Listen
Listen hostname:port
Server config
Listen tells Apache to pay attention to more than
one IP address or port. By default, it responds to requests on all IP
addresses, but only to the port specified by the
Port directive. It therefore allows you to
restrict the set of IP addresses listened to and increase the set of
ports.
Listen is the preferred directive;
BindAddress is obsolete, since it has to be
combined with the Port directive if any port other
than 80 is wanted. Also, more than one Listen can
be used, but only a single BindAddress.
There are some housekeeping directives to go with these three: