PK78526: FTP CLIENT AND SERVER LOADS THE KERBEROS DLL AT STARTUP, RATHER THAN ONLY WHEN KERBEROS SUPPORT IS DESIRED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The FTP sever and client load the kerberos dll (EUVFKDLL) at
  startup.  If the kerberos dll cannot be loaded, the FTP server
  will take abend806 and a ceedump.  In the CEEDUMP, you will see
  message CEE3501S The module EUVFKDLL was not found.  For the
  FTP client, you will also see the CEE3501S The module EUVFKDLL
  was not found.  The server and client should only load the
  kerberos dll when kerberos authentication is needed.
  .
  KEYWORDS: kerberos dll ftpd abend806 abends806 CEEDUMP
  .
  Additional Symptom: ABENDU4039 U4039
  
     Systems that have the library containing EUVFKDLL in the
     search order but do not have that library defined in a SAF
     PROGRAM profile will receive an 'Uncontrolled Environment'
     message (ICH420I for systems using RACF, other products will
     have different messages) followed by:
        BPXP014I ENVIRONMENT MUST BE CONTROLLED FOR DAEMON
                 (BPX.DAEMON) PROCESSING.
    In this case, the FTP server may fail the password with:
        530 PASS COMMAND FAILED
  

Local fix

• Ensure that SYS1.SIEALNKE is in LNKLST.  This way, when FTP
  FTP tries to load the dll at startup, it will be found.
  
  If the Uncontrolled Environment message is encountered, then
  add SYS1.SIEALNKE to the appropriate PROGRAM profile.  For
  systems using RACF, this can be accomplished by the following
  command:
     RALTER PROGRAM * ADDMEM('SYS1.SIEALNKE'/'volser'/NOPADCHK)
        UACC(READ)
     SETROPTS WHEN(PROGRAM) REFRESH
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 8, 9 and 10    *
  *                 IP: FTP                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: The FTP server is erroneously loading   *
  *                      the kerberos dll (EUVFKDLL) at startup. *
  *                      If the kerberos dll cannot be loaded,   *
  *                      the FTP server will take ABEND806 and   *
  *                      a CEEDUMP.  In the CEEDUMP, you will    *
  *                      see message CEE3501S The module         *
  *                      EUVFKDLL was not found.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The FTP server had one reference to a kerberos variable that
  did not use the local vector copy, causing the load of the
  kerberos DLL at start up.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

• FTP has been corrected.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UK43535 UK43536 UK43537

Modules/Macros

• EZAFTPFR
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1A0 PSY UK43535

     UP09/02/26 P F902

• R180 PSY UK43536

     UP09/02/26 P F902

• R190 PSY UK43537

     UP09/02/26 P F902

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.