(Cisconetworkassistant (CNA) can be used to configure Cisco devices, such as catalyst switches, pix firewalls, IP phones and wireless access points. Cna supports them as long as they are facing small and medium-sized enterprises. Cna provides many functions and wizards. Cna provides configuration, monitoring, troubleshooting and maintenance, through which we can manage network devices more conveniently Set up security management)