Re: SSH From within a Jail

2005-11-15 Thread d c


Koen Martens [EMAIL PROTECTED] wrote:
  Koen Martens wrote:
 d c wrote:
 
Greetings:

I currently am running Freebsd 6.0 Release.

I am experimenting with jails and have run into a
problem. I need to ssh from within my jail to another
server. Actually I need to use scp. WHen I try it I
get the error: Host key verification failed.
 
 
 This could also be something related to permissions on the .ssh
 directory, but you cleared that out of the way if i understand the
 rest of this thread correctly. I remember having this problem once,
 but can't remember right now what i did to solve it.. I usually
 compile openssh from source anyway, so you might try that. If that
 works, it would probably be interesting to see what is the
 difference between your own hand-rolled openssh and the one that
 came with your world.

Just remembered something else: do you jexec into the jail, or do
you do a proper logon (eg. ssh into the jail). I think that if you
jexec into the jail and then try to ssh, you might have a problem
because you aren't really logged in to the jail and thus have no
(psuedo) tty associated with your session..

Koen

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  Yes- Koen you hit the nail on the head.  If I use jexec I cannot use ssh to 
connect to other servers.  I also ran into problems with make in ports tree and 
using screen.  However-  If I ssh in I can perform all functions (ssh and make) 
as if it were it own system...aka- jail.  
   
  The man page should reflect this.  That is...all compiling and management of 
the jail should be done through ssh.  Only use jexec for intial configuration 
and emergency related work.
   
  Thanks everyone for their response and ideas.
  



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Re: SSH From within a Jail

2005-11-14 Thread Pawel Jakub Dawidek
On Sun, Nov 13, 2005 at 09:26:05PM +0100, Koen Martens wrote:
+ Just remembered something else: do you jexec into the jail, or do
+ you do a proper logon (eg. ssh into the jail). I think that if you
+ jexec into the jail and then try to ssh, you might have a problem
+ because you aren't really logged in to the jail and thus have no
+ (psuedo) tty associated with your session..

I just saw this thread. Yes, you are right, I can confirm this.
To be able to ssh to another server from within a jail, you need to
log in to the jail properly (have access to your terminal), so
jexec won't work here.
Try to ssh into the jail and then ssh to another box.

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Re: Re: SSH From within a Jail

2005-11-14 Thread Sergey Babkin
From: Pawel Jakub Dawidek [EMAIL PROTECTED]

On Sun, Nov 13, 2005 at 09:26:05PM +0100, Koen Martens wrote:
+ Just remembered something else: do you jexec into the jail, or do
+ you do a proper logon (eg. ssh into the jail). I think that if you
+ jexec into the jail and then try to ssh, you might have a problem
+ because you aren't really logged in to the jail and thus have no
+ (psuedo) tty associated with your session..

I just saw this thread. Yes, you are right, I can confirm this.
To be able to ssh to another server from within a jail, you need to
log in to the jail properly (have access to your terminal), so
jexec won't work here.
Try to ssh into the jail and then ssh to another box.

ssh -n can work without a tty. Though I'm not sure
what was the question, I did not watch this thread
from the start.

-SB
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Re: SSH From within a Jail

2005-11-13 Thread Koen Martens
Koen Martens wrote:
 d c wrote:
 
Greetings:

I currently am running Freebsd 6.0 Release.

I am experimenting with jails and have run into a
problem.  I need to ssh from within my jail to another
server.  Actually I need to use scp.  WHen I try it I
get the error:  Host key verification failed.
 
 
 This could also be something related to permissions on the .ssh
 directory, but you cleared that out of the way if i understand the
 rest of this thread correctly. I remember having this problem once,
 but can't remember right now what i did to solve it.. I usually
 compile openssh from source anyway, so you might try that. If that
 works, it would probably be interesting to see what is the
 difference between your own hand-rolled openssh and the one that
 came with your world.

Just remembered something else: do you jexec into the jail, or do
you do a proper logon (eg. ssh into the jail). I think that if you
jexec into the jail and then try to ssh, you might have a problem
because you aren't really logged in to the jail and thus have no
(psuedo) tty associated with your session..

Koen

-- 
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Re: SSH From within a Jail

2005-11-12 Thread Xin LI
On 11/12/05, d c [EMAIL PROTECTED] wrote:
 Greetings:

 I currently am running Freebsd 6.0 Release.

 I am experimenting with jails and have run into a
 problem.  I need to ssh from within my jail to another
 server.  Actually I need to use scp.  WHen I try it I
 get the error:  Host key verification failed.

