f



ssh to ssh

I have the following scenerio:

Remote PC with Xmanager

small linux gateway, with sshd and ssh but no X software

local host with sshd and X software

I am trying to do the following from the remote PC:

ssh -X (gateway addr. x.x.x.x "ssh -X (local host add 192.168.25.40) xterm"

and it is failing. Please help if possible.

Looking at the verbose output I see:

OpenSSH_3.8.1p1, OpenSSL 0.9.7c 30 Sep 2003
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to x.x.x.x [x.x.x.x] port 80.
debug1: Connection established.
debug1: identity file /home/jlodman/.ssh/identity type -1
debug1: identity file /home/jlodman/.ssh/id_rsa type -1
debug1: identity file /home/jlodman/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_
3.7.1p2
debug1: match: OpenSSH_3.7.1p2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.8.1p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-
hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-
cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-c
bc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-
cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-c
bc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160
@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160
@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-
hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-
cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-c
bc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-
cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-c
bc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160
@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160
@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-md5
debug1: kex: server->client aes128-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 122/256
debug2: bits set: 519/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /home/jlodman/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug1: Host '63.200.219.149' is known and matches the RSA host key.
debug1: Found key in /home/jlodman/.ssh/known_hosts:1
debug2: bits set: 504/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/jlodman/.ssh/identity (0)
debug2: key: /home/jlodman/.ssh/id_rsa (0)
debug2: key: /home/jlodman/.ssh/id_dsa (0)
debug1: Authentications that can continue: publickey,password,keyboard-
interactive
debug3: start over, passed a different list publickey,password,keyboard-
interactive
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/jlodman/.ssh/identity
debug3: no such identity: /home/jlodman/.ssh/identity
debug1: Trying private key: /home/jlodman/.ssh/id_rsa
debug3: no such identity: /home/jlodman/.ssh/id_rsa
debug1: Trying private key: /home/jlodman/.ssh/id_dsa
debug3: no such identity: /home/jlodman/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug2: we sent a keyboard-interactive packet, wait for reply
debug1: Authentications that can continue: publickey,password,keyboard-
interactive
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred:
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
debug3: packet_send2: adding 48 (len 61 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentication succeeded (password).
debug2: fd 6 setting O_NONBLOCK
debug2: fd 7 is O_NONBLOCK
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Entering interactive session.
debug2: callback start
debug2: ssh_session2_setup: id 0
debug2: x11_get_proto: /usr/openwin/bin/xauth -f /tmp/ssh-
xeMPv15491/xauthfile generate unix:19.0 MIT-MAGIC-COOK
IE-1 untrusted timeout 1200 2>/dev/null
debug2: x11_get_proto: /usr/openwin/bin/xauth  list unix:19.0 . 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug2: channel 0: request x11-req
debug1: Sending command: /bin/ssh -X 192.168.25.40
debug2: channel 0: request exec
debug2: fd 4 setting TCP_NODELAY
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug1: Remote: No xauth program; cannot forward with spoofing.
debug2: channel 0: rcvd adjust 131072
debug2: channel 0: rcvd ext data 72
Pseudo-terminal will not be allocated because stdin is not a terminal.
debug2: channel 0: written 72 to efd 7
debug2: channel 0: rcvd ext data 31
Host key verification failed.
debug2: channel 0: written 31 to efd 7
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug2: channel 0: rcvd eof
debug2: channel 0: output open -> drain
debug2: channel 0: obuf empty
debug2: channel 0: close_write
debug2: channel 0: output drain -> closed
debug2: channel 0: rcvd close
debug2: channel 0: close_read
debug2: channel 0: input open -> closed
debug3: channel 0: will not send data after close
debug2: channel 0: almost dead
debug2: channel 0: gc: notify user
debug2: channel 0: gc: user detached
debug2: channel 0: send close
debug2: channel 0: is dead
debug2: channel 0: garbage collecting
debug1: channel 0: free: client-session, nchannels 1
debug3: channel 0: status: The following connections are open:
  #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1)

debug3: channel 0: close_fds r -1 w -1 e 7
debug1: fd 1 clearing O_NONBLOCK
debug2: fd 2 is not O_NONBLOCK
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 6.9 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 255
0
jlodman (7)
8/5/2004 6:25:27 PM
comp.os.linux.networking 15677 articles. 0 followers. Post Follow

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
NotDashEscaped: You need GnuPG to verify this message

[ Followup-To the only ng that is valid for me ]

In comp.os.linux.networking Michael Lodman <jlodman@rainbow-networks.com> suggested:
[..]

