Re: Starting a putty client to my i.

[Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>]

hi Rob,

Hmmm... this doesn't appear to be related to Putty.

The error message is telling you that you already have a program that's 
listening for new connections on port 22.  If I understand you 
correctly, you have an sftp server from Linoma (since sftp is a 
sub-component of SSH, it makes perfect sense that it would also run on 
port 22.)

Or, perhaps someone has already run STRTCPSVR *SSHD...    (Which is the 
recommended way to start sshd on IBM i 6.1 or newer.  Starting it via 
PASE/QShell would've been the recommended approach for older releases. 
Please do NOT use QP2SHELL to start it... either use STRQSH (QShell) or
QP2TERM (PASE).  QP2SHELL uses ILE stdio descriptors, which can cause 
problems with sshd.

Perhaps the easiest workaround to your "address already in use" error is 
to run the OpenSSH program (sshd) on a different port number.  Port 22 
is the default one, but you can override it with the -p switch. For example:

QSH CMD('/QOpenSys/usr/sbin/sshd -p 22022')


This starts sshd on port 22022 instead of the default port 22.  When you 
run Putty, you'll need to specify the port in the Putty window as well 
(it should default to port 22 for ssh, but you can change it to 22022.)

If you're going to use your system as an SSH (or SFTP) server for other 
clients, such as the command-line ssh, scp or sftp tools, the same thing 
applies, i.e. you'll need to specify an alternate port number when you 
run those tools as well.

-SK


On 7/26/2012 2:19 PM, rob@xxxxxxxxx wrote:
> I ran
> SBMJOB CMD(CALL QP2SHELL PARM('/QOpenSys/usr/sbin/sshd')) JOB(SSHD)
> JOBQ(QUSRNOMAX)
> WRKACTJOB SBS(QUSRWRK)
> shows one SSHD job running.  This part in the joblog concerns me:
> sshd[21689]: error: Bind to port 22 on 0.0.0.0 failed: The socket name is
>    already in use..
> sshd[21689]: Server listening on :: port 22.
>
> netstat *cnn shows it using 208.87.xxx.yyy.  nslookup shows that address
> is our sftp server.  That job
> Status of job . . . . . . . . . . . . . . . :   ACTIVE
> Current user profile  . . . . . . . . . . . :   ROB
> Job user identity . . . . . . . . . . . . . :   ROB
>    Set by  . . . . . . . . . . . . . . . . . :     *SYSTEM
> Entered system:
>    Date  . . . . . . . . . . . . . . . . . . :   07/03/12
>    Time  . . . . . . . . . . . . . . . . . . :   14:50:14
> Started:
>    Date  . . . . . . . . . . . . . . . . . . :   07/03/12
>    Time  . . . . . . . . . . . . . . . . . . :   14:50:14
> Subsystem . . . . . . . . . . . . . . . . . :   GASERVICES
>    Subsystem pool ID . . . . . . . . . . . . :
> is Linoma's stuff.  However I am trying to open a putty client not to our
> sftp server but that i itself.  netstat *ifc shows a plethora of IP
> addresses.
>
> Is there a way to configure the ssh daemon used by the above SBMJOB to
> link to a specific address and not to all?
> Is this what I have to get working to allow me to use my putty client and
> bypass "Network error: Connection refused"?
>
>
> Rob Berendt