1. Switch's CAM table poisoning attack -- 2. ARP cache poisoning-based MiM and DoS attacks -- 3. Abnormal ARP traffic detection and prevention -- 4. Network traffic sniffing and promiscuous mode detection -- 5. IP-based denial-of-service attacks -- 6. Reconnaissance traffic -- 7. Packet filtering and inspection -- 8. Router security -- 9. Site-to-site VPN tunnel implementation against eavesdropping attacks -- 10. Remote access VPN tunnel implementation against eavesdropping attacks.