Restricting network access based on geographical location is a security measure employed to limit access to a system or network from IP addresses originating outside of a specific country. For example, a network administrator might configure a Synology NAS device to deny connections from IP addresses identified as belonging to countries where the organization does not conduct business or anticipate legitimate user access. This is typically achieved by utilizing firewall rules that leverage IP address geolocation databases or services.
Implementing geographical IP blocking can significantly reduce the attack surface of a system, mitigating the risk of malicious activity originating from regions known for high volumes of cyberattacks. It also aids in compliance with regional data protection regulations by ensuring data access is restricted to authorized jurisdictions. Historically, this type of filtering was less common due to the complexity of maintaining accurate and up-to-date geolocation databases. However, with the increased availability of reliable geolocation services and more user-friendly firewall configurations, it has become a more practical and accessible security measure for various organizations and individuals.
