Rule version AS24-U1-000590 · STIG v3 · 2026-05-28
A denial of service (DoS) can occur when the Apache web server is so overwhelmed that it can no longer respond to additional requests. A web server not properly tuned may become overwhelmed and cause a DoS condition even with expected traffic from users. To avoid a DoS, the Apache web server must be tuned to handle the expected traffic for the hosted applications.
Satisfies: SRG-APP-000246-WSR-000149, SRG-APP-000435-WSR-000148
Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" file:
# apachectl -V | egrep -i 'httpd_root|server_config_file' -D HTTPD_ROOT="/etc/httpd" -D SERVER_CONFIG_FILE="conf/httpd.conf"
Note: The apachectl front end is the preferred method for locating the Apache httpd file. For some Linux distributions, "apache2ctl -V" or "httpd -V" can also be used.
Verify that the "Timeout" directive is specified to have a value of "60" seconds or less.
# cat /<path_to_file>/httpd.conf | grep -i "Timeout"
If the "Timeout" directive is not configured or is set for more than "60" seconds, this is a finding.
Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" file:
# apachectl -V | egrep -i 'httpd_root|server_config_file' -D HTTPD_ROOT="/etc/httpd" -D SERVER_CONFIG_FILE="conf/httpd.conf"
Add or modify the "Timeout" directive to have a value of "60" seconds or less:
"Timeout 60"