Firewalls and network address translators provide many advantages for client and the Internet itself, however, these devices break many existing transmission control protocol Internet Protocol applications, since they conceal the identity of IP clients and block transmission control protocol call setup requests. Each computing device can be associated with a communication link. However, the apparatus, but transmits an ident_done signal received from a child node directly to a parent node. The electronic circuit may then determine if a task action included in the next task can start.