Comments on: Ubuntu Linux install and configure OpenSSH (SSHD) server

By: hejmiki

hejmiki — Fri, 10 Sep 2010 15:06:18 +0000

I think there is another TYPO

correct me if i’m wrong
You set up Port 22 –> Port 512

and then in your output of sudo iptables -L -n
there is no rule for accepting tcp on Port 512 but there is Port 514 (udp)

By: Melroy van den Berg

Melroy van den Berg — Fri, 21 May 2010 21:33:16 +0000

You can also try putty, i prefer that more then firestarter.

By: Dmitry

Dmitry — Mon, 12 Apr 2010 08:16:35 +0000

I had the same proplem.
All you need do is to update your system:
>sudo aptitude update

By: Samuel Berryman

Samuel Berryman — Sat, 27 Feb 2010 12:46:38 +0000

I have just installed Ubuntu 9.10 and it is all working fine! However when I try to install openssh like it tells me to above i get the following error:

Reading Package Lists… Done
Building dependency tree
Reading state information… Done
package openssh-server is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package openssh-server has no installation candidate

I dont know why it is doing this and really could do with some help please!

By: I can't see to get this working

I can't see to get this working — Thu, 28 Jan 2010 10:28:29 +0000

Hi,
I try installing Ubuntu Server 8.10, and i tell u, installation when just fine. I get stuck on the part where u need to configure /etc/network/interfaces, that, because i need the server to have a static IP. I have ADSL connection, and IP’s r assing by the modem/router (Thompson SpeedTouch). IP’s r configure as “start 10.0.0.34 – end 10.0.0.134″ “sbnetmask 255.255.255.0″ that’s in the modem/router, and obvious it gives me the router IP number. Now, if i want to assing a static IP to the server it should be some like “10.0.0.3″ SM “255.255.255.0″ and what is Broadcast, Network and some other’s that has to be edited with “VIM”. I mean, im from windows xp, and i want to host my own web page, and mail server, plus some sharing files locally, maybe log-on remotelly… that’s all i want; but this part is killing me. anyone willing to help please? thanks in advanced.

By: Sudo-Root Password-Sharing files

Sudo-Root Password-Sharing files — Thu, 20 Aug 2009 19:41:21 +0000

[...] a lot nixcraft Ubuntu Linux install and configure OpenSSH (SSHD) server Ubuntu Linux OpenSSH Server installation and configuration are they differs? or the same thing? [...]

By: Japan Shah

Japan Shah — Mon, 06 Jul 2009 05:15:24 +0000

Thanks it works !!!

By: ssh_user

ssh_user — Tue, 07 Apr 2009 20:51:00 +0000

Ubuntu 8.10 64 bits, no firewall active.
After changing ssh listning port from 22 to 2223, connecting fails, see dump below
Can somebody explain what can cause a ‘Read from socket failed: Connection reset by peer’. The question is in several forums, couldn’t find answers yet.

dump:

jaap@jaap-laptop:~$ ssh -p 2223 jaap@localhost -vvv
OpenSSH_5.1p1 Debian-3ubuntu1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to localhost [127.0.0.1] port 2223.
debug1: Connection established.
debug1: identity file /home/jaap/.ssh/identity type -1
debug1: identity file /home/jaap/.ssh/id_rsa type -1
debug1: identity file /home/jaap/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-3ubuntu1
debug1: match: OpenSSH_5.1p1 Debian-3ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-3ubuntu1
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
Read from socket failed: Connection reset by peer

By: El Perro Loco

El Perro Loco — Fri, 02 Jan 2009 14:44:04 +0000

Good article. Short, complete and to the point.
Thanks.

By: loh

loh — Sat, 22 Mar 2008 15:05:41 +0000

First time installing ubuntu 7.10. This was very helpful.

By: brandon

brandon — Mon, 29 Oct 2007 03:40:58 +0000

I can ssh from ubuntu to osX, but not from osX to ubuntu. I had the same situation where I could go from winXP to osX, but not the other way. Since it works ubuntu to osX does that mean I need to switch the dsa keys around, or do they work but ways? So, it seems like the problem must be in ubuntu’s firewall or the router’s portforwarding. When I setup portforwarding I feel like I should open port 22 for the mac’sip if i want to get into the mac. Strangely that doesn’t work, but when I open port 22 for 192.168.0.1 (the router’s ip) then I can ssh into the mac. I want to have SAMBA and VNC forwarded over ssh. I want the ubuntu to be headless but then I want to open VLC on the mac and watch a movie from the ubuntu. Once long ago I was able to get VNC to work both ways with a mac and a win2k machine. I don’t know what I’m doing wrong.

By: sungmin

sungmin — Sun, 17 Jun 2007 20:09:25 +0000

what is difference with login in with login and password and with PUB key ? also what if I have 10 users who needs to login to my Linux box, what is best way for them to login ? with login and password or with PUB KEYS ?

By: Markku

Markku — Sun, 01 Apr 2007 20:42:54 +0000

I cant get it to work. When i try to run openssh-server it just says fail.

By: nixcraft

nixcraft — Fri, 30 Mar 2007 03:20:37 +0000

xain,

It was typo and post has been updated. Thanks for heads up.

By: xain

xain — Thu, 29 Mar 2007 14:05:25 +0000

what is the point that after changing port from 22 to 512, but still to make sure iptables open port 22?

By: Cappy

Cappy — Tue, 27 Feb 2007 09:12:52 +0000

The problem was that I ran “/etc/init.d/ssh restart” as a user and not as an admin. It ended up giving a bunch of RSA errors and somehow prevented the system from switching ports when I then ran it from root. A simple reboot fixed it. Thanks for the guide!

By: Fulano

Fulano — Tue, 27 Feb 2007 07:38:30 +0000

I followed the instructions and I seem to be going alright, I can ssh locally as another user but I cannot seem to log in from remote locations, just seems to time out. Any ideas?

By: nixcraft

nixcraft — Thu, 15 Feb 2007 04:17:39 +0000

Make sure firewall is not blocking your port 30000. Run following command to see current iptables.
sudo iptables -L -n
OR
iptables -L -n

Also /etc/hosts.allow and /etc/hosts.deny can block access.

By: Cappy

Cappy — Thu, 15 Feb 2007 00:56:16 +0000

Hm … I can SSH into my server when the port is set to 22 but as soon as I set it up to a high number (30,000) and restart the ssh server all I get are server rejections. ssh -p 30000 cappy@127.0.0.1 just won’t work =(

By: nixcraft

nixcraft — Thu, 01 Feb 2007 22:01:21 +0000

neon.

What error you are getting?