>We are looking at a trival method of dividing up the amanda
>disks - group 1) local to server, group 2) remote clients.

That will work very easily.  No special (source code) work required.

>Since one amanda will never actually touch the ethernet interface
>is there another method or work-around we should know about ?

Nope.  Amanda does not do anything special for the "local" client.
It still connects to inetd, etc.  So you have to set up the server just
like any other client (in addition to the server setup).

Most OS's detect connections to the local host and shortstop the traffic
to the loopback interface for you.

>I've never had to compile with alternate ports before, assuming
>its ./configure --with-port= or some equiv, if there a howto
>on exactly what switches and other considerations ?

You won't need alternate ports.  You can do what you need to do with
two Amanda configurations on the server.  One has a disklist, etc, that
refer to just the server.  The other has all the other clients.  Since the
configurations are in separate directories, there won't be any crosstalk.

>How do I choose ports without risking collision with anything else ?

As above, you don't need to because you can just use two configurations.

But for anyone else reading this that *does* want to use alternate ports,
I just picked related numbers and had my local network guru register them.
That's no guarantee some annoying program won't grab one of them at
just the wrong time, but there's no guarantee that won't happen with
the normal Amanda ports (or any other port, for that matter).

Here are my amanda /etc/services entries:

  amanda          10080/tcp                       # CC - Amanda backup system
  amanda-alt1     11080/tcp                       # CC - Amanda backup system
  amanda-alt2     12080/tcp                       # CC - Amanda backup system
  amanda          10080/udp                       # CC - Amanda backup system
  amanda-alt1     11080/udp                       # CC - Amanda backup system
  amanda-alt2     12080/udp                       # CC - Amanda backup system

Also, the "alternate port" patch I was talking about allows you to pick
the port in the amanda.conf file -- no rebuild is needed (except once
to apply the patch).

>                                               Brian

John R. Jackson, Technical Software Specialist, jrj AT purdue DOT edu