless git user identified by an OpenSSH key. If I attempt to ssh into it from either the same or a different ...
3
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1answer
2k views

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 ...
3
votes
1answer
2k views

Can't write or download to SFTP on Ubuntu Server 10.04

I'm having a problem setting up SFTP with an Ubuntu Server 10.04 LTS x64. I use openSSH with public key authentication, I can login with SSH perfectly with the keys no problem. I can also connect to ...
2
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1answer
20 views

How to convert a ppk to an openSSH private key encrypted with a passphrase

When I exported my private key in PuttyGen, I assumed that the passphrase I set was also used on the openSSH version. I'm finding that the passphrase I put in isn't working. What's the right way to ...
2
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1answer
155 views

GIT via OpenSSH in Powershell is fine, so why can't I connect in plain cmd console?

when I run ssh user@servername01 ...under powershell it connects without a problem, however when I run the same command under a standard cmd prompt I am prompted for a password (no password is set ...
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1answer
210 views

Mass creating users who can login via ssh keys but not with a password

I am trying to mass creating users that can login via ssh private/public keys but which can not login with users (kind of like using newusers but I want to make sure users will not be able to login ...
1
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1answer
302 views

What ProxyCommand to use for ssh host-based authentication relay?

I have a host $HOST which I can (only) access by sshing to a host $BASTION and then, by host-based authentication, connect to with ssh $HOST. $HOST does not accept access by for example public-key ...
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1answer
107 views

Bash command substitution and variable issue

I am writing some simple backup utility in bash and any output must be in JSON. I am checking for host reachability and if any error occurs, I want to print it out. However, I have an issue with ...
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1answer
1k views

Forwarded connection refused by server: Administratively prohibited [open failed]

I sometimes use PuTTY as a SOCKS proxy, and I've noticed that sometimes, when the web-page I'm trying to connect to (from the web-browser) does not exist, and requires a prolonged timeout, the shell ...
1
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1answer
1k views

ssh localhost password-less Login not working

I have been trying to ssh localhost into the same machine. I copied the generated public key into the authorized_keys file. It still doesn't work. I have spent hours on trying to find a solution to ...
4
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0answers
446 views

SSHD Consuming 100% of CPU (Hundreds of processes) - Will not die

Recently I've noticed that SSHd on a few systems I administrate will start spawning unstoppable processes which will consume huge amounts of CPU. The syscall shows that the processes are all ...
2
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0answers
7 views

SSH key exchange configuration uncertainty

I'm currently configuring ssh on a server and reading trough several guides. Many feature a @url.tld after the option in KexAlgorithms like: KexAlgorithms curve25519-sha256@libssh.org This is ...
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0answers
461 views

git clone extremely slow using ssh

Originally I could do git clone using ssh at an acceptable speed. However my ubuntu crashed, so I reinstalled using the newest version 13.04. After I re-installed all I try to do git clone using ssh ...
2
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0answers
423 views

Launchd not launching ssh-agent after plist edit

I'm trying to reconfigure my ssh-agent to have a timeout via the -t argument. I edited /System/Library/LaunchAgents/org.openbsd.ssh-agent.plist <array> ...
2
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0answers
95 views

SSH through a tunnel or directly depending on the network I'm conncted to

Is it possible to "automatically" configure ssh to use a gateway to connect to a remote machine based on the client's IP address or something in the likes? Suppose I'm at my laptop, which I can plug ...
2
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0answers
567 views

ProxyCommand with sudo

I'm trying to set up SSH so that I can easily log into an server that is accessible only via a sudo to an intermediate server. From the command line, logging into it is of the form: sudo -u admin ...
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0answers
81 views

OpenSSH without password does not work Cygwin Windows 7

I've tried several ways to install openssh without password but it does not work. With password it works fine! (Cygwin, Windows7 32Bit) First I did it like execute ssh command without password? ...
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57 views

SSH Agent Forwarding not working even when using `ssh -A`

First of all, I've checked all the following Agent Forwarding not working Extra configuration required for ssh-agent forwarding? SSH Agent Forwarding Not Working ...
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0answers
140 views

Open SSH - issue logging in without password - public key

I'm having an issue where I'm unable to login by SSH - I've followed other guides and made sure permissions were set correctly, and that the publickeys on my local machine and remote machine match as ...
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0answers
234 views

XCOFF32 object files are not allowed in 64-bit mode while installing Crypt-SSLeay-0.65_02

I am installing a Perl package Crypt-SSLeay-0.65_02 in an AIX 6.1 system but while performing perl Makefile.PL getting the following error. The test suite can attempt to connect to public servers to ...
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0answers
261 views

Can I use a password ssh login on a passwordless windows 8.1 account? (Cygwin)

I recently installed Cygwin + OpenSSH (package) on Windows 8.1. However, I'm only using one passwordless Windows account on that machine, but I would like to login with SSH remotely with password (for ...
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0answers
313 views

OpenSSH on a Windows box using domain authentication: can't logon

On my windows 2008 box I just did what the steps said: mkgroup -d >> ..\etc\group mkpasswd -d -u username >> ..\etc\passwd In my passwd file, I see my user like it's been pulled in from the ...
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0answers
83 views

Configuring SSH server to require RSA key

I'm trying to configure my SSH server to require users to have an RSA key. To do this I have the settings in sshd_config set to RSAAuthentication yes PubkeyAuthentication yes #AuthorizedKeysFile ...
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0answers
69 views

how to simulate a file under linux?

