ssh in network
Lisa Kachold
lisakachold at obnosis.com
Sat Mar 31 16:36:00 MST 2012
Mike:
On Sat, Mar 31, 2012 at 2:44 PM, Michael Havens <bmike1 at gmail.com> wrote:
>
>
> On Sat, Mar 31, 2012 at 1:21 PM, Lisa Kachold <lisakachold at obnosis.com>wrote:
>
>>
>>
>> On Sat, Mar 31, 2012 at 12:58 PM, Michael Havens <bmike1 at gmail.com>wrote:
>>
>>>
>>> That means you "manually installed it".
>>>>
>>>
>>> I did?
>>>
>>
>> Just remove it:
>>
>> # apt-get remove openssh-server
>> # apt-get add openssh-server
>> # /etc/init.d/ssh start
>>
>>
> I just tried and those linux kernel updates for
> linux-image-3.0.0-15-generic
> linux-image-3.0.0-16-generic
> linux-image-3.0.0-17-generic
> still show up (and make me wait about 5 minutes for it to complete). (see
> 'a' at the end) After I removed it I tried the second command you gave me
> and it said 'command not found'.
>
Okay sorry it's
# apt-get install openssh-server
> Then I tried to ssh out of the ubuntu but got the connection refused
> error, so I reinstalled it and could again..
>
>
>> >Mike it looks like one of you systems is on the wireless and the other
>>> on the Wired.
>>> Yes, that is correct. Both connected to the modem
>>>
>>>
>> That means that the connection times out. Are you trying to ssh as
>> root? Sometimes root is excluded from connecting via /etc/ssh/sshd_config?
>>
>
> I thought that was the only way to run ssh.
>
>
You run a ssh server and you use a ssh client as a user.
# ssh myusername at targetserverIP
>
>> # grep Root /etc/ssh/sshd_config <--------------- 'root' not in file
>>
>
Make sure you used "Root" like
# sudo grep Root /etc/ssh/sshd_config
You should see it (after openssh-server is installed) just look if it says
yes or no.
>
>>
>> Okay, you can do (verify ssh):
>> # /etc/init.d/ssh status
>> or
>> # netstat -antp |grep ssh
>> or
>> # ps -ef |grep ssh <-------------------------------------- happily
>> running
>>
>
> ps -ef |grep ssh
> bmike1 1750 1717 0 Mar27 ? 00:00:01 /usr/bin/ssh-agent
> /usr/bin/dbus-launch --exit-with-session /usr/bin/gnome-session
> --session=ubuntu
> root 2607 1 0 13:51 ? 00:00:00 /usr/sbin/sshd -D
> root 2942 29774 0 14:01 pts/3 00:00:00 grep --color=auto ssh
> root at Michaels-PC:/etc/init.d#
>
>
>> Try your connection again! <---------------- I can only ssh out of the
>> ubuntu, (this is the step I figured out 'apt-get remove openssh-server'
>> broke things
>>
>> Okay:
# apt-get install openssh-server
/etc/init.d/ssh start
>
>> # ssh yourname at targetprintserverip
>>
>> If the connection is seen on the host (but has some problem due to FQN
>> (/etc/hosts) or /etc/hosts.allow files, it will be logged in either:
>>
> Hmmm? Go look in var log and see what this system logs to:
# sudo tail /var/log/messages
# sudo tail /var/log/syslog
>
>> # tail /var/log/messages <--------------- no such file or directory
>> # tail /var/log/secure <--------------- no such file or directory
>>
>>
>> Okay we see the ports open, so we don't have a firewall in the way.
>>
>> What is in your /etc/hosts.allow and /etc/hosts.deny on the ssh target?
>>
>
> all lines are commented out., (see 'b' at end) Perhaps I should create an
> allowed range?
>
> from my investigation of the man page that would look like this:
>
> 192.168.0.0/255.255.255.245 (to allow for 10 units)
>
> is that correct?
>
> then I guess uncomment 'paranoid' in the deny file
>
Add this to /etc/hosts.allow:
/etc/hosts.allow looks:
ALL : 127.0.0.1
sshd : 192.168.0.0/24, 78.207.132.32
This example shows an external address you might want to use to connect
from outside your internal network (once you open or port forward port 22).
Now the /etc/hosts.deny file:
ALL : ALL
>
>
>>
>>>
>>>
>>>>> why did the sound stop working?
