B Lang
Network operationsInfrastructureSoftware
I work across networking, software, automation and security — building things, untangling problems, and figuring out how complex systems fit together.
- AWS Certified Cloud Practitioner
- Studying CCNP Enterprise
- West Palm Beach, FL
Writing
2026-09-05
Demistifying Access Control Lists
Breaking down ACLs and NAT
2026-09-02
Building an OSPF framework
Laying out 3 routers on a broadcast network and 2 routers on a /30 network.
2026-09-01
Adding VTP to the L2 triangle
VTP quietly refused to let a config file add a VLAN to the database until the switch was in transparent mode. One command found it.
2026-08-30
Building a dedicated CML management plane
Two physical NICs, two VLANs, and a DHCP broadcast that had to cross six boundaries before it reached a simulated switch. What was actually broken at each one, and how I proved the path.