The customer currently lacks visibility into the Layer 7 application traffic on port 53, which is typically used for DNS. Palo Alto Networks' App-ID technology can identify applications traversing the network irrespective of the port, protocol, or encryption (SSL or SSH). By using App-ID, the customer can gain visibility into the specific applications being used, even if they are running over standard ports such as 53. This capability not only identifies the applications but also allows for granular control over them, enabling the customer to block unsanctioned applications if necessary.