>>>>>
>>>>> >>Another problem that just started is the sound on the print server
>>>>> stopped working. I clicked on the speaker icon >>to turn it up and I see it
>>>>> is maxed. So then I clicked 'sound settings' and the output volume is maxed
>>>>> so I >>investigate the tabs. The first tab (hardware) has nothing in the
>>>>> 'choose a device to configure' window. So >>somehow the driver was removed
>>>>> (I guess).
>>>>>
>>>>>
>>>> Which distro?
>>>>
>>>> Ubuntu (print server).
>>>
>>
>> Okay you can post to the Ubuntu boards, or google the exact *distro
>> version* [uname -a] with your question and find a great number of people
>> who have already answered your question.
>>
>>>
>>>
>>>
> Thanks... I'll do just that!
>
> Do this and your apt-get/aptitude will be fixed:
# sudo apt-get install make
>
>>
>> -a-
>> apt-get remove openssh-server
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> The following packages will be REMOVED:
>> openssh-server ssh
>> 0 upgraded, 0 newly installed, 2 to remove and 3 not upgraded.
>> 3 not fully installed or removed.
>> After this operation, 938 kB disk space will be freed.
>> Do you want to continue [Y/n]?
>> Abort.
>> root at Michaels-PC:/etc/init.d# apt-get remove openssh-server
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> The following packages will be REMOVED:
>> openssh-server ssh
>> 0 upgraded, 0 newly installed, 2 to remove and 3 not upgraded.
>> 3 not fully installed or removed.
>> After this operation, 938 kB disk space will be freed.
>> Do you want to continue [Y/n]? y
>> (Reading database ... 259861 files and directories currently installed.)
>> Removing ssh ...
>> Removing openssh-server ...
>> ssh stop/waiting
>>
>> Processing triggers for ureadahead ...
>> Processing triggers for ufw ...
>> Processing triggers for man-db ...
>> Setting up linux-image-3.0.0-15-generic (3.0.0-15.26) ...
>> Running depmod.
>> update-initramfs: deferring update (hook will be called later)
>> Examining /etc/kernel/postinst.d.
>> run-parts: executing /etc/kernel/postinst.d/dkms 3.0.0-15-generic
>> /boot/vmlinuz-3.0.0-15-generic
>> run-parts: executing /etc/kernel/postinst.d/initramfs-tools
>> 3.0.0-15-generic /boot/vmlinuz-3.0.0-15-generic
>> update-initramfs: Generating /boot/initrd.img-3.0.0-15-generic
>> /etc/initramfs-tools/conf.d/resume.new: 1: GNU: not found
>> run-parts: executing /etc/kernel/postinst.d/pm-utils 3.0.0-15-generic
>> /boot/vmlinuz-3.0.0-15-generic
>> run-parts: executing /etc/kernel/postinst.d/update-notifier
>> 3.0.0-15-generic /boot/vmlinuz-3.0.0-15-generic
>> run-parts: executing /etc/kernel/postinst.d/zz-update-grub
>> 3.0.0-15-generic /boot/vmlinuz-3.0.0-15-generic
>> /etc/default/grub: 1: GNU: not found
>> run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code
>> 127
>> Failed to process /etc/kernel/postinst.d at
>> /var/lib/dpkg/info/linux-image-3.0.0-15-generic.postinst line 1010.
>> dpkg: error processing linux-image-3.0.0-15-generic (--configure):
>> subprocess installed post-installation script returned error exit status
>> 2
>> Setting up linux-image-3.0.0-16-generic (3.0.0-16.29) ...
>> Running depmod.
>> update-initramfs: deferring update (hook will be called later)
>> Examining /etc/kernel/postinst.d.
>> run-parts: executing /etc/kernel/postinst.d/dkms 3.0.0-16-generic
>> /boot/vmlinuz-3.0.0-16-generic
>> run-parts: executing /etc/kernel/postinst.d/initramfs-tools
>> 3.0.0-16-generic /boot/vmlinuz-3.0.0-16-generic
>> update-initramfs: Generating /boot/initrd.img-3.0.0-16-generic
>> /etc/initramfs-tools/conf.d/resume.new: 1: GNU: not found
>> run-parts: executing /etc/kernel/postinst.d/pm-utils 3.0.0-16-generic
>> /boot/vmlinuz-3.0.0-16-generic
>> run-parts: executing /etc/kernel/postinst.d/update-notifier
>> 3.0.0-16-generic /boot/vmlinuz-3.0.0-16-generic
>> run-parts: executing /etc/kernel/postinst.d/zz-update-grub
>> 3.0.0-16-generic /boot/vmlinuz-3.0.0-16-generic
>> /etc/default/grub: 1: GNU: not found
>> run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code
>> 127
>> Failed to process /etc/kernel/postinst.d at
>> /var/lib/dpkg/info/linux-image-3.0.0-16-generic.postinst line 1010.
