Wireshark-bugs: [Wireshark-bugs] [Bug 2917] New: Modbus Function 43 Encapsulated Interface Trans
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2917

           Summary: Modbus Function 43 Encapsulated Interface Transport
                    decoding
           Product: Wireshark
           Version: 1.0.3
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: [email protected]
        ReportedBy: [email protected]


Created an attachment (id=2281)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=2281)
Capture of function 43, messages 7 and 9

Build Information:
Version 1.0.3 (SVN Rev 26134)

Copyright 1998-2008 Gerald Combs <[email protected]> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GTK+ 2.12.8, with GLib 2.14.6, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with ADNS, with Lua 5.1, with GnuTLS 2.3.8, with Gcrypt 1.4.1, with MIT
Kerberos, with PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, without
AirPcap.

Built using Microsoft Visual C++ 6.0 build 8804

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
Modbus Application Protocol Specification V1.1b includes a function 43 (0x2b)
Encapsulated Interface Transport.  When WireShark encounters this message it is
captured as a TCP message, not a Modbus message.

The function is described beginning on page 42 of the specification named
above(freely available from modbus.org).


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