Well the split tunneling option is usually configured on the VPN termination device is PIX or concentrator where the policy is pushed to the vpn client. Usually when setting up the split tunneling option you will have an access-lists matching destinations to be encrypted defined if it's not defined all traffic is encypted and sent to the vpn endpoint.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...