1. A non-transitory machine-readable storage medium encoded with instructions executable by a processor of a computing device to: determine that a target network tier is a processing type network tier, if a backend communication protocol utilized between the target network tier and a backend network tier is different than a source communication protocol utilized between the target network tier and a source network resource; if the source and backend communication protocols are the same, compare select content of respective backend communications between the target and backend network tiers to select content of respective source communications between the target network tier and the source network resource; and determine that the target network tier is a forwarding type network tier if, for at least a threshold amount of the backend communications, the select content of a respective backend communication matches the select content of a respective source communication.