Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 10933] New: "Decode as" don't work well for modbus

[bugzilla-daemon@xxxxxxxxxxxxx]

Bug ID	10933
Summary	"Decode as" don't work well for modbus
Product	Wireshark
Version	1.12.3
Hardware	x86-64
OS	Windows 7
Status	UNCONFIRMED
Severity	Major
Priority	Low
Component	Common utilities (libwsutil)
Assignee	bugzilla-admin@wireshark.org
Reporter	helllkz@126.com

Created attachment 13430 [details]
can't be resolved

Build Information:
Version 1.12.3 (v1.12.3-0-gbb3e9a0 from master-1.12)

Copyright 1998-2015 Gerald Combs <gerald@wireshark.org> 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 (64-bit) with GTK+ 2.24.23, with Cairo 1.10.2, with Pango 1.34.0, with
GLib 2.38.0, with WinPcap (4_1_3), with libz 1.2.5, with SMI 0.4.8, with c-ares
1.9.1, with Lua 5.2, without Python, with GnuTLS 3.2.15, with Gcrypt 1.6.2,
without Kerberos, with GeoIP, with PortAudio V19-devel (built Jan  7 2015),
with
AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version
4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version 1.0 branch
1_0_rel0b (20091008), GnuTLS 3.2.15, Gcrypt 1.6.2, without AirPcap.
         Intel(R) Pentium(R) CPU G630 @ 2.70GHz, with 1877MB of physical
memory.


Built using Microsoft Visual C++ 10.0 build 40219

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

Check the man page and http://www.wireshark.org for more information.
--
Since I don't use the Modbus standard port 502, firstly, I capture the data,
then decode the data as "Modbus TCP", but it can't be classified or resolved. 
Refer to picture M1

I have to change the standard port to my real port, then it's OK.
Refer to picture M2

---

      You are receiving this mail because:

• You are watching all bug changes.