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How to configure the logging of failed login attempts for vsftpd

by admin

Follow the steps outlined below to configure the logging of failed login attempts using pam.

1. Please add to pam_tally2 line after system-auth or password-auth line in /etc/pam.d/vsftpd file as below :

auth include password-auth
auth required pam_tally2.so deny=5 onerr=fail lock_time=600 serialize
account required pam_tally2.so

For example :

# vi /etc/pam.d/vsftpd
#%PAM-1.0
#%PAM-1.0
session optional pam_keyinit.so force revoke
auth required pam_listfile.so item=user sense=deny file=/etc/vsftpd/ftpusers onerr=succeed
auth required pam_shells.so
auth include password-auth
auth required pam_tally2.so deny=5 onerr=fail lock_time=600 serialize                                   

account include password-auth
account required pam_tally2.so                                                                          

session required pam_loginuid.so
session include password-auth

2. Test logins to vsftpd to confirm attempts are being correctly logged

Note: there should be no need to restart the vsftpd service or reboot the system for these changes to be applied, as a new connection should pick them up, however, if for some reason, this hasn’t occurred, please restart to vsftpd daemon.

Filed Under: CentOS/RHEL 6, CentOS/RHEL 7, Linux

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