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 can I do ssh or scp without restarting the sshd service

I had a problem related to ssh about a week back -- Ssh/Ping Problems in Mac Yosemite through wifi but not ethernet. I was able to solve the problem. However, now I am facing another problem, where I ...
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30 views

Unable to setup OpenSSH server on Ubuntu

I have been spending the last 4 hours trying to get my VNC connection to work. Eventually, I realized it was because my Ubuntu remote host was unable to host SSH connections- even though I had already ...
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1answer
57 views

SHA256 ssh fingerprint given by the client but only md5 fingerprint known for server

When connecting to a new/unknown server (with recent OpenSSH) like: ssh example.com You get the fingerprint like that: The authenticity of host 'example.org (192.0.2.42)' can't be established. RSA ...
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1answer
35 views

sshd_config for denying login attempts but with an exception

Summary I am trying to have sshd_config configured such that it rejects any login attempts for a specific user "foo" from source IPs starting with 10.0.0.*. However, I now need to make an exception. ...
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16 views

Creating new user on OpenSSH windows

I installed OpenSSH for windows (2003 server edition), and tried to generate a new user on an OpenSSH server (on which I already managed to log myself on) for a software use purpose, with a password. ...
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2answers
58 views

Unable to connect to SSH after generated public key and private key

Can some one help ? I have installed openssh (version OpenSSH_6.8p1) in windows 7 and I have generated the public and private keys, however I'm not able to connect to that SSH. I'm getting an error ...
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38 views

unable to ssh after generated public and private keys in windows 7

Can some one help ? I have installed openssh (version OpenSSH_6.8p1, OpenSSL 1.0.2a) in windows 7 and I have generated the public and private keys, however I'm not able to connect to that SSH. I'm ...
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1answer
51 views

SSH Server Not Responding To Connection Request

I'm attempting to set up an SSH server on my local machine using OpenSSH. When I try to SSH from a remote host into my local SSH server, the SSH server doesn't respond and the request times out. I'm ...
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24 views

How does sshd under cygwin authenticate?

I know very little of Windows yet I have to work with a Windows server. The only way to make this bearable is with Cygwin and sshd. I have installed and configured sshd but I don't really understand ...
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23 views

SSH automatic login works but showing error after logging in. What does that mean?

$ssh -v server_name OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to server_name [IP_ADDRESS] port ...
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3answers
78 views

SSH Private Key Authentication Failing

I'm kind of stuck here.. I am trying to disable all SSH login capabilities of root. No password login. No key-based login. Nothing. I have a user "andrew" that should only be able to SSH into my ...
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2answers
145 views

Permission denied (publickey,password)

I am trying to connect to local ip via SSH from terminal. Command is ssh -v user@192.168.0.2 But it is not connecting. Keeps giving me the error "Permission denied (publickey,password)." I have ...
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2answers
78 views

How do you convert an SSH private key to a .ppk on the Windows command line?

I have generated a key pair with ssh-keygen. I now want to use the same key pair with PuTTY-based applications. Because I'm working in a CLI environment, I want to convert the key to the .ppk format ...
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2answers
101 views

SSH Tunnel doesn't work

I use following command to make a ssh tunnel to my ubuntu server: ssh -fNg -L 8888:127.0.0.1:22 -p 1000 username@server-address -v Then I set OSX http and https proxy to 127.0.0.1:8888 And I got ...
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2answers
35 views

Log Commands Run Over SSH on Client Side

I am looking for a way to run SSH (OpenSSH in particular, but not necessarily) and log all commands that I run against the remote, to a file locally. Running each command as an independent ssh ...
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1answer
59 views

Something I'm not “getting” about SSH keys: OS portability (Mac to Windows, etc.)

Let's say I create SSH keys in a Mac to connect to my remote server. My server has my public key. My Mac has my private key. So far so good. A few days later, I want to connect to my server by ...
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11 views

Can ssh with console but get timed out with MATE/Nautilus

I have a Debian virtualbox with i plan to use as a dev server. But when trying to open a network with Mate i get timed out. Works fine via the CLI (but i DO have to specify the port even if its the ...
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1answer
36 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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1answer
67 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 ...
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2answers
38 views

Connecting two separate SSH connections together

I'm working on a small project and looking for some advice on how to make a portion of the project work. Goal - join two separate ssh sessions together. I want to see if keys used to login to bastion ...
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38 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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1answer
43 views

How can I SSH from Hong Kong to China?

Me in Hong Kong, girl friend in China. I have installed SSH server on both computers. When both computers were in Hong Kong, I connected both to the internet (via my internet connection at home), ...
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1answer
35 views

Rsync ask for password even though I can SSH in without a password using a key

This is the command I'm using: sudo rsync -rvz -e 'ssh -p 1111' ******@111.111.111.111:/home/sql/ /media/disk1/bd92a143-c4d7-4b70-bb6a-6576678fa96b/user/Backups/sql/4-6-2015 Any advice?
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1answer
200 views

ssh -o PreferredAuthentications: What's the difference between “password” and “keyboard-interactive”?

