DCD wrote: » Packet tracer will work for most of the CCNA Security but it does not have the ASA. You will need the IOS security on whatever router you buy. For Zone base firewalls and VPN's. The ASA is what going to cost you the most. From the Cisco site; [TH]CCNP Security Prerequisite[/TH] CCNA Security or valid CCSP or any CCIE certification can act as a prerequisite.