> ssh -X (gateway addr. x.x.x.x "ssh -X (local host add 192.168.25.40) xterm"

[..]
> debug1: Remote: No xauth program; cannot forward with spoofing.

Install the Xfree package containing 'xauth' (XFree86-xauth* or
alike) and retry.

-- 
Michael Heiming (GPG-Key ID: 0xEDD27B94)
mail: echo zvpunry@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFBEn9vAkPEju3Se5QRAuE2AJ9p/z0X3djrhSVWO7pUNqXubO4XMQCcDK5f
vGkLUge+DJP/PKXT0ZL+PMU=
=hEsG
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0
Michael
8/5/2004 6:41:52 PM
Michael Lodman wrote:

> I have the following scenerio:
> 
> Remote PC with Xmanager
> 
> small linux gateway, with sshd and ssh but no X software
> 
> local host with sshd and X software
> 
> I am trying to do the following from the remote PC:
> 
> ssh -X (gateway addr. x.x.x.x "ssh -X (local host add 192.168.25.40)
> xterm"
> 

You may want to setup port forwarding or something, to avoid SSH'ing an SSH.
0
Patrick
8/6/2004 3:24:19 PM
Reply:

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I have a network consisting of a desktop and laptop linked by wireless. I communicate between them with ssh. With the Y or X switches I can run X applications on the laptop from the desktop but not the other way round. If I try to run X applications on the desktop when on the laptop nothing happens at all - no error message. I have exactly the same entries for X in /etc/ssh/sshd_config on both and also for /etc/X11/Xsession.options. ========================== X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes KeepAlive yes ======================== # /etc/X11/Xsession.options # # configuration options for /etc/X11/Xsession # See Xsession.options(5) for an explanation of the available options. allow-failsafe allow-user-resources allow-user-xsession use-ssh-agent use-session-dbus Any suggestions for what else to check? Anthony -- Anthony Campbell - ac@acampbell.org.uk Microsoft-free zone - Using Linux Gnu-Debian http://www.acampbell.org.uk (blog, book reviews, on-line books and sceptical articles) Anthony Campbell wrote: > I have a network consisting of a desktop and laptop linked by wireless. > I communicate between them with ssh. With the Y or X switches I can run > X applications on the laptop from the desktop but not the other way > round. If I try to run X applications on the desktop when on the laptop > nothing happens at all - no error message. > > I have exactly the same entries for X in /etc/ssh/sshd_config on both an...

Python ssh with SSH Tectia server
Has anyone any experiencing with ssh between a python client and the SSH Tectia server from SSH (ssh.com) ? Does it work? ...

python ssh and Tetia SSH server
Anyone out there any experience of using python ssh modules to connect to the Tetia SSH server from SSH (ssh.com)? ...

ssh called from ssh bug report.
Hi. I have a problem with ssh failing. Some external users send data to our firewall using ssh. $ ssh firewall handle_data args < data When handle_data do a 'ssh real_host handle_data', all works well. But when handle_data do 'iconv -f utf8 -t latin1 | ssh real_host handle_data' the data get cut. I have made a small script to demo the bug: -- cut -- #!/bin/bash # produce output with pauses for (( I=0 ; I < 10 ; I=I+1 )) ; do cat $0 sleep 1 done | ssh localhost 'cat | ssh localhost cat' -- cut -- I have tried different versions: OpenSSH_3.6.1p2 Debian testing OpenSSH_3.7.1p1 Solaris 8 OpenSSH_3.6.1p2 Red Hat Enterprise Linux ES release 3 They all fail i the 2nd loop with 'Resource temporarily unavailable' If I change the last line to ssh localhost 'ssh localhost cat' or to ssh localhost 'cat | cat' all works fine. Regards Jens Henrik Jensen -- Statsbiblioteket Email: jhlj@statsbiblioteket.dk Universitetsparken Tlf: (+45) 8946 2097 DK-8000 Aarhus C Fax: (+45) 8946 2029 ...

