Identify and fix pluggable authentication (PAM) issues

1 hour
  • 2 Learning Objectives

About this Hands-on Lab

In this exercise, you will need to troubleshoot and resolve authentication issues preventing Samba access.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Verify the Samba service.

Verify the service is running:

systemctl status smb

Attempt to view the listing of shares on the localhost:

smbclient -U cloud_user -L localhost

Password: Welcome1

Resolve authentication issue.

Check /var/log/secure for any errors:

tail /var/log/secure

Check the Samba logs for any errors:

tail /var/log/samba/log.smbd

View the PAM service file:

cat /etc/pam.d/samba

Verify the package to see if any PAM files are changed:

rpm -V samba

Move the changes PAM file to /root/samba.pam.old:

mv /etc/pam.d/samba /root/samba.pam.old

Reinstall Samba to restore the original PAM file:

yum reinstall -y samba

Restart the Samba service:

systemctl restart smb

View the listing of shares on the localhost:

smbclient -U cloud_user -L localhost

Additional Resources

Resolve authentication issues preventing the Samba user cloud_user from listing the Samba shares on the localhost using the password "Welcome1".

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