* CIA
* Port Security Implementation
* DHCP Snooping Implementation
* PVLAN Implementation-DAI Implementation
* Securing the Switched Data-plane
* IOS Firewall Services
* ASA NAT & ACLs
* AAA,RADIUS and TACACS+
* Cryptography,IPsec,and SSL/TLS
* Digital Certificates with Ipsec Client
* Site to Site IPsec VPNs
* Intrusion Prevention Systems(IPS)