General :: SSHd Not Running On Ubuntu 10.10 VM?
Oct 14, 2010
I have just built my first ever Linux desktop, using VM Ware and it is running Ubuntu 10.10. I wish to try and use SSH to contact the machine but I don't believe the SSHD is running.
I have done a grep for SSHD shows nothing and have checked the Synaptic Package Manager and can see an openssh-client version 1:5.5.p1-4ubuntu is currently installed.
On Solaris, you can start SSH by typing /etc/init.d/ssh start but when checking /etc/init.d on Linux, there is nothing in there called SSH so am unable to restart it.
I just want to have the SSH running on the machine.
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Mar 13, 2011
I have been trying for weeks to solve this one and have researched everywhere I know to look. Nothing has helped. I am trying to ssh to my other machine (machine1=galla, machine2=cachin). Both run Maverick Meerkat 10.10. I get the following error when trying to ssh to galla:ssh: connect to host galla port 22: Connection refused
uname -a outputs:Linux galla 2.6.35-27-generic #48-Ubuntu SMP Tue Feb 22 20:25:46 UTC 2011 x86_64 GNU/LinuxAlso, sshd does not stay running. I can start it, but a ps tells me it is never running. I imagine herein lies the problem. But why won't it stay running?I am not running any firewall on galla (iptables -L told me that).P.S. I can sucessfully ssh out of galla to cachin. And, even if I just try to ssh localhost on galla, same thing happens.
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Aug 10, 2010
I setup my old laptop for my mom with F13 and have sshd running. My dad set up their DD-WRT router so that it's forwarding port 22 to the laptop's ip address. Yet, I get "No route to host" when I try and ssh in from my house. Is there anything that would be preventing F13 from accepting the SSH connection?
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Mar 28, 2010
Quote:
Code:
I've used these commands to generate my new keys and immediately got my sshd server running.
However, I now have the problem where the password is not being recognized and is repeatedly asked for.
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May 17, 2011
How to separate sftp and ssh and run on different ports.
i.e.
a) sftp on port x
b) ssh on port 22
I searched from the web and there are no detailed instructions. They suggested something like separating sshd_config into two files (file A and file B) and run two instances. Each instance points to its configuration file.
However, they didnt write down the detailed procedure of:
a) how to modify file A and file B (i.e. which line should insert specific commands)?
b) how to run two instances?
c) how to point each instance to its config file.
I am using Linux CentOS and the latest open-ssh.
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May 27, 2010
When I signed up for my Debian Linux VPS hosting and first logged on and invoked ps, there was the only user process running: sshd. As I can see, this was minimal Linux with only two things installed and configured: sshd and apt (plus all dependencies, of course).
I want to build (or use existing) similar Linux distro, any advice on how to build (or pick) one? Googling "minimum linux", or "linux with sshd only" usually brings up Debian's netinstall, which is not what I want.
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Mar 11, 2011
Whenever I login to a certain server using SSH I get a very long delay before a prompt appears. Everything I looked up on this issue says that it's a DNS issue and that I should disable reverse DNS lookups on the server.
But, the remote server is a shared webhosting server. I e-mailed the sysadmins but they say they have no DNS issue and that they won't change the server configuration. So, how can I fix this issue from my side (client side)? I have a static IP address and a hostname that points to it.
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Aug 23, 2011
I'm running Ubuntu 10.4 and I've tried disabling IPv6 as I don't currently need it. I rand the following to disable IPv6 and then rebooted my server:
echo "#disable ipv6" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.all.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.default.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
echo "net.ipv6.conf.lo.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
After the reboot I can see that IPv& is disabled by running:
cat /proc/sys/net/ipv6/conf/all/disable_ipv6
On running netstat -antlp i see that most of the IPv6 applications have closed but SSHd keeps running:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:9090 0.0.0.0:* LISTEN 663/java
[Code]....
Ho can I close the SSH daemon on port 22 of the IPv6?
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Jul 18, 2011
I'm trying to figure out why my industrial appliance (x86, running kernel 2.6.21.7 and OpenSSH_4.3p2 / OpenSSL 0.9.7m) accepts ssh connections without asking for a password (even for root)!When I log on to the local console as root I have to enter a password but strangely this prompt won't appear using a ssh connection (although I'm not using any client certificates).Of course that not acceptable but I just can't find the related configuration entry to disable this "password-less" authentification.Is this related to the sshd or has it something to do with the PAM module?
- Update ->
While looking at /var/log/secure, I've found the following lines:
Jul 18 16:55:07 localhost sshd[5712]: Accepted none for root from XXX port 6393 ssh2
[code]....
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Jan 12, 2010
How i can configure sshd to connect ONLY with Public Key Auth?
currentStatus : If you have no key. then you can log in with your password.
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Oct 5, 2010
In centos 5.3 i am unable to start sshd service shows error starting sshd :/etc/init.d/sshd:line102"7182 illegal instruction $sshd$ option
Same error while starting the httpd service.
