Uses of IPSEC with VPNs VPNs Uses of IPSEC with Purpose Outline - - PowerPoint PPT Presentation

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Nov 04, 2023 256 likes •353 views

Uses of IPSEC with VPNs VPNs Uses of IPSEC with Purpose Outline some scenarios where IPSEC can be used with VPNs Identify areas where extensions to IPSEC could be useful Bryan Gleeson, Page-1 VPN Reference Model CE CE PE

SLIDE 1

Uses of IPSEC with Uses of IPSEC with VPNs VPNs

SLIDE 2

Bryan Gleeson, Page-1

Purpose

Outline some scenarios where IPSEC can be

used with VPNs

Identify areas where extensions to IPSEC could

be useful

SLIDE 3

Bryan Gleeson, Page-2

VPN Reference Model

CE
PE
CE
PE
PE
Host
CE
IPSEC can be used for :
CE toPE
CE to CE
PE to PE

SLIDE 4

Bryan Gleeson, Page-3

CE to PE IPSEC tunnels

IP/ MPLS
CE
PE/

LAC

CE
PE
PE
Host
CE/LNS
Secure remote access to NB-VPN
Compulsory L2TP/IPSEC tunneling

SLIDE 5

Bryan Gleeson, Page-4

PE to PE IPSEC tunnels

IPSEC tunnel
CE
PE
CE
CE
PE
PE
Host
Can be used for both Layer 3 + Layer 2 NB VPNs

SLIDE 6

Bryan Gleeson, Page-5

CE to CE IPSEC tunnels

IPSEC tunnel
CE
PE
CE
CE
PE
PE
Backbone could be
Non vpn aware; Layer-2 VPN; Layer-3 VPN

SLIDE 7

Bryan Gleeson, Page-6

Routing over IPSEC tunnels

PE
CE
PE
CE
CE
Host
PE

Sample scenario: Redundant CE to PE connectivity

SLIDE 8

Bryan Gleeson, Page-7

Associating IPSEC tunnel with VPN

IPSEC tunnel
CE
PE
CE
CE
PE
PE
CE
CE

SLIDE 9

Bryan Gleeson, Page-8