*WARNING* Cannot use DROP_OUT value of [] on this server, set to DROP

[peopleinside]

Hi, i have this warning:

*WARNING* Cannot use DROP_OUT value of [] on this server, set to DROP

How i can fix this?

Thanks.

Marco

[erleq]

Same here! Doing a "csf -ra", I got this same warning:

Aug 02 19:16:32 prod systemd[1]: Started ConfigServer Firewall & Security - lfd.
*WARNING* Cannot use DROP_OUT value of [] on this server, set to DROP

Googling, I didn't find any solution or track to fix this warning.
What do you think?

TIA

-
EDIT: OpenVZ VPS with CentOS 7, Webuzo as control panel.

[peopleinside]

Last update of today seems has removed the warning.