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.
Posts
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.
The basics of Networking | Network Elements | Routers
What a router does in a network - routing tables, BGP, and NAT - explained for IT beginners learning how data moves between networks and the internet.
The Basics of Networking | Network Elements | Switches
Network switches explained - Layer 2 vs Layer 3 differences, MAC vs IP forwarding, and when to pick a routing-capable switch over a basic access switch.
The Basics of Networking | Network Elements | Wireless Access Points (WAP)
What a wireless access point (WAP) does - bridging Wi-Fi clients to the wired network, extending coverage, and supporting VPN and QoS for users.
The Basics of Networking | Network Elements | Wireless LAN Controllers (WLC)
Wireless LAN Controllers (WLC) explained - central management of multiple access points, security policy enforcement, and QoS for voice and video.
Configure SMTP with Cisco ISE 3 | Import Microsoft 365 Certificates
Fix the SSL trust error when wiring Cisco ISE 3 to Microsoft 365 SMTP - extract the cert chain with OpenSSL and import it into ISE trusted store.
AWS Certified Advanced Networking - Specialty: Documenting Progress
Study plan for AWS Certified Advanced Networking Specialty (ANS-C01): Direct Connect, Transit Gateway, hybrid BGP, VPC routing, and a failed attempt.