Network
Technical guides on Network.
-
NAT Explained: SNAT, DNAT, One-to-One NAT and Port Forwarding
Follow how NAT changes packet addresses and ports, distinguish SNAT and DNAT, and understand the return path and firewall requirements.
-
OSI and TCP/IP Layers: Follow Data from an Application to the Wire
Map the OSI and TCP/IP models, follow encapsulation, and distinguish the roles of IP addresses, MAC addresses and ports.
-
[Kubernetes Lab 04] Build the Cluster and Connect Calico
Initialize the control plane, join the workers and check Calico networking before deploying applications.
-
[Kubernetes Lab 06] Service DNS and Access from Windows
Trace ClusterIP, Service DNS and NodePort traffic, and choose the correct address when accessing the lab from Windows.
-
[Kubernetes Lab 08] RBAC, NetworkPolicy and Pod Permissions
Control API access with RBAC, limit Pod traffic with NetworkPolicy, and check workload execution permissions in the lab.