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CCNP Routing Chapter 2 (IPsec (Protocols (Internet Key Exchange (IKE)…
CCNP Routing Chapter 2
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GRE
Description
- Encapsulates nearly any type of data like unicast, multicast
- You can assign IPsec to the GRE tunnel to encrypt the traffic
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NHRP
- DMVPN requires that routers run NHP (Next Hop Routing Protocol)
- NHRP uses the model Hub and Spoke
IPsec
Security Features
- Confidentiality
- Integrity
- Authentication
- Anti replay
Characteristics
- Encryption
- Authentication
Operate Modes
- Transport Mode (Used frequently in VPN Clients)
- Tunnel Mode (Used frequently between site to site tunnels
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Phases
- Phase 1 (ISAKMP) session is established, sets transform set between site to site.
- Phase 2 (Occurs withing the protection of IKE Phase 1),
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