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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2
votes
3answers
42 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 ...
6
votes
1answer
561 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 ...
34
votes
7answers
11k views

Is there a way for one SSH config file to include another one?

In case it matters: OS: Ubuntu 10.04 SSH: OpenSSH_5.3p1 Debian-3ubuntu5 I'd like one SSH config file to include another one. The use case would be to define whatever I want in my default ...
11
votes
6answers
33k views

How to SSH to localhost without password?

EDIT: Putting exactly what was done. I need to SSH to localhost without a password, the usual way of doing it (with public keys) do not work. user@PC:~$ rm -rf .ssh/* user@PC:~$ ssh-keygen -t rsa ...
-1
votes
2answers
55 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 ...
2
votes
3answers
5k views

SFTP ChRoot result in broken pipe

I have a website that I want to add some restricted access to a sub-folder. For this, I've decided to use CHROOT with SFTP (I mostly followed this link : ...
0
votes
1answer
26 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 ...
0
votes
2answers
41 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 ...
1
vote
2answers
45 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 ...
0
votes
2answers
33 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 ...
-1
votes
1answer
87 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 ...
2
votes
2answers
3k views

Cygwin OpenSSH closes immediately after a connection

Trying to connect to cygwin-sshd using putty or cygwin ssh on localhost, here is all I get. I have it working fine on a different Win7x64 machine but this one is proving hellish. Config files for ...
2
votes
1answer
54 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 ...
0
votes
0answers
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 ...
3
votes
1answer
32 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 ...
3
votes
1answer
41 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 ...
17
votes
8answers
30k views

Why does the “password” prompt take forever when I SSH into my Ubuntu 9.05 server?

Answer: It was, in fact, performing reverse DNS resolution. Based on the suggestions below and this article, I added "UseDNS no" to my sshd_config, rebooted ssh, and now the password prompt displays ...
14
votes
3answers
3k views

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 ...
1
vote
2answers
33 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 ...
1
vote
1answer
29 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?
0
votes
0answers
22 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 ...
0
votes
1answer
40 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), ...
57
votes
8answers
109k views

Remove key from known_hosts

I built several virtual machines during the last few weeks. The problem is, the .ssh/known_hosts gives me the Man in the middle warning. This happens because another fingerprint is associated with the ...
2
votes
1answer
88 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 ...
0
votes
1answer
34 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" ...
0
votes
0answers
41 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 ...
2
votes
2answers
52 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 ...
0
votes
1answer
61 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 ...
4
votes
3answers
4k views

Configure OSX Firewall to Allow SSH Server?

If I turn on my OSX firewall, ssh is disallowed. If I turn it off, ssh can connect just fine. These are the settings from the ssh host: while I don't know what I'm doing, I figured that giving ...
0
votes
2answers
53 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 ...
5
votes
2answers
5k views

git pull does nothing / git push just hangs / debug1: expecting SSH2_MSG_KEX_ECDH_REPLY

I had an issue in ubuntu 13.10 and 12.10 where attempting to connect to github (git clone / pull / push or anything) would fail with no output. I checked my /.ssh directory for config and any ssh ...
0
votes
2answers
62 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: ...
1
vote
1answer
58 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: ...
0
votes
2answers
139 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 ...
1
vote
3answers
168 views

Using OpenSSH on Windows for enterprise use

Is OpenSSH for Windows (using Cygwin) is considered to be robust & stable for enterprise use?
1
vote
0answers
108 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? ...
2
votes
1answer
518 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.
0
votes
1answer
35 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 ...
0
votes
1answer
39 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 ...
1
vote
1answer
35 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 ...
5
votes
1answer
5k views

ssh config under cygwin

I have Cygwin installed on Windows 7. I made default install. I would like to use ssh config file (~/.ssh/config) to set host and options for connecting. Normal ssh command is not able to find the ...
1
vote
1answer
84 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 ...
0
votes
1answer
38 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 ...
4
votes
4answers
6k views

Cygwin sshd did not start due to a logon failure

After a cygwin sshd install, sshd service fails with: Error 1069: The service did not start due to a logon failure I try to give cyg_server standard user and admin access. The error is the same ...
0
votes
1answer
42 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 ...
1
vote
0answers
65 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 ...
2
votes
2answers
465 views

How to use ssh-agent.exe without cygwin for pass-phrase protected private key?

I would like to access a SSH service with pass-phrase protected private key in Windows using ssh-agent.exe. So far I able to utilize ssh-agent.exe by changing environment setting in my home account ...
0
votes
1answer
102 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 ...
12
votes
7answers
34k views

OpenSSH server refuses to accept key authentication

I tried to use public key authentication on my new server, and I came across this problem. $ ssh -v -i .ssh/server 192.168.1.100 OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration ...
0
votes
0answers
55 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. ...