Both PreferredAuthentications=password and PreferredAuthentications=keyboard-interactive would prompt for the password, so what's the difference between them? I Google'd with the keywords ssh ...
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1answer
27 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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1answer
36 views

custom message ssh “ssh_exchange_identification: Connection closed by remote host”

Usually I am blocking hosts with /etc/hosts.deny. When restricted host trying to connect to the sshserver user gets following message "ssh_exchange_identification: Connection closed by remote host" ...
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1answer
129 views

passwordless ssh works for root but not for other users

I did the following for both root and orainst users, I have added id_rsa.pub of first machine to the authorized_keys of the second machine I have 700 permission on .ssh folder passwordless ssh ...
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0answers
44 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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2answers
70 views

SSH ignore global config

I want SSH to ignore the global configuration file in a shared user environment where I do not have control over system-wide configuration since there are settings which conflict with my expected use ...
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2answers
64 views

Can't install openssh under ubuntu 14.04

I am just trying to install openssh-client and openssh-server on my Ubuntu 14.04 machine. When I do sudo apt-get install openssh-client I get the following: http://pastebin.com/YJp04iin (I ...
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1answer
66 views

ssh session timeout using openssh client

I have a system which I can reach via ssh. I can reach it from a windows PC using putty and from a ubuntu system (Ubuntu 14.04.2 LTS). When I connect with putty to the system and doing the following ...
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2answers
69 views

SSH Server Not Visible to the Public Internet

I have OpenSSH Server installed on a Ubuntu (Server) 14.04 machine. I can connect over my local network but cannot across the Internet. I have port forwarding set up on the router. I have tried: ...
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1answer
69 views

Can't connect with OpenSSH sftp with custom port

I am using Cygwin on Windows 7. I have installed OpenSSH client and i am using it connect to Ubuntu server installed on virtualbox through localhost. I am connecting through ssh with this command: ...
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131 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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1answer
1k views

How can I find a list of MACs, Ciphers, and KexAlgorithms that my openssh client supports?

Is there a way to make ssh output what MACs, Ciphers, and KexAlgorithms that it supports? I'd like to find out dynamically instead of having to look at the source.
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1answer
48 views

Disabling ECDSA

Guys I've just installed ArchLinux on my Cubieboard, but I can't connect via ssh to the target. Problem is in encryption. Putty and a SSH client on my Android device doesn't support the algorithm. So ...
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1answer
51 views

How can I force SSH to ignore the IdentityFile listed in “Host *” for one specific host?

My SSH config file is set up to use a specific IdentityFile in the Host * section as the default key. For one particular host, I want to offer a different key (and only that key, never the default ...
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1answer
43 views

Password less ssh AIX Linux

I tried to configure password less SSH from AIX to Linux. I executed the command. scp .ssh/id_rsa.pub root@10.170.163.74:/root/.ssh/authorized_keys When I execute the command and try to connect ...
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1answer
119 views

SSH jump hosts error

I have trouble understanding a peculiar behavior of ssh jump hosts. I have these configurations in my ~/.ssh/config: Host bastion-server Hostname server.bastion.com ForwardAgent yes User user ...
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1answer
47 views

an ssh subsystem that does ls

Normally you create a subsystem by doing Subsystem vim /usr/bin/vim or something like that. So how would I do a subsystem that did ls -la? ie. you call the ls subsystem, it gives you an ls and then ...
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1answer
47 views

Interactive program ignores keystrokes on a CygWin OpenSSH Server

I am running Windows 7 SP1. I have installed CygWin with OpenSSH, so now I have a running SSH Daemon that seems to be working OK, except for a problem with an interactive command-line program that ...
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0answers
75 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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1answer
116 views

openssh server not able to root login

I have root filesystem(compiled using Buildroot). I start openssh server by executing /usr/sbin/sshd. /usr/sbin/sshd uses /etc/sshd_config to configure itself . The parameters enabled in ...
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2answers
168 views

SSH config host match port

I have a server that has multiple "SSH daemons" running (actually Stash and OpenSSH), with different SSH keys needed for each. These daemons are listening on 2 different ports. In the SSH config on ...
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68 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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1answer
22 views

unable to use ssh-1 despite protocol being 2,1 in sshd_config file

When I do telnet localhost 22 I get SSH-2.0-OpenSSH_6.6p1 Ubuntu-2ubuntu1 back. Since my sshd_config file has Protocol 2,1 in it (vs Protocol 2) shouldn't I be getting SSH-1.99-OpenSSH-6.6p1 ...
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1answer
41 views

OpenSSH server refuses to accept key authentication unless logged into server locally

My server is running Ubuntu-Server and ahs OpenSSH-Server installed on it. I set up the /etc/ssh/sshd_config file to accept and require rsa keys, it looks for keys in the 'AuthorizedKeys ...
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0answers
105 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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1answer
143 views

Accessing mysql behind firewall with ssh port forwarding

I have an architecture which looks like this: | - DMZ - | ________ | ________ | _______ | CLIENT | | | SERVER | | | MYSQL | |________| | |________| | |_______| ...
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273 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 ...