What log is HT_ACCESS log?

[bulgin23]

I know this might sound like a dump question but the following snippet of direction is provided in csf.conf:

Code: Select all

 This option will keep track of the number of "File does not exist" errors in
# HTACCESS_LOG. If the number of hits is more than LF_APACHE_404 in LF_INTERVAL
# seconds then the IP address will be blocked
#
# Care should be used with this option as it could generate many
# false-positives, especially Search Bots (use csf.rignore to ignore such bots)
# so only use this option if you know you are under this type of attack
#
# A sensible setting for this would be quite high, perhaps 200

But *what file* is referenced or searched, for these hits? I'm on a centos 7 server with access_log domlogs error_log modsec_audit modsec_audit.log modsec_debug.log and suexec_log in /var/log/apache2/

In this case it is access_log or error_log? No where in the config file can I find a description of the actual file(s) that are searched for the HTTACCESS_LOG.

Thanks.