Other Posts Tagged "DNS"

Plan and Test VLAN Segmentation for a Homelab

2026-10-10 (Modified: 2026-10-10) — Written by SimeonOnSecurity — 11 min read

Build a homelab VLAN plan for trusted devices, servers, IoT, and guests. Map allowed traffic, configure the network in stages, and test isolation.

A homelab router and switch separating laptops, servers, IoT devices, and guests into protected network zones. — Plan VLAN boundaries, then test every allowed and denied path.

#DHCP #DNS

Learn more →

Cisco CCNA (200-301): IP Services

2025-01-01 (Modified: 2026-10-10) — Written by SimeonOnSecurity — 5 min read

Configure and verify CCNA v1.1 NAT and DHCP in a two-router lab, then assess time synchronization, logging, SSH, and QoS with bounded evidence.

A digital illustration of a futuristic control panel with glowing buttons, set against a dark cityscape filled with servers and routers, symbolizing network management and IP services. — Master IP Services for the CCNA 200-301 Exam

#Cisco CCNA #200-301 #DHCP #DNS #SSH

Learn more →

Cisco CCNA 200-301 v1.1 Course and Lab Guide

2025-01-01 (Modified: 2026-10-10) — Written by SimeonOnSecurity — 4 min read

Build a six-stage Packet Tracer lab for CCNA 200-301 v1.1. Verify subnetting, VLANs, OSPF, NAT, access controls, automation, and fault recovery.

An illustration of a modern training environment for Cisco CCNA exam preparation, featuring a laptop with a network diagram, routers, and switches, all set against a dark background with vibrant colors. — Build and verify a CCNA 200-301 practice network

#Cisco CCNA #200-301 #networking #subnetting #IPv4

Learn more →

CompTIA A+ (220-1201): Networking Fundamentals

2025-01-01 (Modified: 2026-10-10) — Written by SimeonOnSecurity — 3 min read

Master networking for the CompTIA A+ 220-1201 Core 1 exam. Learn TCP and UDP ports, wireless technologies, networked host services, network hardware, SOHO configuration, and tools.

A digital illustration of a modern networking setup featuring routers, switches, and access points with colorful cables and wave signals on a dark background. — Master Networking Fundamentals for the A+ 220-1201 Exam

#CompTIA A+ #220-1201 #networking #TCP #UDP

Learn more →

Linux+ XK0-006 Troubleshooting

2025-01-01 (Modified: 2026-10-10) — Written by SimeonOnSecurity — 5 min read

Master Linux troubleshooting for the CompTIA Linux+ XK0-006 exam. Diagnose storage, network, DNS, CPU, memory, authentication, boot, service, and package problems with real commands.