How to allow connections in one direction over IPSEC tunnel
I have a customer who wants to connect 4 locations with IPSEC tunnels in a full mesh using ASA 5505's. The catch is that hosts in locations A, B and C are trusted but location D is a partner location so the hosts are not fully trusted. The customer would like hosts in A, B, or C to be able to initiate connections to any host in location D but not allow hosts in location D to initiate connections to anyone in locations A, B or C.
These are all small sites so the ASAs will be the only devices available.
Does anyone have suggestions how I can accomplish this?
Re: How to allow connections in one direction over IPSEC tunnel
Yes it will because the ASA is a stateful firewall. So traffic intiated from site D will be dropped. Traffic returning from site D in response to a connection initiated from one of the other sites will still work.
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...