[comp.protocols.tcp-ip] Question about TCP/IP on VMS

dd@sei.cmu.edu (Dennis Doubleday) (08/03/88)

I currently have an application running on Ultrix which uses TCP/IP.
Each machine in the network has a server running on it.  The server is
opened in passive mode and listens at a known port for traffic.  Under
Ultrix this "known port" is defined by adding an entry for my server
into the file /etc/services.  How is this done under VMS?  How are the
well-known ports defined?  Or does this depend on the TCP/IP software
you have?

adelman@WARBUCKS.AI.SRI.COM (Kenneth Adelman) (08/05/88)

> I currently have an application running on Ultrix which uses TCP/IP.
> Each machine in the network has a server running on it.  The server is
> opened in passive mode and listens at a known port for traffic.  Under
> Ultrix this "known port" is defined by adding an entry for my server
> into the file /etc/services.	How is this done under VMS?  How are the
> well-known ports defined?  Or does this depend on the TCP/IP software
> you have?

    Depends on the TCP/IP software you have. On MultiNet you add an
entry to a text file which gets compiled into a binary database and
loaded into a global section for fast access. On WINS/TCP I believe
that you add an entry to the etc:[000000]services file just like under
Unix.  Well known ports don't HAVE to be defined in these files, it
just makes it convenient because your code can reference the port by
name instead of number.

						Kenneth Adelman
						TGV