This looks like that the connection was rejected in its very early
stage.  Would you please use sockstat -4 within the jail (see jexec
and jls manual) and see if sshd is actually up?

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Re: SSH From within a Jail

2005-11-12 Thread Xin LI
On 11/12/05, d c [EMAIL PROTECTED] wrote:
 I am not running sshd in the jail.  I am trying to
 attach to sshd on another server from inside the jail.

Seems that I has misread.  Would you please try telnet [target IP]
22 to see what happens?

BTW.  Please reply all when replying e-mail from the list, which
ensures that the experience would be shared with others :-)

Cheers,
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Re: SSH From within a Jail

2005-11-12 Thread d c
telnet 10.0.0.60 22

Connected to 10.0.0.60.
Escape character is '^]'.
SSH-2.0-OpenSSH_3.8.1p1 FreeBSD-20040419

If I ssh into 10.0.0.60 from the host system that the
jail is running on I connect right in w/o any
problems.

Just the jails on the host giving me probs.

I also tried recreating the /etc/ssh/ssh_hostkey but
that didn;t help

--- Xin LI [EMAIL PROTECTED] wrote:

 On 11/12/05, d c [EMAIL PROTECTED] wrote:
  I am not running sshd in the jail.  I am trying to
  attach to sshd on another server from inside the
 jail.
 
 Seems that I has misread.  Would you please try
 telnet [target IP]
 22 to see what happens?
 
 BTW.  Please reply all when replying e-mail from
 the list, which
 ensures that the experience would be shared with
 others :-)
 
 Cheers,
 --
 Xin LI [EMAIL PROTECTED] http://www.delphij.net
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Re: SSH From within a Jail

2005-11-12 Thread Andrea Campi
On Sat, Nov 12, 2005 at 05:30:58AM -0800, d c wrote:
 Just the jails on the host giving me probs.
 
 I also tried recreating the /etc/ssh/ssh_hostkey but
 that didn;t help

As a quick test, try moving aside (renaming) the .ssh directory
in the home directory of the jail user you're trying this from.
If it fixes your issue, then it's a simple matter of wrong host
keys and/or client configuration. If not, you may be seeing
corruption somewhere.

Either way, you definitely want to use the -v option with ssh and
look carefully for hints.


Bye,
Andrea

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Re: SSH From within a Jail

2005-11-12 Thread d c


--- Xin LI [EMAIL PROTECTED] wrote:

 On 11/12/05, d c [EMAIL PROTECTED] wrote:
  telnet 10.0.0.60 22
 
  Connected to 10.0.0.60.
  Escape character is '^]'.
  SSH-2.0-OpenSSH_3.8.1p1 FreeBSD-20040419
 
  If I ssh into 10.0.0.60 from the host system that
 the
  jail is running on I connect right in w/o any
  problems.
 
  Just the jails on the host giving me probs.
 
  I also tried recreating the /etc/ssh/ssh_hostkey
 but
  that didn;t help
 
 Do you have /dev/*random available in the jail? 
 Typically there
 should be /dev/random and a /dev/urandom which is a
 symbolic link to
 /dev/random.  IIRC there is problem if you don't
 have these in the
 jail if you do some ssh related operations...
 
 Cheers,
 --
 Xin LI [EMAIL PROTECTED] http://www.delphij.net
 

Yes there is /dev/random and /dev/urandom

Has anyone successfully used ssh (client) from within
a jail to connect to other servers?

I have recreate numerous jails but all suffer the same
problem.

regards



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Re: SSH From within a Jail

2005-11-12 Thread d c
here is the rsult from using -v.  THis should help.

ns1# ssh -v 10.0.0.60
OpenSSH_4.2p1 FreeBSD-20050903, OpenSSL 0.9.7e-p1 25
Oct 2004
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to 10.0.0.60 [10.0.0.60] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software
version OpenSSH_3.8.1p1 FreeBSD-20040419
debug1: match: OpenSSH_3.8.1p1 FreeBSD-20040419 pat
OpenSSH_3.*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.2p1
FreeBSD-20050903
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server-client aes128-cbc hmac-md5 none
debug1: kex: client-server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(102410248192)
sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: read_passphrase: can't open /dev/tty: Device
busy
Host key verification failed.

