Thats really dependant on what you do and dont want to block from your environment.... there are many different ports associated with attacks... although a lot of the time these ports are used for other functions. I would take a look at your infrastructure and decide what protocols you need to allow through your Firewall (some protocols are assoiciated with certain ports ie. port 21 FTP port 80 and 8080 http etc.) and which you dont and go 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...