You don't provide much information about why you need this.
Port numbers are assigned by IANA, you cannot just grab a "free" one.
Look at the IANA register at:
http://www.isi.edu/in-notes/iana/assignments/port-numbers
Carl-Uno
> -----Original Message-----
> From: jehad [mailto:jehad at emirates.net.ae]
> Sent: Saturday, August 28, 1999 2:59 PM
> To: ipp at pwg.org> Subject: IPP> proxy & port
>>> I need your help to find a free proxy address and port.
>> Thanks
>