Take the 2-minute tour ×  I have my own server application in C,
I bind my server on localhost address and let it listen in first
case on port 10000 and in second case on port 20000. When I run
command I lsof | grep IP in last column is: in the first case:
localhost:webmin (LISTEN) and, in the second case:
localhost:20000 (LISTEN)  So instead of port 10000 there is
webmin. What does it mean? I found this. It says that Webmin is
a web-based interface for system administration for Unix but
that isn't enough clear explanation. So what webmin exactly
mean?  share|improve this question  1 Answer 1  up vote 3 down
vote accepted  Some port numbers are often/traditionally/by
default used by certain services. Port 80 is for HTTP server,
port 22 is SSH, port 143 is IMAP etc. Port 10000 is
traditionally used by webmin to display its management
interface, while port 20000 is for webmin's web mail.  lsof just
tries to be friendly by displaying human-readable names of
services which usually use those port numbers instead o