I just don't understand how to fix can't open
/dev/tty

regards

--- d c [EMAIL PROTECTED] wrote:

 
 
 --- Xin LI [EMAIL PROTECTED] wrote:
 
  On 11/12/05, d c [EMAIL PROTECTED] wrote:
   telnet 10.0.0.60 22
  
   Connected to 10.0.0.60.
   Escape character is '^]'.
   SSH-2.0-OpenSSH_3.8.1p1 FreeBSD-20040419
  
   If I ssh into 10.0.0.60 from the host system
 that
  the
   jail is running on I connect right in w/o any
   problems.
  
   Just the jails on the host giving me probs.
  
   I also tried recreating the /etc/ssh/ssh_hostkey
  but
   that didn;t help
  
  Do you have /dev/*random available in the jail? 
  Typically there
  should be /dev/random and a /dev/urandom which is
 a
  symbolic link to
  /dev/random.  IIRC there is problem if you don't
  have these in the
  jail if you do some ssh related operations...
  
  Cheers,
  --
  Xin LI [EMAIL PROTECTED]
 http://www.delphij.net
  
 
 Yes there is /dev/random and /dev/urandom
 
 Has anyone successfully used ssh (client) from
 within
 a jail to connect to other servers?
 
 I have recreate numerous jails but all suffer the
 same
 problem.
 
 regards
 
 
   
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Re: SSH From within a Jail

2005-11-12 Thread albi
On Sat, 12 Nov 2005 05:43:51 -0800 (PST)
d c [EMAIL PROTECTED] wrote:

 here is the rsult from using -v.  THis should help.
 
 ns1# ssh -v 10.0.0.60
 OpenSSH_4.2p1 FreeBSD-20050903, OpenSSL 0.9.7e-p1 25
 Oct 2004
 debug1: Reading configuration data /etc/ssh/ssh_config
 debug1: Connecting to 10.0.0.60 [10.0.0.60] port 22.
-- cut --
 debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
 debug1: read_passphrase: can't open /dev/tty: Device
 busy
 Host key verification failed.
 
 I just don't understand how to fix can't open
 /dev/tty

how do you start the jail(s) and how do you deal with /dev in the jail
(s) ?

here's my relevant part in /etc/rc.conf of my host-system on a 5.4-REL
machine as a working example :

jail_enable=YES
jail_socket_unixiproute_only=YES
jail_sysvipc_allow=NO
jail_list=ssh build mail http https
jail_set_hostname_allow=NO

#
jail_build_rootdir=/usr/jails/build
jail_build_hostname=build.mydomain.org
jail_build_ip=192.168.100.100
jail_build_exec=/bin/sh /etc/rc
jail_build_devfs_enable=YES
jail_build_devfs_ruleset=devfsrules_jail


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Re: SSH From within a Jail

2005-11-12 Thread d c


--- albi [EMAIL PROTECTED] wrote:

 On Sat, 12 Nov 2005 05:43:51 -0800 (PST)
 d c [EMAIL PROTECTED] wrote:
 
  here is the rsult from using -v.  THis should
 help.
  
  ns1# ssh -v 10.0.0.60
  OpenSSH_4.2p1 FreeBSD-20050903, OpenSSL 0.9.7e-p1
 25
  Oct 2004
  debug1: Reading configuration data
 /etc/ssh/ssh_config
  debug1: Connecting to 10.0.0.60 [10.0.0.60] port
 22.
 -- cut --
  debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
  debug1: read_passphrase: can't open /dev/tty:
 Device
  busy
  Host key verification failed.
  
  I just don't understand how to fix can't open
  /dev/tty
 
 how do you start the jail(s) and how do you deal
 with /dev in the jail
 (s) ?
 
 here's my relevant part in /etc/rc.conf of my
 host-system on a 5.4-REL
 machine as a working example :
 
 jail_enable=YES
 jail_socket_unixiproute_only=YES
 jail_sysvipc_allow=NO
 jail_list=ssh build mail http https
 jail_set_hostname_allow=NO
 
 #
 jail_build_rootdir=/usr/jails/build
 jail_build_hostname=build.mydomain.org
 jail_build_ip=192.168.100.100
 jail_build_exec=/bin/sh /etc/rc
 jail_build_devfs_enable=YES
 jail_build_devfs_ruleset=devfsrules_jail
 
 
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I mounted my devs like this:

mount_devfs devfs $JAILDIR/dev

I did not set:

jail_socket_unixiproute_only=YES

I also did not use any rules.  What would a typical
ruleset be?





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Re: SSH From within a Jail

2005-11-12 Thread Brian Reichert
On Sat, Nov 12, 2005 at 05:43:51AM -0800, d c wrote:
 debug1: read_passphrase: can't open /dev/tty: Device
 busy
 Host key verification failed.
 
