Manual IP Blocking: As you mentioned, manually adding known mining IPs to a custom category can be a workaround. Regularly updating this list can help, although it requires constant vigilance to stay ahead of new mining sites. Pros: Direct control over specific IPs, relatively straightforward setup. Cons: Labor-intensive, may not cover all mining sites, requires ongoing maintenance. DNS Filtering: Use the Meraki MX's built-in content filtering options. While you might not have a specific category for crypto mining, you can block access modification. to known mining domains by configuring custom DNS filtering rules. Pros: Blocks access at the domain level, easier to maintain than IP blocking. Cons: Might not catch all mining sites, effectiveness depends on the accuracy of the DNS filtering list. Third-Party DNS Filtering: Consider using third-party DNS filtering services that specialize in blocking malicious or undesirable domains, including crypto mining sites. Some of these services offer free plans for basic usage. Pros: More comprehensive domain blocking, regularly updated lists, usually user-friendly. Cons: Might require additional configuration, some services might have limitations on the number of blocked domains in free plans. Regularly Updated Blocklist: Utilize regularly updated blocklists specifically designed to block crypto mining sites. There are community-driven lists available online that you can incorporate into your Meraki MX configuration. Pros: Community-supported, regularly updated, covers a wide range of mining sites. Cons: Dependency on community updates, might require technical expertise to implement. Consider Upgrading the License: If blocking crypto mining sites is crucial for your organization's security, consider upgrading to the Enterprise Umbrella license or a similar advanced security license that offers more comprehensive content filtering options. Pros: Comprehensive content filtering, dedicated support, ongoing updates. Cons: Additional cost, might require budget approval. ... View more