access-group inside-access-out in interface inside
With these commands, only TCP/9890 and ping traffic will be allowed from your internal hosts to the servers. All other traffic will be denied.
For the ICMP portion of your requirements, you will also need to either enable ICMP inspection, or allow echo replies on an access-list applied to the interface that the 192.168.90.0/24 resides off of.
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...