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Aug 11, 2010
I cannot ssh into an RHEL 5.5 server (192.168.20.104) from another RHEL 5.5 server (192.168.20.101) unless server debug is turned on 192.168.20.104, and even then, I have to wait several minutes before the connection is established. scp to and from the 104 server is also not working.Here is the debug output on the 101 server when server debug is not enabled on the 104 server-:
Code:
[applmgr@tclg-clone-01 ~]$ ssh -vvv 192.168.20.104
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
[code]...
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Jul 26, 2010
I presume there is something in the JWM window manager - or Puppy Linux Lupu 5.01 itself that is conflicting with the normal loading of GMPLAYER....
I would like to know how to troubleshoot, and fix this problem if possible (even a workaround would be great).
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Jun 25, 2010
The system in question is using Mint 9, but the forums there aren't as active and since its Ubuntu based I didn't think it would be a concern bringing my problem here. If this is an issue, apologies, lock the thread and I'll head over to the Mint forums.So I have an SSH server running on the system, but I only like to have it running at certain times, so I removed it from the rc scripts using the command: sudo update-rc.d -f ssh remove.
Anyway, later I found that SSH was turning on at boot time anyway. I checked the rc scripts manually and couldn't find reference to it. I then tried to stop the process using the command: sudo /etc/init.d/ssh stop which reported that it was working, but after checking the processes and consulting syslog I found that it was re-spawning after I had told it to stop.I found 2 ways to stop the process without it re-spawning:sudo initctl stop sshand sudo service ssh stopSo whilst I can turn it off at each boot, or script it to shutdown at login, I'm still wondering why update-rc.d isn't working
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Jul 1, 2010
I have latest openssh-server. you know the classic star/stop scripts:
sudo /etc/init.d/ssh start/stop
But when I wrote this stop command, everything looks good, except sshd was still running. I looked into script it uses start-stop-deaemon to kill through pid. The script always kills process, but immediately, new process of sshd was emerged (by it self - with new process ID)! I don't get it. I'm sick of my not understanding of the proglem! The new process of sshd has parent with id 1 (init). How is this possible? How does it come, that ssh can not be turn off and nobody has noticed or complain about it?
After 2 hours of googling I managed to find this command:
sudo service ssh stop
and ssh finally got killed. Yeahh! After issuing this command /etc/init.d/ssh start/stop work correctly. But only to restart of system. Is this some king of super-uber command and we should not user /etc/init.d/ scripts anymore?
The strange thing is, ssh is run by itself after system start-up (without being in /etc/rc...).
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Jul 7, 2010
I see in /etc/init/ssh.conf that sshd is designed to start on filesystemstop on runlevel SI understand that runlevel S is single user.Which says to me that sshd is not stopped on shutdown (runlevel 0).Also, sshd is in /usr/sbin/sshd and furthermoresudo lsof -p <sshd_pid>shows that it uses lib files in /usr/lib.So, my question is, if sshd is not stopped on shutdown YET sshd uses files in /usr, then how can/etc/rc0.d/S40umountfsever successfully umount /usr during shutdown when /usr is on its own partition? sshd should still be using the files, meaning the file system is busy. right?Yet, I'm pretty sure that my shutdowns used to complete successfully. (Edit : I guess they didn't - see next post)
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Jun 30, 2010
i installed it, but every time i start my system, sshd is running, but i can't find out where it's startup entry is located.Code:ls /etc/rc*.d | grep sshreturns nothing, which indeed is true, 'cause i removed the links from the runlevel directories. i checked the rc.local file which is empty and never added a line anywhere to start the ssh daemon explicit.i'm using the latest ubuntu with updates and everything (at least i think so). in my gnome startup application preferences the only thing related to ssh is the ssh key agent. but if i deactivate it, sshd still startsup.
Code:
sudo update-rc.d -f ssh remove
didn't helped either
[code]....
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Jan 6, 2010
I've started to get segfaults in sshd when trying to connect. There has been no reboot and (until I restarted the sshd to try to fix the problem) there was still another ssh session connected.
The log messages:
Code:
==> kern.log <==
Jan 6 21:33:38 shuttle kernel: [ 1928.611128] sshd[9548]: segfault at bf30e534 eip b7f51b4c esp bf30e510 error 6
==> auth.log <==
[Code]....
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Aug 25, 2010
At first I thought that the following command will restart my sshd server:
/etc/init.d/sshd restart
but there is no "sshd" server in this directory.
How else do I (re)start the ssh server? How can I get the version/release number of the sshd server? Where (in which directory) should I put SSH keys?
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Dec 27, 2010
Not sure if this belongs here or in the upgrade forum but since the upgrade went OK I figured I would post this here. I come from a RedHat background and am not too familiar with the Ubuntu/Debian way of dealing with service startup so this may be simple. I was running 10.04 LTS on a Sony Vaio and did a distribution upgrade to 10.10. When running 10.04 LTS the sshd daemon started on boot and I was able to ssh into the PC. Now that did the update I can start the daemon using the command "sudo /etc/init.d/ssh start" but it doesn't start when the systems boots.
