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Step-by-step visual guide showing a user enabling two-factor authentication: open account settings, choose 2FA, scan QR with authenticator app, enter code, confirm setup. Securely.

Diagram showing DNS security concepts: DNSSEC chain of trust with signed records and keys, and encrypted DoH queries over HTTPS protecting privacy; blocking tampering and spoofing.

Screenshot of Wireshark capture window displaying live packet list, protocol details, and packet bytes pane; filters applied to isolate HTTP and DNS traffic for analysis. Overview.

2025 network segmentation best practices diagram: microsegmentation, zero trust zones, RBAC, encrypted east-west traffic, automated policy orchestration, continuous monitoring. ops

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Network traffic visualization showing suspicious connections, anomalous packet flows, indicators and behavioral anomalies, with alerts to detect malware activity across many hosts.

Diagram of NAT translating private IPs to a public IP, showing inside/outside networks, port mappings, router performing address and port translation for outbound/inbound traffic..

Graphic depicting securing SSH connections: a terminal showing key-based authentication, a public key pair icon, padlock, and remote server confirming encrypted, passwordless login.

VPN setup illustration for Windows and Linux: user opens network panel or terminal, enters server, protocol and credentials; interface shows secure encrypted tunnel active on PCs..

Stylized diagram of TCP/IP stack showing application, transport, network, link layers, packets flowing across routers and hosts, ports, IP addresses, handshake arrows data streams.

Isometric of a secure Linux firewall: matte-gray server with penguinemblem, glass shield embossed padlock, partial brick firewall, glowing teal network lines to globe and devices..