The complete bit in my
# $Id: services,v 1.53 2011/06/13 15:00:06 ovasik Exp $
# Network services, Internet style
# IANA services version: last updated 2011-06-10
# Port 1236 is registered as `bvcontrol', but is also used by the
# Gracilis Packeten remote config server. The official name is listed as
# the primary name, with the unregistered name as an alias.
bvcontrol 1236/tcp rmtcfg # Daniel J. Walsh, Gracilis Packeten remote config server
bvcontrol 1236/udp # Daniel J. Walsh
According to this:
bv-Control for UNIX v9.0 is a security and systems management tool for
system administrators and security auditors. The tool’s implementation
adopts the powerful querying and reporting features of RMS Console and
Information Server. The RMS Console along with bv-Control for UNIX is
a powerful tool designed to help you manage your server environment.
For more information about the RMS Console and the Information Server
see the RMS Console and Information Server Getting Started Guide.
Since this is a commercial software product, you would probably know if you were using it. As for the "Gracilis Packeten remote config server", here's a clue for you:
I believe "packeten" is German for packets, "gracilis" latin for slender and would guess the Gracilis Packeten is an obscure probably obsolete piece of hardware.
In other words, if you want to use that port for something, you are fine doing so. It may (or may not) occasionally get scanned by something expecting "bvcontrol" but that should not matter.