Re: Standard template for a ASA Firewall 5520 & Router which is
By default the ASA allows all outgoing traffic and blocks all incoming traffic. Therefore you need to specify with ACLs the traffic that you want to handle in a different way. i.e If you have a web server inside the ASA (allow port 80 through the ASA to the IP of the server)
The router by default permits all traffic in all directions, so you can apply ACLs as well.
Determine what services need to be allowed (inbound) and if something has to be filtered (outbound), and we start from there.
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...