ssh in network

Michael Havens bmike1 at gmail.com
Mon Apr 2 09:26:50 MST 2012


On Sun, Apr 1, 2012 at 7:28 PM, Lisa Kachold <lisakachold at obnosis.com>
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 <bmike1 at gmail.com> 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 at Michaels-PC:~$ sudo locate iptables-save
/sbin/iptables-save
/usr/share/man/man8/iptables-save.8.gz
bmike1 at 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~(-:
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