1. A computing device for increasing network security, the computing device comprising: one or more processors; and one or more computer-readable media having stored thereon computer-executable instructions that are executable by the one or more processors to configure the computing device to perform at least the following: receive an initial packet from an other computing device; verify the initial packet for a proper credential; when the proper credential is not verified, drop the initial packet; and when the proper credential is verified: send an acknowledgment to the other computing device only; and receive one or more subsequent packets from the other computing device without verifying that the subsequent packets have a proper credential, wherein the verification of the initial packet is performed independent of whether a device identifier or a user identifier of the other computing device is recognized by the computing device.