meraki has layer 7 rules to block some mobile applications but not all. We often get requests to block snapchat (Security Applicance/ Firewall) . Currently my MX600 (13.33) is unable to block ultrasurf and other proxy/anonymizers. We've requested this feature to the sales engineer. There are other products that do an effective job at stopping ultrasurf. Meraki is easy to use but lacks enterprise features ... View more