Re: [K12OSN] Port 963

[Eric Harrison <eharrison mail mesd k12 or us>]

On 29 Nov 2003, Daniel Loomis wrote:

>First, let me say thanks to everyone for all the suggestions.
>
>Here is what I discovered over the last few days:
>
>nmap revealed port 963 open with the service as unknown.  Running 
>fuser -v 963/tcp from the command line if found:
>
>1.  port 963 was being used by rpc.quotad
>    rpc.quotad is part of NFS and comes with the nfs-utils.rpm.
>
>2.  /etc/services does not list anything for port 963 tcp or udp
>
>3.  When I rebooted the server and logged in from a client, nmap
>    then showed port 736 unknown.  
>
>4.  Typing fuser -v 736/tcp reported rpc.quotad now using port 736
>
>Conclusion:
>
>It appears that rpc.quotad will use any port or it selects ports at
>random. Perhaps that is a designed-in feature?

It is indeed a "feature".

Many of the traditional rpc (remote proceedure call) daemons pick a
random port and then register with portmapper, which can be found on
port 111.

If you run "rpcinfo -p", it will return which rpc app can be found 
on which port.

-Eric