Question

FTP will not start on the AS400

Asked by: norwoodhelpdesk

I am running an AS400 with V5R4 OS. When I enter the command STRTCPSVR SERVER(*FTP), I get this error message in the job log:

40   08/25/09  08:15:21.607792  QTMFSRVR     QTCP        *STMT    QTMFSRVR    QTCP
  From module . . . . . . . :   QTMFUTIL                                        
  From procedure  . . . . :   qtmf_IssueMessage__FPcT1ie                      
  Statement . . . . . .  . . :   6670                                            
  To module . . . . . . .. . :   QTMFSRVR                                        
  To procedure  . . . .  . :   main                                            
  Statement . . . . . . . . :   1396                                            
  Message . . . . :   FTP server unable to establish control connection.          
  Cause . . . . . :   The FTP server program could not establish the TCP port for the required control connection. Recovery  . . . :   Check the job log of the failing FTP server job to see if there is any additional error information.  Correct any errors indicated in the job log.  Start the FTP server job again with the STRTCPSVR command. Technical description . . . . .  . . . :   The FTP server program issued the socket call bind, which failed with an errno value of 3401.

Has anyone dealt with this issue before? Thanks for any help.

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Asked On
2009-08-25 at 06:33:56ID24679749
Tags

FTP

,

AS400

Topics

Programming for iSeries / AS400

,

AS / 400

Participating Experts
3
Points
250
Comments
15

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Answers

 

by: Gary_The_IT_ProPosted on 2009-08-25 at 10:02:39ID: 25179654

Please post the 7-character message ID associated with this error.

Did you look at the job log of the failing FTP server job, as per the instructions above?  Please post the job log of the failing FTP server job if it contains additional messages.  You can look at the system history log to determine the name of the job.  Typically starts with QTFTP, and runs under user QTCP.   DSPLOG for the time period when the start failed, or WRKUSRJOB QTCP.

Sounds like some other service may be running on port 21 (FTP server control well-known port), or there is a problem with TCP/IP  Do a NETSTAT, option 3, and see if something is already running on port 21.

OF course, you also need to make sure that TCP/IP is running (STRTCP command)

- Gary Patterson

Check out my EE profile: http://www.experts-exchange.com/M_4382324.html

 

by: norwoodhelpdeskPosted on 2009-08-25 at 11:17:54ID: 25180503

The Message ID is TCP12F3 The job log listed is the job log of the failing job, so the message is sort of redundant. I checked NETSTAT option 3 and nothing is running on port 21. TCP/IP is running. When I key the FTP command from my PC, I key 'FTP S10A3656' and then the FTP prompt appears, but if I type any FTP command, it says 'not connected'. I can ping S10A3656 just fine from the PC, and of course I know it's communicating because I have about 200 users on it. At one time FTP worked, but I'm thinking I have an OS problem, and since we haven't upgraded in almost 10 years, it's way behind.

Don Friday

 

by: Gary_The_IT_ProPosted on 2009-08-25 at 11:29:24ID: 25180636

Don,

What OS version are you running?  I found a few IBM Service references to that message id:

http://www-01.ibm.com/support/docview.wss?uid=nas376829f6e9842ae788625733a004ce352
http://www-01.ibm.com/support/docview.wss?uid=nas293aac516c0dd0c1b8625741b003c6e8b
http://www-01.ibm.com/support/docview.wss?uid=nas3759555e6548effbf8625733a004ce38a

If I were you' I'd try the following, in this order:

End and restart TCP/IP and the FTP service.
Verify I was up-to-date on PTFs, and apply if needed.
IPL

- Gary Patterson

Check out my EE profile: http://www.experts-exchange.com/M_4382324.html


 

by: norwoodhelpdeskPosted on 2009-08-25 at 11:38:48ID: 25180737

Yes, I figured it would probably get down to PTF's. I'm afraid that with the state this system is in, we can't apply any PTF's. The software maintenance expired about 6 years ago, and no PTF's have been applied since. It's V5R4. I've tried stopping and restarting, all the way to re-IPL-ing to get it to start, but to no avail. I guess I will wait for us to replace this old machine with a newer one with a newer OS.

Thanks for your help.

