I'm switching from a checkpoint firewall to an asa5500. I have 2 question's that i hope don't sound to stupid. In writing rules first do i apply the rule to the interface closest to the source device as an incoming rule, and second do i need to write reverse rules also? Thank you in advance.
Let me clarify some. We start by only allowing all our internal systems a limited amount of out bound services so from there i need to allow anything that this or that system may need to use. Here is an example of what id need to do:
I have a group of internal servers that need to connect to a group of external servers, remembering that above i have already only allowed certain traffic such as 80 & 443 out using the deny any any to block everything else. here is an example of the rule to allow the two server groups to communicate.
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...