A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a rule set. A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is not assumed to be secure and trusted.
Firewalls are utilized as one of many layers of security defenses at UNL. UNL security and networking manage firewalls for UNL. The security team works closely with the UNL networking team to help ensure the security and safety of protected information.