A firewall is hardware or software that allows communication only between trusted devices over a network such as the Internet. It safeguards your systems by preventing unwanted connections and sending alerts when unwanted devices try to connect. Firewalls can significantly reduce the risk of compromise or abuse. Firewalls are maintained separately from the computers inside the firewalls, so even insecure systems are protected.

Most operating systems provide a host-based firewall product such as Windows Firewall. For departments, IS&T can discuss options for developing a custom network-level firewall for your needs; costs depend on your configuration requirements.

Learn more about how firewalls work. Those in departments with sensitive information, such as health data or financial data, can learn more about our departmental firewall services.

If you need to protect 50 or more systems, schedule a network design consultation.

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  • Information Security relies on Cisco firewall technology to protect servers and information.... more »