Technology
✍️ Hand-written
Bootstrap Deadlock: When the DC Needs the Cluster That Needs It
A single cluster-hosted Domain Controller created a chicken-and-egg lockup. How we broke it with a second DC built remotely via Mac, iLO and SSH.
#dhcp
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Tutorials
Reducing Layer-2 Insider Threats on Switches with DHCP Snooping + DAI
A staged playbook for rolling out DHCP Snooping, DAI, and IP Source Guard on access networks to defend against rogue DHCP, ARP spoofing, and IP impersonation.