K1.26 Physical and virtual methods of managing and securing network traffic and their application
within the design of network security architecture:
• physical (for example server management, firewalls and cabling):
o software defined networking (SDN):
▪ transport layer security (TLS) (for example used in banking websites)
o screened subnet
o air gapping
• virtual:
o virtual LAN (VLAN):
o subnets:
o virtual private network (VPN) (for example intranet, file systems, local network systems)
o virtual routing and forwarding (VRF)
o IP security (IPSec)
o air gapping
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