I'm basically trying to do this using openssh: I have a private key, however it isn't in file (it's in memory). Now, I want to create the public key in openssh format. For that I would generally run ...
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0answers
134 views

Linux to Windows (OpenSSH) directory bindings

I've got OpenSSH working on a windows machine and have been able to successfully connect from Linux to Windows and vice-versa. I need to know how Linux paths are linked to windows while using scp. ...
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0answers
475 views

SSH server installation on windows

I'm working on a SSH project. For that I setup everything on client side. But I'm facing a problem on my SSH server. I tried some SSH servers like OpenSSH. I installed the OpenSSH server on my ...
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194 views

ssh: known_hosts forwarding

In running ssh with agent forwarding. This allows me to do hg/git pulls from my server from systems that I have been authorized to based on my local i.e ssh -A myserver hg clone ...
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0answers
9 views

pam_exec.so doesn't write password to script when expose_authtok is enabled

We are using PAM for authenticating with external radius server. We have the following line in /etc/pam.d/common-auth auth [success=6 default=ignore] pam_exec.so expose_authtok ...
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0answers
19 views

Doubled terminal emulation sessions renders foreground and background of characters the same color from the destination

I have some no graphics card (“headless”) server that I have to operate via the serial port as the console to install Linux, VMware, and other OSes. For a terminal server I use a Linux box with a USB ...
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38 views

Usage of ssh-agent with signed SSH keys

My ssh-agent doesn't want to store my credentials for Signed SSH key when connecting to a SSH server that use a SSH CA. I mean, each time i try to logon it ask me for the passphrase of the certified ...
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0answers
45 views

autossh random monitoring port

I have multiple reverse ssh tunnels and I am trying to grab a free random port for monitoring. The forwards work fine and in most cases, when there is a disconnect, it will automatically reconnect. ...
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0answers
96 views

SSH key verification fails when connecting for first time

I'm trying to connect and it fails to verify key. I have no problems when connecting by PuTTY. $ ssh -v xxx.xxx.xxx.xxx OpenSSH_6.0p1 Debian-4+deb7u2, OpenSSL 1.0.1e 11 Feb 2013 debug1: Reading ...
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219 views

Unable to SSH into freshly installed debian VM, “Permission denied, please try again.” error

I just set up a Debian 7 VM. I can ping my VM from host OS, which is Ubuntu 14.1, but can not ssh into VM. Here is the output of ssh -v EDIT: I am using virtulbox. I am not using any command line ...
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0answers
242 views

Ubuntu 14.04 ssh server hanging when connecting but pings works

I am running an Ubuntu ssh server with login and ChallengeResponseAuthentication enabled. However, the following command outputs this and hangs until timing out: ssh -vvv name@xxx.xx.xxx.xxx ...
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36 views

ssh-agent/ssh-add - how can I force confirmation by default?

I use ssh forwarding alot and I'm concerned about "agent hijacking", so, I like to use -c option when calling ssh-add, which enforces confirmation on every key usage. How can I turn the confirmations ...
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0answers
41 views

How to set-up and run Open SSH?

I just installed Open SSH. It's not very friendly towards me I must say. The program files directory contains several .exe files without even a readme file. So far, I didn't even figure out which ...
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0answers
40 views

Two different system having same internal ip address

I am not sure if I am posting this in right forum. If not, please let me know. The problem is that I have two notebooks, one with Ubuntu 12.04 and other one with Ubuntu 14.04. Both the systems are ...
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0answers
17 views

Supply ssh key without querying agent

In my ssh_config, I set IdentityFile and IdentitiesOnly yes and ForwardAgent no. ssh uses this key but it still queries the agent! But it shouldn't do that; I explicitely supply the key I want. The ...
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0answers
63 views

Unable to connect to Cygwin from Mac OS X by ssh

I've started ssh server on Windows 7 using Cywgin and I'm trying to connect to it by ssh from Mac OS X Mavericks. It fails with next error: ./ssh username@hostname -v OpenSSH_6.6, OpenSSL ...
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0answers
63 views

ssh_exchange_identification after few attempts

To help find diagnose a ssh issue with a gitlab server, I've written the following script #!/bin/bash while : ; do ssh -v git@example.com || exit 1 done After few successful iterations ...
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0answers
188 views

Android SHH tunneling through school Wi-Fi

Ok so I'll try my best to explain the situation at hand here. My school recently got a new web filter that blocks literally, everything. I can't use Google Drive or anything that I need anymore. Our ...
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0answers
85 views

Reducing OpenSSH session key size

I am running into severe performance issues using SSH/Rsync on a Synology NAS (model DS413j if anybody knows anything about it). Both the sshd and the rsync processes are taking 100% CPU on the NAS, ...
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0answers
101 views

OpenSSH over VPN (unable to bring up tun0)

I have a nerwork(10.1.2.0/24) where i connected OpenSSH server and OpenSSH client via a switch. I am following this guide: http://bodhizazen.net/Tutorials/VPN-Over-SSH/ I can successfully ssh to ...
0
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0answers
714 views

Configuring OpenSSH for Windows in Cygwin - can't leave blank password

I install OpenSSH in Cygwin under Windows 7 to install Hadoop. I had OpenSSH installed previously, but with a password. All attempts to remove password are failed, so I re-installed Cygwin. I want ...
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0answers
3k views

Running rdesktop via SSH Tunnel causes ERROR: Failed to open display:

I can use rdesktop fine on my Linux Mint (3.2.0-23-generic kernel) system like this : rdesktop IPAddress However, I'd like to run rdesktop through my OpenSSH ssh tunnel. I using the following: ...
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0answers
202 views

Connecting SSH with OpenSSH key

I have a CentOS 6 server and I want to connect to it with a private key. On Windows, I use PuTTY Keygen and paste the public key in my server, in .ssh/authorized_keys2 (also tried authorized_keys, ...
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0answers
54 views

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 ...
0
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0answers
846 views

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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0answers
80 views

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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0answers
369 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 ...