For additional security and preventing un-authorized IP addresses from accessing Matomo (Piwik) dashboards, you can configure a set of allowed IP addresses. Since Matomo 3.6 you can also configure hostnames. However, please consider that any hostname will be resolved within each request. This may slightly slow down your Matomo.
IP addresses can be allowlisted by adding them under your
[General] section in config/config.ini.php:
login_allowlist_ip = 18.104.22.168 login_allowlist_ip = 204.93.240.* login_allowlist_ip = 22.214.171.124/24 login_allowlist_ip = 2001:db8::/48 login_allowlist_ip = matomo.org
When configured, only users from a configured IP address can log into your Matomo. You can define one or multiple ; IPv4, IPv6, and IP ranges.
By default, if a allowlisted IP address is specified via
login_allowlist_ip then both the reporting user interface as well as HTTP Reporting API requests will only work for these allowlisted IPs. But in some cases you need to allow all IP addresses access to your Matomo HTTP Reporting API endpoint. To allow all IP addresses to access the Matomo Reporting API, set in your config file under
login_allowlist_apply_to_reporting_api_requests = 0
When allowlisted IP addresses are configured and you try to access Matomo but your IP is not allowed, you will see an error like this: “You cannot use this Matomo as your IP 126.96.36.199 is not allowlisted”.