Firewall Solution

Secure the firewall. ... Establish firewall zones and an IP address structure. ... Configure access control lists (ACLs) ... Configure other firewall services and logging. ... Test the firewall configuration. ... Manage firewall continually. A firewall is a network security device designed to monitor, filter, and control incoming and outgoing network traffic based on predetermined security rules. The primary purpose of a firewall is to establish a barrier between a trusted internal network and untrusted external networks.