The document discusses configuring Cisco ASA, an adaptive security appliance that combines firewall, intrusion prevention, and VPN capabilities. It can be used as a security solution for both small and large networks. The document outlines configuring an ASA on GNS3 by setting the interface, IP address, name, and security level. It also provides steps for configuring an ASA using ASDM, such as copying the ASDM image, setting the ASA to load ASDM on reboot, enabling the HTTP server, and launching the ASDM application in a browser.