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sunhux

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Openssh : keys generated on ssh server or ssh client


Q1 : basic question:
I have a Windows 2003 running Openssh server & a Linux box (ssh client).
The Linux box is the one that initiate sftp/ssh/scp connection to the Windows
box.  I would like to use key authentication, so are the private+public keys
generated (ie ssh-key-gen) on Windows 2003 or on the Linux box?

Q2:
If the keys are generated on the Windows 2003 Openssh (Ver 3.8p1-1), can
 someone provide the steps to generate the keys & how should the key be
added/processed on the Linux box to enable the Linux box to ssh into the
Windows 2003  box using the keys (ie no password needed)

Q3:
If the keys are generated on the Linux box (RHES 4.5), what's the command
to generate the keys & how should the keys be added/installed on the
Win 2003 box so that the Linux (ssh client) can ssh into the Windows box
without password (ie keys authentication
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sunhux

ASKER


I got a feeling that the ssh keys should be generated on the ssh client
(ie the Linux box in my case) & the public key is then sent to the Win2003
Openssh server.

suppose I have a login id on the Openssh Win2003 server, is
the following steps correct to install the public key into the Openssh
Win2003 server?

$ mkdir -p ~/.ssh If it doesn’t already exist
$ chmod 700 ~/.ssh
$ cd ~/.ssh
$ ssh-keygen -t rsa
$ cat ~/.ssh/id_rsa.pub | ssh remote_loginid@sshserver_hostname ‘mkdir .ssh; chmod 700 .ssh; cat>>.ssh/authorized_keys’
ASKER CERTIFIED SOLUTION
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Arty K
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Public key you can get from Linux after generation.
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Thanks chaps.


2 more clarifications:

a) if my Linux ssh client has multiple (8 to be precise) Unix accounts that need to ssh into
    the  Win2003 Openssh server (all 8 use a common login id on Win2003 to ssh/scp), do
    I need to generate 8 pairs of keys using each of the 8 Unix accounts or I can just use
    root on my Linux box to generate 1 pair & then distribute the keys to the $HOME/.ssh
    directories of each of the 8 Unix accounts & to $HOME/.ssh of the Win2003 id ?

b)when doing ssh-keygen on Linux, should I use dsa or rsa?  Rather which is more
   secure of the two?
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For question (b) above, which of the two ( rsa & dsa ) are supported by OpenSsh
  in Windows 2003?
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ok