I would recommend opening a TAC case to have this investigated further. The ASA has limited support for certain DCERPC calls, so its possible that Honeywell's implementation uses UUIDs that are not supported by the inspection engine. If you have opened all ports through the ACL, you should disable the DCERPC inspection to prevent any interoperability issues.
If you leave the inspection enabled and decide to open a TAC case, you'll need to get the following:
1. Captures on the inside and outside interfaces of the ASA
2. Syslogs from the ASA during a failed connection
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...