Switching on Dennis Mwangihttps://dennismwangi.com/tags/switching/Recent content in Switching on Dennis MwangiHugoen-usTue, 08 Sep 2026 00:00:00 +0000Lab 3: Layer 2 Security Hardening - DHCP Snooping, DAI, and Port Securityhttps://dennismwangi.com/ccna-labs/layer-2-security-dhcp-snooping-dai-port-security/Tue, 08 Sep 2026 00:00:00 +0000https://dennismwangi.com/ccna-labs/layer-2-security-dhcp-snooping-dai-port-security/Configure DHCP Snooping, Dynamic ARP Inspection (DAI), and Port Security with Sticky MAC learning to block rogue DHCP servers, mitigate ARP poisoning, and shut down unauthorized access.