Recently, I've been seeing a lot of 2152 ICMP Flood traffic generated from workstations to a DNS/Active Directory server. I checked the workstations and they are clean of virus/trojan/malicous users/etc..., I enabled packetcapture, but see nothing unusual in etherreal. Maybe someone can help analyze the packet?
Don't believe this would be virus/trojan...because it is only banging against one server. drop down to a command prompt on the WS and issue the netstat -a command and look at what ports/protos are open, and look for the port that is using ICMP. This should get you where you want to go? Let me know. Thanks.
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...