Don Friday

 

by: Gary_The_IT_ProPosted on 2009-08-25 at 12:06:23ID: 25181034

Sure you don't mean V4R5?  V5R4 just came out in 2006, and is still actively sold until early next year (2010).

- Gary

 

by: Gary_The_IT_ProPosted on 2009-08-25 at 12:31:48ID: 25181320

That 3401 error on a bind() operation means that the operations failed due to a permissions issue:

EACCES
3401
Permission denied.
An attempt was made to access an object in a way forbidden by its object access permissions.

Perhaps someone has revoked authority to a required object.  If you are using security auditing, check the security audit journal and see if you got an access violation at about that time on some object.  If not, temporarily enable security auditing and audit authorization failures.  

If the error occurs when the FTP service is started, then the problem is probably with the QTCP profile (or whatever profile FTP is running under).  You could try temporarily granting *ALLOBJ to the profile in question (I wouldn't leave it that way, though) and seeing if that makes a difference.  If you just have a single task that you need to perform, this might get you there, at least until you can determine if the QTCP profile was changed, or if it's rights to required objects were revoked.

- Gary Patterson

Check out my EE profile: http://www.experts-exchange.com/M_4382324.html

 

by: tliottaPosted on 2009-08-25 at 13:13:35ID: 25181746

One possibility that comes to mind -- port restrictions on port 21.

Is this the first time the FTP server has been used?

Tom

 

by: norwoodhelpdeskPosted on 2009-08-26 at 04:05:47ID: 25186242

I typed the wrong version. We are at V5R2M0. We haven't put on PTF's for about 8 years.

For the questiong about access, you can't change a system security profile, at least when I tried to grant *ALLOBJ to QTCP, the system message was 'System user profile cannot be changed'.

As for restrictions, that I'm not sure of, is there a command to check that? Although I have worked on these mid-range systems since the S32, I think I have forgotten more than I learned.

No, it's not the first time FTP has been used. It just stopped working sometime over the last few years.

 

by: stevebowdoinPosted on 2009-08-26 at 06:33:19ID: 25187417

Check the 400's host table and make sure the 400s address is listed.
CFGTCTP then option 10.

Steve

 

by: norwoodhelpdeskPosted on 2009-08-26 at 11:24:32ID: 25190655

Yes, the address is listed.

 

by: tliottaPosted on 2009-08-26 at 13:21:15ID: 25191817

Don:

"Port restrictions" would most likely be set through the menu that is displayed with the CFGTCP command. Use menu option 4=Work with TCP/IP port restrictions.

It's been years since I set a port restriction and it wasn't for FTP. I don't know what FTP might throw as an error in that case, but it seems plausible. For a socket, nothing else comes to mind.

And Steve's suggestion is also valid for V5R2. The full configuration details are a little more complicated than that, but it's a good enough description of where to start. I'd be interested in knowing if it resolved the issue.

Tom

 

by: Gary_The_IT_ProPosted on 2009-08-26 at 14:19:45ID: 25192361

I'm not sure what can cause that bind() 3401 error,  but Steve and Tom's suggestions sound very plausible, and more likely than an object authority issue.

I found a mention of a similar issue here (Tom reponded to this one, too!):  http://archive.midrange.com/midrange-l/200805/msg01052.html

- Gary Patterson

 

by: norwoodhelpdeskPosted on 2009-08-27 at 03:54:13ID: 25196464

OK, it was that easy. It was the port restrictions. For what ever reason, ports 20-21 were restricted to user QPGMR. When I removed the restriction, I started the service and it started right up. I FTP'd in from CMD prompt, and hooked right up.

We sure do forget more than we know on these systems. Thanks to all of you for your help. I'll Accept as Solution Tom's port restrictions.

Again, thanks!

Don Friday

 

by: norwoodhelpdeskPosted on 2009-08-27 at 06:47:51ID: 31620151

Thanks to all.

 

by: tliottaPosted on 2009-08-27 at 18:46:54ID: 25204408

Don:

One additional comment unless you know why the restriction was in place. Track the reason down, and be sure that it no longer exists. A port restriction against FTP might indicate anything from regulatory issues to... well, who knows?

Glad it helped.

Tom

20120131-EE-VQP-002

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