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Date:      Fri, 07 Oct 2016 14:49:07 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-standards@FreeBSD.org
Subject:   [Bug 213276] port 502 is officially mbap (Modbus Application Protocol), /etc/services claims outdated asa-appl-proto
Message-ID:  <bug-213276-15@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213276

            Bug ID: 213276
           Summary: port 502 is officially mbap (Modbus Application
                    Protocol), /etc/services claims outdated
                    asa-appl-proto
           Product: Base System
           Version: 11.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: standards
          Assignee: freebsd-standards@FreeBSD.org
          Reporter: Mark.Martinec@ijs.si

Created attachment 175500
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D175500&action=
=3Dedit
patch for /etc/services: ports 502 and 802

The file /etc/services states that port 502 belongs to an asa-appl-proto
service, but this is not true. The port is officially (IANA) assigned
to "Modbus Application Protocol" since 2014-06-10. Apparently it was
previously assigned to Cisco, but no longer is. Also a related port 802
entry is missing in /etc/services.

http://www.iana.org/assignments/service-names-port-numbers/service-names-po=
rt-numbers.xhtml?search=3Dmodbus

mbap    502 tcp Modbus Application Protocol [modbus.org] [Dennis_Dube]
2014-06-10
mbap    502 udp Modbus Application Protocol [modbus.org] [Dennis_Dube]
2014-06-10
mbap-s  802 tcp Modbus Application Protocol Secure [modbus.org] [Dennis_Dub=
e]
mbap-s  802 udp Modbus Application Protocol Secure [modbus.org] [Dennis_Dub=
e]

See also: http://seclists.org/nmap-dev/2015/q3/373

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