https://www.pistack.xyz/tags/passive-dns/ Recent content in Passive-Dns on Pi Stack Hugo en-us Sat, 16 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-16-self-hosted-passive-dns-collection-passivedns-dnsmonster-dnscap-guide/ Sat, 16 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-16-self-hosted-passive-dns-collection-passivedns-dnsmonster-dnscap-guide/ <p>Passive DNS (pDNS) is a network security technique that records DNS queries and responses observed on a network, building a historical database of domain-to-IP mappings. Unlike active DNS lookups, passive DNS captures real traffic — revealing what domains hosts actually resolve, when they resolve them, and to which IP addresses. This data is invaluable for threat intelligence, forensic investigations, and network monitoring.</p>