The Internet nowadays is not only a popular vehicle to retrieve and exchange information in traditional ways, such as e-mail, file transfer and Web surfing. It is being used more and more by companies to replace their existing telecommunications infrastructure with virtual private networks by implementing secure IP tunnels across the Internet between corporate sites as well as to business partners and remote locations.
This updated redbook includes the IPSec enhancements provided by Version 3.3 of the IBM Nways Multiprotocol Routing Services (MRS), Nways Multiprotocol Access Services (MAS) and Access Integration Services (AIS) that implement the Internet Key Exchange (IKE) protocol. This redbook also includes other new features, such as the policy engine, digital certificate and LDAP support, and QoS. The VPN scenarios are enhanced to reflect the latest implementation of IPSec and L2-tunneling functionality.
In this redbook we delve further into these scenarios by showing you how to implement solutions that exploit Data Link Switching (DLSw), IP Bridging Tunnels, Enterprise Extender (HPR over IP), APPN DLUR, TN3270, and Tunneling on layer 2 (L2TP, L2F, PPTP) through an IPSec tunnel.
A working knowledge of the IPSec protocols is assumed.