NETBIOS Name Service packets (UDP port 137) are arriving at your outside interface, coming from 22.214.171.124 and 126.96.36.199, and destined for 188.8.131.52. This kind of traffic is denied by the Adaptive Security Algorithm (ASA) if no access-list is in place explicitly allowing this kind of 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...