KB-7087: FTP hangs or asks for MFA if user is MFA enabled

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KB-7087: FTP hangs or asks for MFA if user is MFA enabled

Product:

Published:

29 June,16 at 09:21 PM

Rating:

Applies to:

DirectControl 5.3.0 and 5.3.1 on all supported Unix platforms.

Question:

Why do FTP sessions fail to start when the user is required to use MFA?

[root@aix61v2 15:20:05]ftp localhost
Connected to localhost.
220 aix61v2 FTP server (Version 4.2 Wed Oct 1 09:40:05 CDT 2008) ready.
Name (localhost:root): mac
331 Password required for mac.
Password:

^^ process hangs here.

Answer:

Default FTP servers used by Unix operation systems do not support the second prompt from PAM. To workaround this issue, please use the pam.mfa.program.ignore parameter in /etc/centrifydc/centrifydc.conf
Adding this parameter will prevent adclient from asking for MFA through PAM.

AIX:
pam.mfa.program.ignore: ftpd

Solaris:
pam.mfa.program.ignore: proftpd

HPUX:
pam.mfa.program.ignore: ftpd