Subj : VModem ports
To   : Tommi Koivula
From : Peter Knapper
Date : Mon Nov 07 2005 06:45 pm

Hi Tommi,

 TK> Saturday November 05 2005 10:37, Bob Jones wrote to Sean Dennis:

 SD>> Is there any way to have VMODEM listen on a different
 SD>> port besides 23 and 3141 (or whatever port it also
 SD>> listens to)?

 TK> ======================================================================
 TK> The Virtual Modem Protocol (VMP) that is implemented by Vmodem uses
 TK> TCP/IP Sockets.  The default port number used by Vmodem is 3141 (the
 TK> first 4 digits of pi, un-rounded).  However, this default port number
 TK> can be overridden by using the SERVICES file in the TCP/IP ETC
 TK> directory.  If the user defines a "Well-Known Port" called "vmodem"
 TK> (lower case) in the SERVICES file, then that port will be used instead
 TK> of 3141.  The port number 3141 has been assigned to the Virtual Modem
 TK> Protocol (VMP) by the Internet Assigned Numbers Authority (IANA).  The
 TK> ======================================================================

 TK> Funny way to set the port. :)

Actually, the Services file is the "normal" way to control the port for any IP 
specific protocol.

Cheers.............pk.


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