SASE - Configuring Umbrella Security - Basic Setup - How to integrate Umbrella with FMC
Integrate Cisco Umbrella with FMC 7.3 and FTD — register the device as an Umbrella identity so you can apply DNS Security policy from the cloud console.
Posts
The Basics of Networking | Cables, Interfaces and Fiber
Ethernet vs fiber cabling compared — Cat5/Cat6 copper, multi-mode and single-mode fiber, supported speeds from 10Mbps to 10Gbps, and max cable lengths.
The Basics of Networking | Network Protocols | DHCP
How DHCP assigns IP addresses — the DORA process (Discover, Offer, Request, Acknowledge), reservations, leases, and what each packet carries on the wire.
The Basics of Networking | Network Topology Architectures | Spine-Leaf
Spine-leaf network topology explained — how spine and leaf layers deliver scalable, fault-tolerant, low-latency connectivity in modern data centers.
The Basics of Networking | Network Topology Architectures | Tier 1 and Tier 2
Two-tier vs three-tier network topology compared — access, distribution, and core layer roles, and when each fits small or enterprise networks.
The Basics of Networking | TCP and UDP
TCP vs UDP — connection-oriented reliability vs connectionless speed, flow control, error checking, and which protocol fits web, email, gaming, or VoIP.
The Basics of Networking | The most Common Protocols in Networks
Common network protocols cheat sheet — TCP, UDP, IP, HTTP, HTTPS, DNS, DHCP, FTP, SMTP, SNMP — with what each one does and where you encounter it.
Series: The Basics of Networking | Network Elements
Networking fundamentals series introducing routers, switches, firewalls, and access points for IT, infosec, and cloud beginners building a baseline.
The Basics of Networking | Network Elements | Endpoints, Servers and Computers
Endpoints vs servers in a network — what they do, the services servers provide (file, email, DNS, auth, backup), and how they fit alongside network gear.
The Basics of Networking | Network Elements | Firewalls and NGFW
Firewall vs Next-Generation Firewall (NGFW) — packet filtering, deep packet inspection, application control, and user identity for network security.