>> dpkg: error processing linux-image-3.0.0-16-generic (--configure):
>> subprocess installed post-installation script returned error exit status
>> 2
>> Setting up linux-image-3.0.0-17-generic (3.0.0-17.30) ...
>> Running depmod.
>> update-initramfs: deferring update (hook will be called later)
>> Examining /etc/kernel/postinst.d.
>> run-parts: executing /etc/kernel/postinst.d/dkms 3.0.0-17-generic
>> /boot/vmlinuz-3.0.0-17-generic
>> run-parts: executing /etc/kernel/postinst.d/initramfs-tools
>> 3.0.0-17-generic /boot/vmlinuz-3.0.0-17-generic
>> update-initramfs: Generating /boot/initrd.img-3.0.0-17-generic
>> /etc/initramfs-tools/conf.d/resume.new: 1: GNU: not found
>> run-parts: executing /etc/kernel/postinst.d/pm-utils 3.0.0-17-generic
>> /boot/vmlinuz-3.0.0-17-generic
>> run-parts: executing /etc/kernel/postinst.d/update-notifier
>> 3.0.0-17-generic /boot/vmlinuz-3.0.0-17-generic
>> run-parts: executing /etc/kernel/postinst.d/zz-update-grub
>> 3.0.0-17-generic /boot/vmlinuz-3.0.0-17-generic
>> /etc/default/grub: 1: GNU: not found
>> run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code
>> 127
>> Failed to process /etc/kernel/postinst.d at
>> /var/lib/dpkg/info/linux-image-3.0.0-17-generic.postinst line 1010.
>> dpkg: error processing linux-image-3.0.0-17-generic (--configure):
>> subprocess installed post-installation script returned error exit status
>> 2
>> Errors were encountered while processing:
>> linux-image-3.0.0-15-generic
>> linux-image-3.0.0-16-generic
>> linux-image-3.0.0-17-generic
>> E: Sub-process /usr/bin/dpkg returned an error code (1)
>> root at Michaels-PC:/etc/init.d# apt-get add openssh-server
>> E: Invalid operation add
>> root at Michaels-PC:/etc/init.d#
>>
>>
>> -b-
>>
>
> ::::::::::::::
> /etc/hosts.allow
> ::::::::::::::
> # /etc/hosts.allow: list of hosts that are allowed to access the system.
> # See the manual pages hosts_access(5) and
> hosts_options(5).
> #
> # Example: ALL: LOCAL @some_netgroup
> # ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
> #
> # If you're going to protect the portmapper use the name "portmap" for the
> # daemon name. Remember that you can only use the keyword "ALL" and IP
> # addresses (NOT host or domain names) for the portmapper, as well as for
> # rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8)
> # for further information.
> #
>
> ::::::::::::::
> /etc/hosts.deny
> ::::::::::::::
> # /etc/hosts.deny: list of hosts that are _not_ allowed to access the
> system.
> # See the manual pages hosts_access(5) and
> hosts_options(5).
> #
> # Example: ALL: some.host.name, .some.domain
> # ALL EXCEPT in.fingerd: other.host.name, .other.domain
> #
> # If you're going to protect the portmapper use the name "portmap" for the
> # daemon name. Remember that you can only use the keyword "ALL" and IP
> # addresses (NOT host or domain names) for the portmapper, as well as for
> # rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8)
> # for further information.
> #
> # The PARANOID wildcard matches any host whose name does not match its
> # address.
> #
> # You may wish to enable this to ensure any programs that don't
> # validate looked up hostnames still leave understandable logs. In past
> # versions of Debian this has been the default.
> # ALL: PARANOID
>
> root at Michaels-PC:/etc/init.d#
>
>
>>
>>
>>
>>
>>
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>
>
>
> --
> :-)~MIKE~(-:
>
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