[CentOS] SFTP - Private/Public Authentication Keysets Beyond The First Set

Wed Dec 12 20:23:18 UTC 2018
Steve Clark <steve.clark at netwolves.com>

On 12/12/2018 03:13 PM, Gary Braatz wrote:
> I'm new to SFTP and using this mailing list was able to successfully create
> my first Private/Public keyset for a vendor hosting the SFTP server (I'm the
> client).  I created the keyset by typing this:
>
>  
>
> # ssh-keygen -t rsa
>
>  
>
> When asked for the password/passphrase I hit <Enter> and afterwards "id_rsa"
> and "id_rsa.pub" were created in "/root/.ssh/".  I provided "id_rsa.pub" to
> the vendor and when told they were ready I initiated an SFTP transfer.
> During the first connection I was asked for the vendor-provided password and
> after entering it was successfully connected to the vendor's sftp server.
> During successive connections I was not again asked for the password.  This
> allowed me to create fully automated batch file transfers.my objective.
> Setting up my second vendor is not going as smoothly.
>
>  
>
> I did exactly the same thing for my second vendor with the exception of
> typing "rsa_vendor2" during keyset generation (I assumed I had to use a
> different name for the new keyset).
>
>  
>
> # ssh-keygen -t rsa_vendor2
>
>  
>
> Files "id_rsa_vendor2" and "id_rsa_vendor2.pub" were created in
> "/root/.ssh/" and I gave "id_rsa_vendor2.pub" to the second vendor.  I
> initiated the first connection with the second vendor and was asked for the
> vendor-provided password which I entered and a successful connection was
> made.  The problem is unlike with the first vendor I am asked for the
> password every time I connect to the second vendor's server.  Because I am
> being asked for the password I am unable to create fully automated batch
> file transfers.
>
>  
>
> The second vendor is telling me they added the public key to their server as
> required.  Did I miss a step or do something wrong on my end?  Was I correct
> using a different name for the new keyset or would the new keyset
> information have been appended to the information already in id_rsa and
> id_rsa.pub for the first vendor?
>
>  
>
> Any help you can provide will be greatly appreciated.
>
>  
>
> _______________________________________________
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>
Are using the -i flag in your invocation of sftp to the second vendor?
>From the sftp man page:

     -i identity_file
             Selects the file from which the identity (private key) for public key authentication is read.  This option
             is directly passed to ssh(1).

-- 
Stephen Clark
*NetWolves Managed Services, LLC.*
Sr. Applications Architect 
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com