 I just don't understand how to fix can't open
 /dev/tty

Consider the -T option to ssh.  ('Disable pseudo-tty allocation.)
I don't know the ramifications of that, though...

 regards
 
 --- d c [EMAIL PROTECTED] wrote:

-- 
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Re: SSH From within a Jail

2005-11-12 Thread d c


--- Brian Reichert [EMAIL PROTECTED] wrote:

 On Sat, Nov 12, 2005 at 05:43:51AM -0800, d c wrote:
  debug1: read_passphrase: can't open /dev/tty:
 Device
  busy
  Host key verification failed.
  
  I just don't understand how to fix can't open
  /dev/tty
 
 Consider the -T option to ssh.  ('Disable pseudo-tty
 allocation.)
 I don't know the ramifications of that, though...
 
  regards
  
  --- d c [EMAIL PROTECTED] wrote:
 
 -- 
 Brian Reichert[EMAIL PROTECTED]
 55 Crystal Ave. #286  Daytime number: (603)
 434-6842
 Derry NH 03038-1725 USA   BSD admin/developer at
 large 
 


I had the same error even with the -T option.

Here is the ls from /dev in the jail.  Maybe this
helps?

crw---  1 root  wheel   0,  21 Nov 11 22:04
sysmouse
crw---  1 root  wheel   0,  42 Nov 11 22:04
ttyd0
crw---  1 root  wheel   0,  43 Nov 11 22:04
ttyd0.init
crw---  1 root  wheel   0,  44 Nov 11 22:04
ttyd0.lock
crw---  1 root  wheel   0,  48 Nov 11 22:04
ttyd1
crw---  1 root  wheel   0,  49 Nov 11 22:04
ttyd1.init
crw---  1 root  wheel   0,  50 Nov 11 22:04
ttyd1.lock
crw-rw-rw-  1 root  wheel   0, 111 Nov 12 18:19
ttyp0
crw-rw-rw-  1 root  wheel   0, 113 Nov 12 17:36
ttyp1
crw---  1 root  wheel   0,  54 Nov 11 23:44
ttyv0
crw---  1 root  wheel   0,  55 Nov 11 23:25
ttyv1
crw---  1 root  wheel   0,  56 Nov 11 22:06
ttyv2
crw---  1 root  wheel   0,  57 Nov 11 22:06
ttyv3
crw---  1 root  wheel   0,  58 Nov 11 22:06
ttyv4
crw---  1 root  wheel   0,  59 Nov 11 22:06
ttyv5
crw---  1 root  wheel   0,  60 Nov 11 22:06
ttyv6
crw---  1 root  wheel   0,  61 Nov 11 22:06
ttyv7
crw---  1 root  wheel   0,  62 Nov 11 22:04
ttyv8
crw---  1 root  wheel   0,  63 Nov 11 22:04
ttyv9
crw---  1 root  wheel   0,  64 Nov 11 22:04
ttyva
crw---  1 root  wheel   0,  65 Nov 11 22:04
ttyvb
crw---  1 root  wheel   0,  66 Nov 11 22:04
ttyvc
crw---  1 root  wheel   0,  67 Nov 11 22:04
ttyvd
crw---  1 root  wheel   0,  68 Nov 11 22:04
ttyve
crw---  1 root  wheel   0,  69 Nov 11 22:04
ttyvf




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Re: SSH From within a Jail

2005-11-12 Thread albi
On Sat, 12 Nov 2005 08:59:02 -0800 (PST)
d c [EMAIL PROTECTED] wrote:

 I had the same error even with the -T option.
 
 Here is the ls from /dev in the jail.  Maybe this
 helps?
-- cut --
 crw---  1 root  wheel   0,  67 Nov 11 22:04
 ttyvd
 crw---  1 root  wheel   0,  68 Nov 11 22:04
 ttyve
 crw---  1 root  wheel   0,  69 Nov 11 22:04
 ttyvf

as a comparison here's (partly) mine :

$ ls -la /dev/tty*
crw---  1 root  wheel  240,   0 Nov 10 00:11 /dev/ttyd0
crw---  1 root  wheel  240,   1 Nov 10 00:11 /dev/ttyd1
crw---  1 root  wheel  239,  32 Nov 10 00:11 /dev/ttyid0
crw---  1 root  wheel  239,  33 Nov 10 00:11 /dev/ttyid1
crw---  1 root  wheel  239,  64 Nov 10 00:11 /dev/ttyld0
crw---  1 root  wheel  239,  65 Nov 10 00:11 /dev/ttyld1
crw--w  1 albi  tty  5,   0 Nov 12 18:13 /dev/ttyp0
crw-rw-rw-  1 root  wheel5,   1 Nov 12 14:53 /dev/ttyp1
crw-rw-rw-  1 root  wheel5,   2 Nov 11 23:49 /dev/ttyp2
crw---  1 root  wheel  237,   0 Nov 10 00:14 /dev/ttyv0
crw---  1 root  wheel  237,   1 Nov 10 00:14 /dev/ttyv1

which FreeBSD-release do you use again ?

did you follow the manualpage for jail to set up your jails or did
you use some other Howto ?

