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Users With nologin Shell Unable to Login to FTP

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edited Jan 7, 2023 11:32AM in Linux

Applies to:

Oracle Cloud Infrastructure - Version N/A and later

Linux x86-64


Symptoms

Users with default shell /sbin/nologin configured in /etc/passwd, are not able to login via FTP in Oracle Linux 7.


Cause

The vsftpd service, by default verifies that the user's shell is valid. If the user’s default shell is not present in /etc/shells, the login fails.

For security reasons, /sbin/nologin is not present in /etc/shells, causing FTP login to fail.


Solution

Adding /sbin/nologin to /etc/shells solves the problem, but is considered a security flaw and NOT recommended.

A better option is to comment out the following line in /etc/pam.d/vsftpd : 

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