topic scp from local to other hosts in Operating System - HP-UX

scp from local to other hosts

Prashant Zanwar_4 — Mon, 20 Dec 2004 16:54:53 GMT

Hi,
I have got a Linux host. I am having some file which I need to remote host to destination location.
scp $file pzanwar@host:/etc/mail/aliases

says permission denied.
What I tried doing is sent the file to my home directory and then ssh sudo cp -p ~pzanwar/ /etc/mail/aliases

This says destination shud be directory..

I want to know y scp is failing first. and how do i acheive this. same happens with mv also.
password gets through..though
Prashant

Re: scp from local to other hosts

Sanjay_6 — Mon, 20 Dec 2004 17:01:02 GMT

Hi,

try this as,

scp $file root@host:/etc/mail/aliases

hope this helps.

Regds

Re: scp from local to other hosts

Prashant Zanwar_4 — Mon, 20 Dec 2004 17:40:36 GMT

I have sudo setup in my environment, I have sudo access to all hosts. Problem is how to use that with scp, or how do i get myself authenticated as root if I use scp?
Thanks
Prashant

Re: scp from local to other hosts

Ralph Grothe — Tue, 21 Dec 2004 04:07:00 GMT

I'm not sure how sudo integrates in SSH as far as authentication and authorization are concerned.
I suppose both can use the pluggable authentication modules (PAM).
But this is a matter of how the tools were compiled and how they are configured.
At least from the OpenSSH sshd_config I know that there exists a directive UsePAM, and that the by HP distributed "Secure Shell" for HP-UX (which is a build from OpenSSH) has PAM support enabled and comes with sshd.pam.* libs.

Is your root access on the remote host fully restricted by sudo, or do you have a chance to place files in root's home dir?
If the latter is true you can either create a ~root/.shosts file (not the preferred method), or create a key pair of your local account and append it to ~root/.ssh/authorized_keys on remote host.
But you have to know how the remote sshd is configured, i.e. be able to look at its sshd_config to see what is allowed.
There are too many directives that rule the behaviour of the remote sshd for me to spell them all out here.
If you were able (and willing, caveat security policy) to post the contents of the sshd_config of remote host here we could advise you what would work, and probably what would be advisable as Dos and Don'ts.

Re: scp from local to other hosts

Prashant Zanwar_4 — Tue, 21 Dec 2004 10:57:51 GMT

I cannot disclose any security policy for obvious reasons...

Suggestion is good though. Thanks a lot.
I will probably take help of security guys to make this work.

Thanks a lot.
Prashant

Re: scp from local to other hosts

RAC_1 — Tue, 21 Dec 2004 11:03:56 GMT

Your following syntax is wrong.

ssh sudo cp -p ~pzanwar/ /etc/mail/aliases

You need to as follows. (As a pzanwar user)

sudo scp $file root@host:/etc/mail/aliases
I assume that you have set root user for authentication.

Anil

Re: scp from local to other hosts

Michael Selvesteen_2 — Tue, 21 Dec 2004 23:52:05 GMT

Hello,

Try the following,

cat $file | ssh RemoteMachine 'cat >> /etc/mail/aliases'

Permisson Denied problem may arise,due to

1. Your account may expired in remote machine.
2. You may not have nescessary privileges
to create a file in remote machine.

Try the following,

1. Run scp in debug mode as follows
scp -v $file username@remotehost:/dest/dir

It can figure out possible causes of problems.

2. If possible run the server in debug mode to find the fault.

Hope this helps.

--
M