Re: ssh in network

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Author: Michael Havens
Date:  
To: Main PLUG discussion list
Subject: Re: ssh in network
guess what I just found out.... openssh-server wasn't installed on the
laptop. So I installed it and now netstat has the same line on it that
says port 22

  sudo netstat -antp | grep 22
  tcp        0      0 0.0.0.0:22              0.0.0.0:*
LISTEN      433/sshd


However, I still can't ssh to the ubuntu. But I scan ssh from the ubuntu
to the mint. Yipee!


On Mon, Apr 2, 2012 at 9:26 AM, Michael Havens <> wrote:

> On Sun, Apr 1, 2012 at 7:28 PM, Lisa Kachold <>
> wrote:
> >Are you colorblind?
> ^---------------------------------- only slightly
>
> >respond inline.
>
> ^---------------------------------------not sure what you mean.
>
> >Let's address each item until we resolve things:
>    On Sun, Apr 1, 2012 at 5:49 PM, Michael Havens <>
> wrote:
> >>>A route add command is not persistent past a reboot or network restart.
> >>It seems to have been. I rebooted and still can't ssh from the laptop to
> the ubuntu.
> >But you couldn't also ssh BEFORE you did the route add so these are two
> different things.
> Yes I could. I could ssh from the laptop to the ubuntu (printserver) until
> I issued the command ' sudo ip route add 192.168.1.0/24<http://192.168.0.1/24>dev eth0' on the ubuntu on the advice of my google search. Then I tried to
> delete it and add the proper route (192.168.0.1) but that didn't help any.

>
> >Take down your wlan (are you using wicd?)
>
> ^-----------Wireless is now off. I don't know what Mint uses... it doesn't
> say.
> >>>Verify that both boxes have a listening ssh daemon:
>
> >># sudo netstat -antp | grep 22
>
> >>tcp        0      0 0.0.0.0:22              0.0.0.0:*
> LISTEN      433/sshd

>
> >><ubuntu>
>
> >>tcp        0      0 0.0.0.0:139             0.0.0.0:*
> LISTEN      12243/smbd

>
> >>tcp        0      0 0.0.0.0:445             0.0.0.0:*
> LISTEN      12243/smbd

>
> >><laptop>
>
> >Good you have sshd listening on port 22 on ubuntu.
>
> >You do NOT have sshd (daemon) listening on your laptop.
>
> >Be sure you have started it if you want to ssh to the laptop from ubuntu:
>
> ># sudo /etc/init.d/ssh start
>
> >In order to make sure ssh starts at boot in Ubuntu:
>
> ># sudo update-rc.d ssh defaults <-------------done
>
> >Reference: https://help.ubuntu.com/community/UbuntuBootupHowto
>
> >>Make sure you haven't installed DenyHosts or iptables that limits your
> connections:
>
> >># locate Deny |more
>
> >># sudo iptables-save |more
>
> >sudo locate Deny|more <------------------no respose
>
> >sudo locate iptables-save|more
>
> >/sbin/iptables-save
>
> >/usr/share/man/man8/iptables-save.8.gz
>
> >enter
>
> ># sudo iptables-save
>
> >You are looking to see if your iptables is up and configured to firewall
> ssh. Dump the response in here.
>
> bmike1@Michaels-PC:~$ sudo locate iptables-save
> /sbin/iptables-save
> /usr/share/man/man8/iptables-save.8.gz
> bmike1@Michaels-PC:~$
>
>
> >Oops, sorry wrong link! ddclient is for opendns dynamic dns entries, that
> logs into your provider and resets a public ip when needed. Turn it down
> for now:*
> # sudo /etc/init.d/ddclient stop*
>
> ^-----------------done
>
>
> >Here's how to set it up (once you get ssh setup); it requires an opendns
> account.
> >http://ubuntuforums.org/showthread.php?t=1264710
> <http://ubuntuforums.org/showthread.php?t=1264710>
> ^--if you can remember please remind me later<http://ubuntuforums.org/showthread.php?t=1264710>
>
> <http://ubuntuforums.org/showthread.php?t=1264710>
> >your system is updated, if it runs? Correct?
> ^------------ Correct
>
> >Check your /etc/nsswitch.conf file to be sure it has
> >"hosts: files dns" Reference:
> http://www.faqs.org/docs/securing/chap6sec71.html
> I'm not sure what you want here. Here is the file:
> # /etc/nsswitch.conf
> passwd: compat
> group: compat
> shadow: compat
> hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
> networks: files
> protocols: db files
> services: db files
> ethers: db files
> rpc: db files
> netgroup: nis
>
> >Then ping each server before trying to reconnect with ssh.<--- they ping
> both ways.
>
> >I am pretty sure that this will work now that you have them both on the
> same network. Be sure you don't
> >have any iptables running denying your port 22 on both servers! iptables
> -L doesn't have any deny rules in it
>
> I don't see any deny rules in my iptables.
> --
> :-)~MIKE~(-:
>




--
:-)~MIKE~(-:
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