VPNs and tunnels
Topic 15 of 26. 0 questions:
What this topic covers
- site to site vs remote access
- GRE and why GRE over IPsec
- AH vs ESP
- transport vs tunnel mode
- IKEv1 phase 1 and phase 2 main vs aggressive mode
- IKEv2 differences
- security associations and SPI
- crypto maps vs VTI
- NAT traversal UDP 4500
- Diffie Hellman groups
- PFS
- DMVPN phases 1 2 3 and NHRP
- SSL VPN vs IPsec client
- WireGuard
- a tunnel that is up but passes no traffic
- MTU and MSS in tunnels
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