Remember AH
Full name: Authentication Header
Memory aid: Authentication rides in a Header.
AH does not provide payload encryption.
Study area: Protocols & logical ports · Batch 5
Relevant study for: CompTIA A+ Core 1 220-1201 · CompTIA Network+ N10-009 · CompTIA Security+ SY0-701 · Cisco CCNA 200-301 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
AH — Authentication Header
Provides IPsec integrity and origin authentication for supported packet fields.
Why learn AH — Authentication Header?
Provides IPsec integrity and origin authentication for supported packet fields.
Where it came from
AH does not provide payload encryption.
- Memory aid (a learning cue, not the expansion): Authentication rides in a Header.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand AH: Authentication Header.
- Recall this memory aid: Authentication rides in a Header.
- Explain the practical use: Provides IPsec integrity and origin authentication for supported packet fields.
- Explain this distinction: AH does not provide payload encryption.
- Identify AH in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 4302 (www.rfc-editor.org)