I'm seeing a lot of "DENIED LAND ATTACK" messages coming from a PIX 515 v.6.3 on my CS-MARS console. I'm not a PIX expert, but couldn't spot anything.
It must have something to do with the NAT (Internet searches have pointed my to such things as DNS Doctoring and Hairpinning) implemented. I've attached both a partial config and a sample of the messages taken from the CSMARS.
The IP 188.8.131.52 is the IP used to hide the internal network addresses (184.108.40.206/8) on the Internet.
Will we be able to see the MAC address of the host with the cap command ? I have similar problem here.. if cap command can show me the source mac, i think i dont need to run a sniffer , spanning the inside interface of the FW.. The attack seems to be from sniffed IP 0.1.0.5 !
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...