DSE security knowledge hub

IT
Knowledge

Page 113 of the DSE IT knowledge center, with source-backed guidance and practical next steps.

DSE-authoredOfficial sourcesReviewed guidance
Search the library
Explore this topic

IT knowledge center

Production-minded guidance for endpoints, servers, updates, cloud services, administration, and supportable operations.

Start with the cornerstone guide
DSE post stream

IT

1,513 articles
DSE visual briefNetworks & infrastructure

Synchronize OSPFv2 link-state databases before shortest-path calculation

During Exchange, adjacent OSPF routers describe their link-state databases; missing or newer LSAs populate the link-state request list. A router sends Link State Requests until the request list is empty, then a Loading adjacency advances to Full.

Published Reviewed 3 min readBy DSE Security Editorial Team
Read the checklist
DSE visual briefNetworks & infrastructure

Validate host IP, UDP, and TCP duties at their layer boundaries

A host must verify the IPv4 header checksum on every received datagram and silently discard a datagram with a bad checksum. A host must generate and validate UDP checksums, enable checksum generation by default, and silently discard a received nonzero checksum that is invalid.

Published Reviewed 3 min readBy DSE Security Editorial Team
Read the playbook
DSE visual briefNetworks & infrastructure

Assign the Windows DNSSEC Key Master only to a qualifying authoritative server

The Windows DNSSEC Key Master generates and manages cryptographic keys for a signed zone. Only one DNS server can be Key Master for a specific zone at a time, and it must be an authoritative primary capable of online signing.

Published Reviewed 3 min readBy DSE Security Editorial Team
Read the briefing