17. Layer 2 VLAN Security
18. CCNA LAB NAT Overload
19. Implement IPv4 ACLs
20. DHCP Configuration
21. Cisco Discovery Protocol
22. DHCP, inter-VLAN routing and RIPv2
23. VTP, STP and OSPF
24. Static Routing and DNS
25. EIGRP Summarization, Static NAT, ACLs
26. Multi-Area OSPF, LAN Switching
27. Subnetting Summarization Static Routing and ACLs
28. Configuration of VLANs in Cisco switches
29. Static and Dynamic Routing
30. OSPFv2 and OSPFv3
31. NAT
32. L2 VPN point to point