I have recently been examining my firewall log files and have noticed tons of port scans that the IDS has failed to pick up. Occassionally, the scans have been going on for hours across my entire IP block.
What is going on with the scanner? Do I need to further fine tune the signatures? It does pickup port scans currently...sometimes even if it is just one SYN scan to one IP address - so it appears sensitive enough.
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...
[toc:faq]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 and UDP are I...