Articles by tag "Dynamic ARP Inspection"

1. Mastering Dynamic ARP Inspection (DAI) on Cisco Switches
   Selene Gong

   43
   The Address Resolution Protocol (ARP) is fundamental to network communication within a Layer 2 broadcast domain, responsible for mapping IP addresses to MAC addresses. However, ARP is inherently vulnerable because it allows any host to send a "gratuitous reply" or forged ARP packet, a technique ...
2. Cisco Catalyst 9200/9300/1300 Security Hardening Guide: DHCP Snooping, DAI and IP Source Guard
   Selene Gong

   18
   Quick Take DHCP Snooping, Dynamic ARP Inspection, and IP Source Guard work as a security chain. DHCP Snooping builds the IP-to-MAC binding database, DAI validates ARP traffic against that database, and IP Source Guard restricts unauthorized source IP traffic. Catalyst 9200/9300 IOS XE ...