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Re: SSH From within a Jail

2005-11-12 Thread d c
I used the man page.
I am using freebsd 6.0
 
Can you ssh from your jails?

albi [EMAIL PROTECTED] wrote:

On Sat, 12 Nov 2005 08:59:02 -0800 (PST)
d c wrote:

 I had the same error even with the -T option.
 
 Here is the ls from /dev in the jail. Maybe this
 helps?
-- cut --
 crw--- 1 root wheel 0, 67 Nov 11 22:04
 ttyvd
 crw--- 1 root wheel 0, 68 Nov 11 22:04
 ttyve
 crw--- 1 root wheel 0, 69 Nov 11 22:04
 ttyvf

as a comparison here's (partly) mine :

$ ls -la /dev/tty*
crw--- 1 root wheel 240, 0 Nov 10 00:11 /dev/ttyd0
crw--- 1 root wheel 240, 1 Nov 10 00:11 /dev/ttyd1
crw--- 1 root wheel 239, 32 Nov 10 00:11 /dev/ttyid0
crw--- 1 root wheel 239, 33 Nov 10 00:11 /dev/ttyid1
crw--- 1 root wheel 239, 64 Nov 10 00:11 /dev/ttyld0
crw--- 1 root wheel 239, 65 Nov 10 00:11 /dev/ttyld1
crw--w 1 albi tty 5, 0 Nov 12 18:13 /dev/ttyp0
crw-rw-rw- 1 root wheel 5, 1 Nov 12 14:53 /dev/ttyp1
crw-rw-rw- 1 root wheel 5, 2 Nov 11 23:49 /dev/ttyp2
crw--- 1 root wheel 237, 0 Nov 10 00:14 /dev/ttyv0
crw--- 1 root wheel 237, 1 Nov 10 00:14 /dev/ttyv1

which FreeBSD-release do you use again ?

did you follow the manualpage for jail to set up your jails or did
you use some other Howto ?

-- 
grtjs, albi
gpg-key: lynx -dump http://scii.nl/~albi/gpg.asc | gpg --import
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Re: SSH From within a Jail

2005-11-12 Thread Xin LI
On 11/12/05, d c [EMAIL PROTECTED] wrote:
 telnet 10.0.0.60 22

 Connected to 10.0.0.60.
 Escape character is '^]'.
 SSH-2.0-OpenSSH_3.8.1p1 FreeBSD-20040419

 If I ssh into 10.0.0.60 from the host system that the
 jail is running on I connect right in w/o any
 problems.

 Just the jails on the host giving me probs.

 I also tried recreating the /etc/ssh/ssh_hostkey but
 that didn;t help

Do you have /dev/*random available in the jail?  Typically there
should be /dev/random and a /dev/urandom which is a symbolic link to
/dev/random.  IIRC there is problem if you don't have these in the
jail if you do some ssh related operations...

Cheers,
--
Xin LI [EMAIL PROTECTED] http://www.delphij.net
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Re: SSH From within a Jail

2005-11-12 Thread Koen Martens
d c wrote:
 Greetings:
 
 I currently am running Freebsd 6.0 Release.
 
 I am experimenting with jails and have run into a
 problem.  I need to ssh from within my jail to another
 server.  Actually I need to use scp.  WHen I try it I
 get the error:  Host key verification failed.

This could also be something related to permissions on the .ssh
directory, but you cleared that out of the way if i understand the
rest of this thread correctly. I remember having this problem once,
but can't remember right now what i did to solve it.. I usually
compile openssh from source anyway, so you might try that. If that
works, it would probably be interesting to see what is the
difference between your own hand-rolled openssh and the one that
came with your world.

Koen

-- 
K.F.J. Martens, Sonologic, http://www.sonologic.nl/
Networking, hosting, embedded systems, unix, artificial intelligence.
Public PGP key: http://www.metro.cx/pubkey-gmc.asc
Wondering about the funny attachment your mail program
can't read? Visit http://www.openpgp.org/
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