A method and system for providing security to a Network Job Entry (NJE) network. A first NJE node and a third NJE node are connected by a second NJE node. The second NJE node conducts a security check of NJE packets traveling between the first and third NJE nodes. The security check performed by the second NJE node includes checking the userid of the person or job that sent the NJE packet, as well as the NJE data type. The NJE data type may be classified by the type of operation being performed, such as a batch job, sysout, command, message, as well as what application is being used. In one preferred embodiment, the security check includes checking the security level of the source of the data being transferred, such as a sensitive application. The security check can be based on the size of the data packet, such that excessively large data packets from a particular user are not permitted to be transmitted outside a secure NJE network.