Because connection limits are configured for a good reason, this system log message could indicate a possible DoS attack, in which case the source of the traffic could likely be a spoofed IP address. If the source IP address is not totally random, identifying the source and blocking it using an access-list might help. In other cases, getting sniffer traces and analyzing the source of the traffic would help in isolating unwanted traffic from legitimate traffic.
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...