I have configured L2TP authenticating against a RADIUS server. The user authenticates and gets assigned an IP from the defined IP pool. The user can ping the PIX inside interface, however the user cannot communicate with inside devices. Inside devices have private IP 172.18.0.0. The PIX inside interface is 172.25.1.0 net. From the PIX I can ping all inside devices.
Here is my snap shot of my config.
IP address pool:
ip local pool atest 192.168.1.1-192.168.1.254
Access-list to permit VPN traffic
access-list vpn permit ip 172.25.1.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list vpn permit ip 172.18.0.0 255.255.0.0 192.168.1.0 255.255.255.0
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...