Nov 20, 1996

Tcplist makes a list of tcp connections to and from the local machine,
displaying the user name associated with the local end, and making use of 
Ident services if available to determine the "user" at the other end.

Tcplist attempts to be efficient about Ident queries, using the following
techniques:
- all connections to a particular host are grouped together.
- connections to the Ident service on different hosts are made simultaneously,
  where available file descriptors allow, using non-blocking I/O.
- if the Ident service on a host is not available, no further requests will
  be made to that host.
- if the Ident service supports multiple queries per service connection
  (This is not in RFC931/1413, but it is supported by some Ident daemons), 
  tcplist will take advantage of this. 

Tcplist currently runs on Suns running SunOS 4.1.x, on SGI machines
running IRIX 4.x, and on other machines using LSOF version 3.x.

The most recent version of tcplist can normally be found on 
ftp.cdf.toronto.edu, in /pub/tcplist.

Author: John DiMarco, University of Toronto, CSLab
        jdd@cs.toronto.edu