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

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 • PE • CE • Host • PE • CE toPE • IPSEC can be used for : • PE to PE • CE to CE Bryan Gleeson, Page-2

CE to PE IPSEC tunnels • CE • IP/ MPLS • CE • PE • PE • CE/LNS • PE/ LAC • Host • Secure remote access to NB-VPN • Compulsory L2TP/IPSEC tunneling Bryan Gleeson, Page-3

PE to PE IPSEC tunnels • CE • IPSEC tunnel • CE • PE • PE • CE • PE • Host • Can be used for both Layer 3 + Layer 2 NB VPNs Bryan Gleeson, Page-4

CE to CE IPSEC tunnels • CE • IPSEC tunnel • CE • PE • PE • CE • PE • Backbone could be • Non vpn aware; Layer-2 VPN; Layer-3 VPN Bryan Gleeson, Page-5

Routing over IPSEC tunnels • CE • PE • PE • CE • Host • PE • CE Sample scenario: Redundant CE to PE connectivity Bryan Gleeson, Page-6

Associating IPSEC tunnel with VPN • CE • IPSEC tunnel • CE • PE • PE • CE • PE • CE • CE Bryan Gleeson, Page-7

Thank You! Bryan Gleeson, Page-8