launching a kernel on a remote linux machine through ssh from a linux machine
Greetings: I am trying to launch a kernel on a faster linux machine (call it "fast.here.com", IP address "5.5.5.5") and connect it to my local front end (on "lamo.here.com", IP address "7.7.7.7"). Both run Mathematica 5.0.1.0 on Fedora Linux (3 and 2, respectively). The connection goes through ssh. On the front end on lamo.here.com I now try to add a kernel with "Kernel Configuration Options...". If I select as the remote machine the same as my local machine "lamo.here.com", everything works fine. I know I could do this without going through TCP/IP, but just for checking it out: Arguments passed to MLOpen: -LinkMode Listen -LinkProtocol TCPIP String passed to shell to launch kernel: ssh lamo.here.com "math -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName `linkname`" Choosing this to be the notebook's kernel, once I execute the first calculation it pops up a box saying "Link created on 35945@7.7.7.7,35946@7.7.7.7", then asks for the password for lamo.here.com, and everything works fine; I can run calculations as usual. The problem appears when I change the above string to ssh fast.here.com "math -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName `linkname`" (note that only the computer name has changed). When I do the first calculation, I still get a box saying "Link created on 35950@7.7.7.7,35951@7.7.7...

!SSH
I have just mentioned using the riscosinfo>packages>!SSH so I will mention a few notes that might help someone get it going. I have added these lines to the !Boot file. Set UnixEnv$gcc$sfix "ssh" Set UnixEnv$ssh$sfix <UnixEnv$gcc$sfix> because it couldnt find Choices:./ssh and Taskwindow "ssh" -Wimpslot 2000K to !Run !SSH also optionally supports a ./ssh.config file that needs to have access set to private. !SSH does not support RSA and if using RSA on the server prior (as in use with NettleSSH) it will need to be removed to allow DSA authentication to ...

~/.ssh
Is there an environment variable that defines where this directory is to be found? My cygwin installation has $HOME set but still cannot find the $HOME/.ssh directories. In fact, it keeps looking in My Documents (win32). So - therefore, the general question - how can I explicitly define the path to this directory that gets used for so many things. One more point - I am using cvs and :ext: so, I can't use the command line option for SSH (as in -F). cvs invokes SSH by itself transparently - so I don't have a way to provide command line parameters (although, maybe .cvsrc or something. But again, just looking at the general question - can I set an environment variable to change where .ssh/ is to be found. Thanks much, -LIuther LuB wrote: > Is there an environment variable that defines where this directory is > to be found? > > My cygwin installation has $HOME set but still cannot find the > $HOME/.ssh directories. In fact, it keeps looking in My Documents > (win32). > > So - therefore, the general question - how can I explicitly define the > path to this directory that gets used for so many things. > > One more point - I am using cvs and :ext: so, I can't use the command > line option for SSH (as in -F). > > cvs invokes SSH by itself transparently - so I don't have a way to > provide command line parameters (although, maybe .cvsrc or something. > > But again, just looking at the general question - ca...

generating a ssh key without ssh-keygen
I have a server that runs linux (REDHAT) and a client running Solaris. I'd like to connect to the server sshd using a ssh client but the I don't have ssh-keygen in the client. Is there a way in which I can generate the required public and private keys on my server and then put it on my client? abi Abi wrote: > I have a server that runs linux (REDHAT) and a client running Solaris. > I'd like to connect to the server sshd using a ssh client but the I > don't have ssh-keygen in the client. > Is there a way in which I can generate the required public and private > keys on my server and then put it on my client? > > abi > ? I don't quite follow. You know how to use ssh-keygen, and if you have said program on your server you can use it to create a key-pair. Use a floppy and take it to your client. Are you asking how to do this whole process? are you asking how to initiate a ssh connection using a key? clg In article <ukoznctm5ew.fsf@login.ee.iitm.ernet.in>, Abi wrote: >I have a server that runs linux (REDHAT) and a client running Solaris. >I'd like to connect to the server sshd using a ssh client but the I >don't have ssh-keygen in the client. >Is there a way in which I can generate the required public and private >keys on my server and then put it on my client? I could send you one. What are the username and IP address where you intend to install it ? Or you could generate them on the se...

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