I am trying to setup a VPN LAN - LAN TUNNEL between our branch office abd Head Office. First I will explain my existing setup, we have Leased line 512k between these offices and this acts Primary link with OSPF routing protocol. Now our management wants backup for this LL 512k. So I planned to built a LAN-LAN GRE over IPSEC tunnel through Internet for backup. We have Internet Leased line in Head office and ADSL in our branch office which coming through Internet Router and terminating on Cisco PIX at both the ends. We achieved Phase 1 ISAKMP but still Phase II IPSEC still down. When we check out the pix logs, we can see only Encrypted traffic at one end of pix and only Decrypted traffic at other end of pix, its not happening vice versa. Even OSPF is showing INIT at one end of Router and other end is showing nothing. Please find attached the configuration and logs of this scenario. Kindly analyse this problem and give us a feedback.
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...