What is ZTNA (Zero Trust Network Access)?
D3 · Architecture · CompTIA Security+ SY0-701ZTNA (Zero Trust Network Access) is an approach to secure remote access that applies zero trust principles — granting access to specific applications based on verified user identity, device posture, and context, rather than providing broad network access like a traditional VPN.
Traditional VPN: authenticate → access the entire network.
ZTNA: authenticate → access only specific authorized apps (micro-segmented access).
ZTNA eliminates implicit trust and lateral movement risk that comes with traditional VPN.
Traditional VPN: authenticate → access the entire network.
ZTNA: authenticate → access only specific authorized apps (micro-segmented access).
ZTNA eliminates implicit trust and lateral movement risk that comes with traditional VPN.
ZTNA is the zero trust replacement for VPN. VPN = network-level access (too broad). ZTNA = application-level access (least privilege). SDP (Software-Defined Perimeter) is similar to ZTNA. Key benefit: even if credentials are compromised, the attacker can only access authorized apps, not the whole network.