I even tried creating the entries in the /etc/rc.#.d directories like this:
/etc/rc0.d/K20ssh -> ../init.d/ssh
/etc/rc1.d/K20ssh -> ../init.d/ssh
[code]....
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Jan 19, 2011
I can't ssh into my Dad's machine. He can ssh in from another computer on his network, but I can't get in across the internet. I thought we had port forwarding set up correctly on his router. (Westell 327W running verizon software - sshd application, port 22 to port 22, tcp).
I can exchange keys with his server but I get. "Permission denied, please try again" when I try and login. An nmap scan (with -PN option) on his IP shows the open port.
PORT STATE SERVICE
22/tcp open ssh
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Feb 22, 2011
I've got Fedora 14 running on an EBS volume on Amazon EC2. I've created a few users and enabled port 22. When I set a password for these users, they can successfully ssh into the instance; even if they logout and login again....until:
If I reboot the machine, they can no longer ssh into the machine (permission denied). If I issue the passwd <user> command and change their passwords, they can login again....until I reboot the machine at which time they cannot login again until I change their passwords. The problem exists even from the machine. That is, if root attempts to ssh into 127.0.0.1 using their username/password, the same problem/resolution exists.
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Jan 22, 2011
How do I get SSHD to log EVERYTHING to it's own log file? I tried this in sshd_conf:
SyslogFacility SSHDLOG
LogLevel DEBUG
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Jan 18, 2010
I'm having troubles trying to understand this problem:my homeserver until yesterday had a public IP, staying on network, with sshd running and all was fine;this evening I changed the IP, giving it a local lan address, and what happened if I tried to connect to it by ssh?I got an error about "Connection closed by remote host". Google helped me finding that was regarded to hosts.deny file, that was actually containing a lineALL:ALLthat I commented, and all was fine.My question is: why the hosts.deny (that has never changed) was observed only with the local IP?I tried to switch back to the public IP and leaving ALL:ALL, and it did connect without any problem
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Jun 13, 2010
Updated two SSH packages today and now SSHd wont start. Worked fine an hour ago, and I'm still logged onto the server via pre-existing SSH sessions, but now I obviously cannot start new ones.
Code:
paine@pandora:~$ sudo /etc/init.d/ssh start
* /dev/null is not a character device!
paine@pandora:~$
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Feb 9, 2011
What is happening when I log in to my Ubuntu server machine via ssh and putty. trying to understand everything, primarily securing my server.
I have specified the ssh server to listen on port 5525, and can login without a problem.
When I look at the logs though it says I connected from xxx.xx.xx.xx on port 53602.
What is happening here and why is the logged connection a different port to the one specified in the config file?
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May 19, 2011
Somehow the -D option got tacked on to my sshd when I start up. How do I remove the -D option when sshd is started at boot? I'm guessing I need to edit something in /etc/init.d but not sure what. I checked System->Preferences->Startup Applications and the ssh server daemon isn't listed there. And since it is a command line option /etc/ssh/sshd_config is of no help.
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Jun 11, 2011
I've been using ssh for a LONG time to connect my laptop to my desktop with no problems. I use a non-standard port (nnnnn) and keys. After a power outage that caused a shutdown and reboot, I can no longer ssh into the desktop. The only changes I've made are updates (laptop and desktop both running ubuntu 10.04).
$ ssh -p nnnnn Desktop
ssh: connect to host Desktop port nnnnn: Connection refused
No messages are generated in any of the logs on Desktop!
$ /usr/sbin/sshd -T
port nnnnn
protocol 2
addressfamily any
listenaddress 0.0.0.0:12023
listenaddress [::]:12023 .....
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Jun 29, 2011
I have a Redhat fedora core release 6 (2.6.22.9-61.Ns4) server and form time to time ssh fails although I am still able to ping the device and with a reboot the device will start working correctly so upon further investigation it appears the sshd daemon fails.Not knowing a great deal about Linux I thought I would ask some advice on the path I am thinking of taking. The first would be to put an entry in the cron to try and start the ssdh every hour or so. Would this cause issues in the long term run it multiple times when the sshd daemon was still running?
The Second though I had was having a bash script to check if the process was running and if not restarts it and if it was just exit the program which would seem like a neater way to do it but this is where my limited Linux knowledge hits a wall so was looking for suggestion on how to implement this?
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Mar 7, 2010
I have openSSH installed and wish to log on to my Centos container (hosted by switchlinck.co.uk) from my Windows PC using putty. I can log on fine using by entering my username and password, but wish to use an rsa key to log on without a password. I have managed to create the keys with putty, and ammended them to work with openSSH. However, I am unable to find the authorized_keys file to put the key into. SSH is running but that file does not exist in /etc/ssh. When I read different how to sites for this, they all point towards ~/.ssh. I do not have a .ssh directory anywhere on the system. I have tried creating different users but still can not find this directory.
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