VLAN(Virtual LAN)
A logical network segment that isolates traffic on shared physical switches.
Separate IoT devices, guest Wi-Fi and your server LAN with VLANs to limit blast radius if something is compromised.
Related articles
Subnet
A logical subdivision of an IP network, defined by a mask that separates the network and host portions of an address.
PoE(Power over Ethernet)
Delivering electrical power to devices like access points and cameras through Ethernet cables.
Firewall
Software or hardware that controls which network traffic is allowed in or out based on rules.