i have cisco 1841 in main office connected by IPsec tunnel to a branch office with cisco 877, before installing the c877 the ipsec tunnel was working using a 3rd party router now its up but usless as the c877 firewall drops most connections & i can't understand why?
my question is what are the default setting which come with c877 firewall? & how to set it to get communication between the child domain in the branch office & the parnet domain in main office? esepcially we have exchange & terminal server in both sides, also this is preventing users with cisco VPN client as they could connect but their RDP request times out. thanks for any suggestions
i want to get L2L tunnel working between the c1841 & C877 as it was before between the c1841 & 3rd party router. without the firewall problem denying access to users from other site other than this site.
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...